1, positive integer coefficient quadratic equation ax2+bx+c=0 has a rational root, then () in a, b and c.

A. there must be at least one even number B. There is at least one prime number

C. there must be at least one odd d. There is at least one composite number.

2. The integer solution of the equation √x +√y =√ 1998 has () groups.

A. Numerous B.4 C.2 D.0.

(x, y) is called number pair, where x and y are arbitrary real numbers. The addition and multiplication operations of number pairs are defined as follows:

(x 1，y 1)+(x2，y2)=(x 1+x2，y 1+y2)

(x 1，y 1)？ (x2, y2)=(x 1x2-y 1y2, x 1y2+y 1x2), then () is invalid.

A. Multiplicative commutative law: (x 1, y 1)? (x2，y2)=(x2，y2)？ (x 1，y 1)

B. Multiplicative associative law: (x 1, y 1)? (x2，y2)？ (x3，y3)=(x 1，y 1)？ [(x2，y2)，(x3，y3)]

C. the distribution law of multiplication to addition: (x, y)? [(x 1，y 1)+(x2，y2)]=[ (x，y)？ (x 1，y 1)]+[ (x，y)？ (x2，y2)]

The distribution law of D addition to multiplication: (x, y)+[(x 1, y 1)? (x2，y2)]=[ (x，y)+(x 1，y 1)]？ [ (x，y)+(x2，y2)]

Step 4 set 0

5. Let the real numbers x, y, z apply to 9x3=8y3=7z3, 9/x +8/y +7/z = 1, then

3√(9x)2+(8y)2+(7z)2 =().

6. Let the real numbers x, y and z satisfy x+y+z=4(√x-5+√y-4+√z-3), then x= (), y= () and z= ().

7. Given that three sides A, B and C of a triangle satisfy 9≥a≥8≥b≥4≥c≥3, the maximum area of the triangle is = ().

8. The integer part of x is represented by [x], that is, the largest integer not greater than x. All rational roots of the equation 9x2-8[x]= 1 are ().

9. Let the real numbers x and y satisfy x2-2x∣y∣+y2-6x-4∣y∣+27=0, then the value range of y is ().

10, all the different real roots of the equation (x3-3x2+x-2) (x3-x2-4x+7)+6x2-15x+18 = 0 are ().

Examination questions of second grade science competition

First, multiple choice questions

1.1995 On the morning of March 20th, several subway cars in Tokyo, Japan were attacked by sarin gas at the same time, resulting in more than 5,000 people being poisoned. The chemical name of sarin is "isopropyl methyl fluorophosphate", and it is known that each sarin molecule contains 4 carbon atoms, 10 hydrogen atoms, 2 oxygen atoms, 1 phosphorus atoms and 1 fluorine atoms. The mass fraction of phosphorus in sarin is about

a、25% B、22% C、34% D、29%

2. Latest scientific and technological report: Not long ago, scientists at the United Astronomical Center in Hawaii, USA, discovered new hydrogen particles. This kind of hydrogen particle consists of three hydrogen nuclei (only protons) and two electrons, which provides a new reference for explaining the evolution of the universe. For this kind of particle, the following statement is wrong.

A. it must contain three neutrons. It has one more hydrogen nucleus than ordinary hydrogen molecules.

C its composition can be expressed by H3+D, and it can be inferred that its chemical properties are different from that of hydrogen.

3. The European Southern Observatory in Chile announced that astronomers had observed the comet "Wu Bai" exposed to more and more intense sunlight, and the emitted gases included mixed gases such as water vapor, carbon monoxide, methanol (CH3O), formaldehyde (CH2O) and hydrocyanic acid (HCN). According to the report, it can be speculated.

A comet Wu Bai contains at least carbon, hydrogen, oxygen and nitrogen.

B. "Hundred Weapons" comet may have life.

C "Wu Bai" comet contains gas, liquid and solid.

There are simple substances and compounds in Comet Wu Bai.

4. The magnesium strip is sealed in a high temperature resistant container (with air inside) and heated. The following figure can correctly show the change of the total mass (m) of the substances in the container with time (t).

Mimi Mimi

A t B t C t D t

5. Experiments show that the correction fluid used by students contains a variety of volatile harmful substances, which are easy to cause chronic poisoning after inhalation, with symptoms of dizziness and headache, and severe convulsions and dyspnea. Dichloromethane is one of them, and the following statement about dichloromethane (CH2Cl2) is correct.

① It is a compound composed of three elements: carbon, hydrogen and chlorine.

② It is a mixture of chlorine and methane.

③ The atomic number ratio of carbon, hydrogen and chlorine in its molecule is 1: 2: 2.

It is a compound composed of many kinds of atoms.

A.①③ B.②④ C.②③ D.①④

After 6.24 grams of hydrogen-oxygen mixed gas fully reacts, 18 grams of water is measured, so the mass ratio of hydrogen and oxygen in the original mixed gas may be

a . 1:3 b . 2: 1 c . 1:2D: 1:8

7. The tour bus of Hangzhou West Lake is one of the means of transportation near the West Lake. It uses electric energy as the driving force, not a motor vehicle that uses gasoline or diesel fuel. This can reduce the emissions of sulfur dioxide, carbon monoxide and other pollutants. In order to detect the degree of air pollution caused by CO, substance X (containing two elements I and O) can be used. The reaction principle is: X+5CO==I2+5CO2. According to the types and quantities of elements before and after the reaction in this chemical equation, the chemical formula of X can be inferred.

A, Io B, I2O C, I2O3 D, I2O5

8. 1999 The Nobel Prize in Chemistry was awarded to the scientist who initiated the new field of "femtosecond (10- 15s) chemistry", which made it possible to observe the movement of atoms in molecules by laser spectroscopy. What do you think this technology can't observe is .................................................... ()

A. Internal structure of nucleus B. Movement of atoms in chemical reactions

C. Formation of product molecules in chemical reactions D. Decomposition of reactant molecules in chemical reactions

9. In the mixture composed of NaHS, MgSO4 and NaHSO3, if the mass fraction of S element w(S)=a%, then the mass fraction of O element w(O) is ().

A.1.75a% B.1-1.75a% C.1.25a% D. cannot be calculated.

10. Divide the unsaturated solution containing 400g of potassium nitrate into two equal parts. At the same temperature, one part evaporates 60g water to precipitate 3g crystals, and the other part evaporates 80g water to precipitate 8g crystals. Then the solubility of potassium nitrate at this temperature is ()

a，5g b， 10g c，20g d，20g。

1 1. It is our middle school students' duty to publicize science and expose pseudoscience. Do you think the following rumors have scientific basis is ()

A vendor sells a solvent in the street that claims to dissolve any substance.

B, there is a mysterious "Death Valley" somewhere. Rabbits and other lower animals often suffocate when they enter the bottom.

C, some people say that he invented a catalyst that can turn water into gasoline by adding a small amount.

D. Sodium benzoate is a preservative. In order to prevent food from spoilage, a large amount of sodium benzoate can be added to food.

Xiaoying, 12.4 years old, has a little ear pain and needs to take Bure paracetamol syrup or drops (syrup and drops have the same effect), but only paracetamol drops are available at home. For a 4-year-old child, the safe dose of syrup is 6 ml (see the picture below). How many milliliters of droplets are equivalent to taking 6 milliliters of syrup? ( )

a， 12ml b，9ml c，6ml d，3ml。

14. Wolves used to be a common animal in the western United States. Later, it was killed in large numbers for the safety of farms, and it was basically extinct in the early 20 th century. 1996, the United States reintroduced wolves from Europe and released them in the wilderness. This is mainly aimed at ()

A, develop sightseeing to attract tourists; b, make the local ecosystem healthier.

C, preying on those animals that are harmful to agricultural production D, preventing grassland rodents.

15. When frogs hibernate, the respiratory organs are mainly ().

A, vein B, capillary C, gill D, skin

16. There are several sayings about rainbows after rain: ① Because the earth is spherical, rainbows are round; 2 observe the rainbow to the sun; ③ The essence of rainbow phenomenon is the dispersion of light; (4) Rainbow often appears when the rain clears, because the air visibility is high when the rain clears. The correct statement is

A.③ B.①③ C.①③④ D.①②③

17. Someone took a picture of a flat mirror with a camera and tried to capture the characters in the mirror. Therefore,

A.he won't succeed, because the flat mirror is a virtual image.

B.he can shoot people with a flat mirror, which is no different from shooting people directly.

C. he can shoot people with a flat mirror, but the left and right sides of the image on the negative are contrary to reality.

D. he can shoot people in front of a flat mirror, but the up, down, left and right images on the negative are contrary to reality.

18 solubility. Both a and b increase with the increase of temperature. At 10℃, 10 g water can dissolve 1? 5 g of a substance; At 30℃, 23 g of saturated solution of substance B was evaporated to dryness, and 4 g of substance B was obtained. Then, at 20℃, the relationship between the solubility of A and B is

Answer? A=B B？ Can't judge

19. In a room with a temperature of 20℃, measure the temperature of boiling water with a mercury thermometer. When the mercury level passes a certain scale between "20" and "100", the pointer of the thermometer indicates ().

A, the temperature of air in the room b, the temperature of boiling water

C, the temperature d of mercury in the thermometer means nothing.

20. After sunset 1 hour, you can see the artificial earth satellite orbiting the earth above the equator of the earth directly above point A.. Then the following figure can reflect this phenomenon (the semicircle in the figure represents the earth, and the arrow in the circle represents the rotation direction of the earth) ().

2 1. When the electric fan is hung on the indoor ceiling, the pulling force of the suspender on the ceiling is F 1, and after the electric fan rotates horizontally at a uniform speed, the pulling force of the suspender on the ceiling is F2, then ().

A, f 1 = f2b, f 1 > f2c, f 1 < f2d, the conditions are insufficient, so it is impossible to compare.

22. weigh a piece of radish first, and then put it in concentrated NaCl solution for several hours. In this process, radish pieces are weighed every 1 hour 1 time. The graph that best represents the change of radish quality with time in the following figure is

23. Put two identical cuboid blocks into two liquids with different densities, and both blocks float. The volume of block A is 1/5, and the volume of block B is 1/4. If the part exposed to the liquid surface is removed, the volume of the part exposed to the liquid surface again is ()

A.a is bigger and B is bigger.

C. the same size D. the conditions are insufficient to judge.

24. The common method for preparing alloys is to heat two or more metals (metal and nonmetal) to a certain temperature.

Make it completely melt, and then cool it into alloy. Judging from the data in the following table (other conditions are met), the following alloys are not suitable for the above method.

Metal sodium magnesium aluminum copper iron

Melting point/℃

Boiling point/℃

A. Fe-Cu alloy Mg-Fe alloy Na-Al alloy Fe-Al alloy

25. In two places on the north-south route, in windless weather, it takes t for a plane flying at speed V to make a round trip. It's the south wind now. If the speed of the plane relative to the wind always keeps V, the time required for a round trip ().

A. less than t B and greater than t C means that t D cannot be determined.

26. Fill two identical beakers A and B with two liquids with different densities. The mass of two liquids in a cup is half, and the volume of two liquids in b cup is half. The densities of the two liquids are ρ 1 and ρ2, ρ 1 < ρ 2 respectively. Assuming that there is no mixing phenomenon between the two liquids, if the liquid masses in Cup A and Cup B are M A and M B respectively, then ()

A, M A < M B, M A =m B C, M A > M B D, uncertain.

27. As shown below, the beaker is filled with hot water at 90℃, and a block A is just suspended in the water cup. When the water temperature drops to 10℃, Block A will () (a) sink (b) float (c) float (d) and vibrate up and down.

As shown in the above picture, on a cloudless sunny day in Wan Li, a classmate erected a straight pole on the playground. On the ground, OA is the projection of this pole in the sun. After a while, the position of the shadow moved to OB, OA=OB, as shown in Figure 3. Then the direction that AB refers to is ()

(a), East (b), West (c), South (d), North

29. At a certain temperature, add a small amount of quicklime to a certain quality of saturated limewater. When the solution returns to its original temperature, the following statement is correct:

A. the solubility of solute becomes smaller. B. the number of OH+ in unit volume remains unchanged.

C, the mass fraction of solute increases, D, the total amount of Ca2+ in the solution remains unchanged.

30. Faraday, a British scientist, once did an interesting "mother-child flame" experiment for children, as shown in the figure. According to this experiment, the following analysis is correct:

A the substance burned in the sub-flame is liquid paraffin.

B. this phenomenon shows that the melting point of the main substances in candles is low.

In order to make the experiment successful, the catheter should not be too long.

One end of the catheter should be inserted into the center of the mother flame, because there is enough oxygen there.

Second, short answer questions

3 1, the molecular formula of the oxide of metal element R is M 1, and the molecular formula of its chloride is M2, so the valence of this metal element R (R has no variable valence) is

32. The rocket used to launch a communication satellite uses hydrazine N2H4 as fuel and N2O4 as oxidant, which generates nitrogen and water after combustion. Please write the chemical equilibrium equation.

33. It is known that Fe element usually presents valence of +2 or +3 in compounds, so Fe3O4 can be written as FeO in oxide form. Fe2O3 or Fe(FeO2)2 in salt form belongs to ferrate. The valence of Pb in the compound is +2 or +4, so Pb3O4 can also be written as _ _ _ _ _ or _ _ _ _ _ _ _.

34. The speed at which we sit in the classroom rotates with the earth is about m/s (only 1 significant number is needed, which is about 6,400 kilometers according to the location of radius of the earth, and the north latitude is 30 degrees). Why don't we feel high-speed movement? .

35. After measurement, the mass of the pressure valve of the 24 cm pressure cooker is 0.08 kg, and the cross-sectional area of the exhaust hole is 6.3 mm2. If it is used to boil water for disinfection, according to the relationship between boiling point and pressure in the table below, the water in this pressure cooker

The highest temperature that can be reached is about. (At that time, the atmospheric pressure was 1.02× 105 Pa)

T/℃

p/kPa 70 10 1 12 1 1 143 154 163 175 187 65438。

36. As the picture shows, there are two radishes of the same size, and a hole of the same size is dug in them.

And a glass tube with the same diameter as the hole is inserted into each hole. Inject 3 ml into the nail glass.

Clear water, inject 3 ml of concentrated brine into glass tube B, and ask:

(1) After a period of time, the liquid level in the glass tube was observed to rise.

(2) The rise or fall of the liquid level in the glass tube mainly depends on.

37. When cleaning oily articles, sodium carbonate solution has a better decontamination effect than water. Sodium carbonate solution was alkaline by pH test paper. Please answer:

(1) The specific operation method for detecting the pH value of solution with pH test paper is _ _ _ _ _ _ _ _ _; (2) It is found that the alkalinity of sodium carbonate solution is related to the concentration and temperature of the solution. The following four experimental steps were used to study the relationship between the alkalinity of sodium carbonate solution and the change of solution temperature and concentration. Please briefly write out the experimental steps of the second and third steps (there is no need to write out the instruments involved in the experiment). Step 1: Prepare sodium carbonate solutions with solute mass fractions of 5%, 15% and 20% respectively; Step 2: _ _ _ _ _ _ _ _ _ _ Step 3: _ _ _ _ _ _ _ _ _ _ _ _ _ Step 3: _

38. With the rapid development of China's space science and technology, exploring Mars has become a shadowless goal of China's space science and technology development. However, if we want to send humans to Mars, there are still many space technology problems to be solved. For example, how to provide the oxygen that astronauts need to breathe during the round trip and how to eliminate the carbon dioxide produced during the breathing process are all issues worthy of study. It is known that an adult breathes about 6570000 liters of air every year, but it takes two years for the current spacecraft to go back and forth to Mars. If the spacecraft carries all the oxygen it needs when launching, the amount will be large, which greatly increases the cost and difficulty of launching.

(1) If there are three astronauts on the spacecraft, please calculate that a round trip to Mars theoretically requires _ _ _ _ _ _ _ _ _ _ _ kilograms of oxygen. (The density of oxygen is 1.43g/L, and the answer is an integer. )

(2) Two oxygen supply schemes for spacecraft are proposed:

(1) Electrolyzes water by the current generated by solar cells.

② Oxygen is generated by the following chemical reaction: 2na2co3+2co2 = = = 2na2co3+O2. Please evaluate the main advantages and disadvantages of these two schemes (write one point each) from the point of view of reducing the launch weight of spacecraft and eliminating the carbon dioxide produced during breathing. Scheme ①: Advantages _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Disadvantages _ _ _ _ _ _ _ _ _ _ _ _; Scheme ②: Advantages _ _ _ _

Disadvantages _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

(3) Some scientists have proposed to study the technology of artificial hibernation of astronauts or to speed up the spacecraft and shorten the time of leaving the cabin to reduce the oxygen carrying capacity. Do you have a better plan, Please give an example: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

39. As shown in figure 17- 1, the left figure shows the change of lung pressure when people breathe quietly, and the right figure shows the change of chest when they breathe quietly. At point D on the left, the pressure in the lung is higher than atmospheric pressure (choose "high", "low" or "equal"). When the chest changes are in the right B state, the pressure in the lungs is

In which part is this change reflected (as shown by the letters on the left)?

40. As shown in the figure, during the germination of soybean seeds into seedlings, according to their dry weight

(quality of seeds after dehydration) and fresh weight (actual quality of seeds).

Do not draw two curves. Then the curve shows the change of fresh weight.

The start time of photosynthesis of this seedling is,

State your reasons.

4 1. It is reported that the construction of the Three Gorges Hydropower Station is equivalent to the construction of a super-large coal mine with an annual output of 50 million tons of raw coal or a super-large oil field with an annual output of 25 million tons of oil, which is equivalent to the construction of 10 large-scale thermal power plant with an installed capacity of 2 million kilowatts, and the power generation benefits are very considerable. The completion of the Three Gorges Power Station is conducive to reducing which of the following pollution.

① Acid rain ② Red tide ③ Dust pollution ④ White pollution ⑤ Photochemical smog ⑤ Nitrogen oxide emission.

42. When studying the thermal decomposition reaction of ferrous sulfate, some students made two assumptions: (1) Assuming that it is decomposed by KClO3, the chemical equation is; (2) Assuming decomposition by CaCO3, the chemical equation is. In fact, because FeO is easily oxidized, the decomposition products of FeSO4 are Fe2O3, SO2 and SO3, and the decomposition temperature is about 500℃, so the chemical equation is

(Note 2kClO3 = 2kCl+3o2 = CaCO3 = Cao+CO2 =)

Drosophila is a small insect that likes to eat rotten fruits and fermented products, and can often be seen near fruit stalls. In order to explore whether this feeding tendency of Drosophila melanogaster is innate or acquired, the students carried out related experiments: (1) separating Drosophila eggs to obtain Drosophila larvae; (2) squeezing bananas and vegetables into juice respectively, and dripping the juice at both ends of the filter paper; (3) Take 20 Drosophila larvae, put them on filter paper, and observe the crawling direction of the larvae at the same distance from the two kinds of juices. The results are as follows:

Observation time is 3 minutes, 5 minutes and 8 minutes 10 minute.

Number of Drosophila larvae crawling towards banana juice (one) L5L7L82O

The number of Drosophila larvae crawling to Chinese cabbage juice (one) 5320

Try to answer related questions:

(l) The purpose of separating Drosophila eggs is not to use Drosophila larvae directly in the experiment; (2) After analyzing the above experiments, what do you think needs to be improved?

Junior two Chinese competition questions

Guess idioms according to ancient poems (10)

(1) The desert is lonely and straight, and the long river sets the yen ()

[2] The emperor said that Baiyun, a thousand miles away in Jiangling, returned in one day ()

(3) We meet. We understand. What is the relationship between acquaintances? ()

(4) Who knows that every grain of Chinese food is hard ()

5] The sea is wide and the fish jumps, and the sky is high and birds fly ()

[6] But going up a flight of stairs broadens your horizons by 300 miles.

When will the bright moon shine on me? ( )

It's better to be in thousands of feet than in Wang Lun. ( )

There is no doubt that there is no road and there is another village. ( )

Silkworms in spring will weave until they die, and candles will drain the wick every night. ( )

Second, according to the meaning, write idioms (10)

(3) can't restrain his excitement. ( )

Everything is arranged in a very orderly way. ( )

5] professional life is not fixed, running around in the distance. ( )

[6] At the critical moment, I suddenly thought of a way. ( )

If you don't say right or wrong once, it doesn't mean yes or no ... ()

Existence refers to people who do things in the wrong direction, and no matter how good the conditions are, they can't achieve their goals. ( )

⑼ Not afraid of hard work and complaining, describe the idea of serving the public wholeheartedly. ( )

⑽ refers to being able to adapt to various environments and be satisfied in any environment. ( )

Guess idioms with numbers: (5 points)

⑴ 1+2+3( ) ⑵ 333 555( )

⑶ 3.5( ) ⑷ 5 10( )

5] 9 inches+1 inch = 1 foot ()

6. Fill in ancient poems as required. (Per grid 1 min, *** 15 min)

1. A shallow strait separated the mainland from Taiwan Province Province for 60 years. In April 2006, Mr. Lien Chan, Chairman of the Kuomintang, led a delegation to visit the mainland. When meeting Lien Chan, General Secretary Hu Jintao quoted Confucius' famous words to express his joy.

, 。

4. People say that "those who approach the ink are black", but "those who approach the ink are not necessarily black", as Zhou Dunyi said in On Ailian: ",_ _ _ _ _ _ _ _ _".

6, Ma Zhiyuan in the sand? Qiu Si wrote: "When the sun sets, heartbroken people are at the end of the world. And Cui Hao in The Yellow Crane Tower also has two poems similar to this artistic conception, namely ",".

Seven. Collision with famous works (1 point per grid, ***30 points)

3. Peach Blossom Garden is selected from Tao Yuanming's anthology. Tao Yuanming, also known as Qian, is famous for his distinctive personality and figures. Chai Sang in Xunyang is a famous poet. China is the best.

9. Write characters or literary works as required.

(3) "Flowers fade all over the sky. Who has pity when the fragrance dies? " ? ..... Spring goes and spring comes, flowers fall and people die! "This poem was written by the character () in A Dream of Red Mansions.

(1) according to the characters in the four classical novels.

The first part: resourceful, Zhuge Liang skillfully borrowed arrows.

Part II: (3) The couplets of places of interest often contain the essence of China traditional culture, and some of them summarize the life of ancient literati. According to the following couplets and the ancient poems learned, write the corresponding places of interest or names in brackets.

1, I am a dreamer, and the Dengsi Building is also full of weather. ( )

2. By Baotu Spring near Daming Lake, the former residence is deep in Qingyang.

Shuyu concentrated on epigraphy, and his literary talent has the legacy of his predecessor. ( )

3, a generation of monarchies injured silkworm rooms, and a thousand years of history went back to Longmen. ( )

4. The most cautious works are nothing more than the history of China's novels; The last words are still painful. Don't be an empty writer ()

5, look around, see how high the sky is, just look at the little people in the mountains ()

8, the world is scarred, and the sage in the poem. The people are in poverty, and the bottom of the pen is turbulent. ( )

9, the bright moon comes and goes, no ancient and modern empty pool ()

10, it's a long way to go, Xiu Yuan, sit here and watch the clouds relax the universe.

Looking at the scenic spots on the high platform, I am eager to plough the mountains and fish for water that day and overlook the ministers ()

English competition questions in grade two of junior high school

1. There is no one in the room, _ _ _ _ _ _ _ _ _ _?

A. There is B. There is no C. Is it D.?

Have you ever been to Beijing?

-No, I didn't.

A. do, be B. Yes, by C. Yes, by D. Do, be

3.- How about buying her a CD?

-No, that's not _ _ _ _ _ _ _ _.

A. enough, enough.

4. Do you often help Wei Fang review her lessons?

A. In B.At C. With D.Out.

Mom is very busy on Sunday. She is the first _ _ _ _ _ _ in my family.

A. the busiest

6. _ _ _ _ _ _ _ _ _ Is it good or bad for your health in bed?

Reading.

7. I hope tomorrow.

A. You'd better B. You'd better C. You'd better D. You'd better.

8. Would you mind cleaning your room?

A. cleaning B. cleaning C. cleaning D.

9.-_ _ _ _ Have you been collecting stamps?

Four years.

A. How often B. How often C. How much D. How much

10. If you don't come with me, _ _ _ _ _ _?

A.you will regret it.

1 1. She said she was having lunch.

A. yes, B. yes, C. yes, D.

12. When the girl was with a boy, the teacher came into the classroom.

A. talking.

13. There will be _ _ _ _ _ _ _ _ cars than before.

A. more B. more C. a lot D. a little

14.- Are there any tall buildings here?

-___________________________.

A. Yes, there won't be B. Yes, there will be C. No, there won't be D. No, there won't be.

15. Wang Ding bought a new bike this morning.

A. buy B. buy C. buy D.

4. Rewrite sentences as needed

1. I went to the park last Sunday.

I _ _ _ _ _ _ _ went to the park last Sunday.

I have lived here for ten years.

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Have you lived here?

He did his homework last night. (changed to general question)

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ His homework last night?

We held a big family dinner yesterday. (Ask questions about the underlined part)

_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ You _ _ _ _ _ _ _ A sumptuous family dinner?

She often goes to school on foot. (changed to the general past tense)

She often _ _ _ _ _ _ _ _ _ walked last year.

.