1 coefficient 6 -3 1 1 4/9 -3/5

Multiply by 1 5 3 3 2 2

2、 4 4

3、4a+6b

4、 1/3

5、 1 1/9

6、 1000

7、x⒉+2xy+y⒉

x2+2xy+y2

8 、-3x2+8+4x

9、3

10、ab+ac+bc

1 1 、-2x2+5xy-2y2

12、2

13、-3

14、2a+3b

9b2+6ab-4a2

15 、( n-2)n+ 1=(n- 1)2

16、 15

(I won't call the number of times, just 1, 2, 3 ...)

choose

D C D B B D A C B A D

Multiple choice

1, B 2, C 3, C 4, B 5, B 6, C 7, a 18- 19.

2 1-22

1B

2D

3C

4C

5A

6C

7A

8B

9A

10D

24-25

1C

2A

3C

4C

5D

6C

7D

8D

4 1-42

1A

2C

3C

4C

5D

6B

7D

8C

9A

10D

Under 42 -43 years old

1C

2B

3B

4A

5D

forty-four

Well, choose B for question 6.

The ninth question is C.

biology

Aunt Li is a very clean person. For food safety, she always eats some fresh fruits and vegetables instead of meat and eggs. Some time ago, she found that the iron pot for cooking at home was rusty, so she changed it to aluminum pot for cooking. Recently, however, she looks pale and dizzy. The doctor gave her a routine blood examination, and the results showed that red blood cells were 3× 10/2 power /L, white blood cells 12× 10 power /L, and hemoglobin was 90g/L. ..

Note: The normal value of red blood cells in adult women is 3.5×10 —— 12 and 5.0× 10 /L, and the normal value of hemoglobin is110 ——150g.

(1) According to the number of white blood cells, it can be judged that she has _ _ _ _ _ _ _ _ _, which can be treated in this way.

(2) According to the number of red blood cells, it can be judged that she suffers from _ _ _ _ _ disease and should eat more foods containing _ _ _ _ _.

(3) According to the hemoglobin content, it can be judged that she has _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

Remarks: This question is on page 76!

(1) According to the number of white blood cells, it can be judged that she has (inflammation) symptoms, which can be treated like this (taking anti-inflammatory drugs and taking anti-inflammatory injections).

(2) According to the number of red blood cells, it can be judged that she has (anemia) and should eat more foods containing (protein) such as milk powder.

(3) According to the content of hemoglobin, it can be judged that she has (nutritional anemia) disease, and the cause is lack of (iron) in the body. In addition to medication, it should also be suggested to use (iron) pots for cooking.

On page 80 of the seventh grade summer vacation garden biology, Qingdao Edition, "Science and life" came into life (1).

What kind of gas is this?

( 1)，(2)，(3) Q。

1, insert one end of a hose into the limewater in two cups, make a small hole in the package, insert the other end quickly, press the package, and observe the change of limewater. 2. Lime water becomes turbid. 3. Hygiene, sealing and safety.

P56:

I wrote it horizontally, so I divided it line by line. Sorry.

Tang: Li Bai, Poet Immortal, Poet Saint, Early-onset Baidicheng, Three Histories and Three Partings.

Song: Su Shi, Li Qingzhao, unrestrained and euphemistic style.

Yuan: Zaju, Sanqu, Guan Hanqing, the injustice of.

Ming: A Dream of Red Mansions, Romance of the Three Kingdoms, Cao Xueqin, Luo Guanzhong.

The answer to a 70-page geography puzzle.

The topic is: 5. Make it quick (answer the name of a European country) Czech Republic

7, the branch just started to see children (answer the name of an African country) Congo

9. Both sides are Central Africa (answer the name of an African country).

10, love to watch bullfighting (answer the name of an African country) Cape of Good Hope.

Title: 1, Pigment Exhibition (answer the name of an Asian country) Answer: Israel.

See you tomorrow (answer the name of an Asian country) Answer: Jordan.

Today (answer the name of an Asian country) Answer: Japan.

Neither of them is here (answer the name of an Asian country) Answer: Yemen.

6. Be bent on making a windfall (answer the name of a European country) Answer: Italy

8. Engine output has been increasing again and again (answer the name of an African country) Answer: Madagascar.

politics

The first article 1A2A 3D 4C56B

The second article 1A 2B 3C 4B

The third article 1A 2B 3D 4ABC 5ABCD

The fourth article 1A 2B 3ABD

Choose to fill in the blanks:

1.B

2.C

3.B

4.D

5.C

6.D

7.A

8.A

9.C

10.B

1 1.D

12.C

13.A

14.C

15.A

16.C

17.C

18.A

19.D

20.C

2 1.B

22.C

23.B

24.D

25.A

26.C

27.A

28.B

29.A

30.A

3 1.B

32.D

33.B

34.D

35.D

36.B

37.A

38.B

39.C

40.B

4 1.A

42.B

43.A

44.C

45.C

46.D

47.C

48.D

49.D

50.C

Cloze: (with initials)

A:

come

teach

middle

children

student

speak

small

like

often

Performance, style, etc of playing; Play (music)

B:

demand

along with

any

speak

I

work

wrong

please

hand

thank you

C:

A

C

C

C

D

B

D

C

A

D 2。 (1) Returning farmland to forests and grasslands, planting trees, building shelterbelts, controlling deserts and establishing nature reserves.

(2) 1, Global Warming 2, Ozone Layer Destruction 3, Acid Rain 4, Freshwater Crisis

5, lack of energy 6, garbage 7, toxic chemicals 8, forest reduction 9, land desertification 10, accelerated species extinction