1. Strange; suspicious
2. Describe the mess; Messy; Be discredited/discredited
3. Describe the sound of the wind blowing the leaves
4. Ignorance; unreasonable
5. Short legs and feet, slow walking, wobbly.
6. Describe things as very popular, saying that they are as popular as the wind blows down vegetation and will follow the scene.
7. Appreciate and understand the beauty of things or works of art. ..
8. Anxiety refers to anxiety.
(2)
1. Resist 2. Think of finance and clothes as
3. Describe speaking tirelessly or speaking well. 4. Lots of them
5. insult 6. only
7. Like a dog's teeth. 8. sticky
(3) Omission
two
( 1)
1. This novel is in France.
2. Journalists and publishers who have experienced young powder panning.
3. Collection of Japanese Nobel Chuanrui Yasunari's Works
4. Ji Xianlin scholar and writer "Selected Prose of Ji Xianlin"
5. Tan Jiazhen
6. The complete works of Zhu Ziqing's prose.
7. American translator Xiao Gan
8. My Sincere Care for Gardens —— On Shao Jun Education in Suzhou Gardens
9. Yi Shu is Lao She, Xiangzi of Camel.
10. Oskarov Polkakin
(2)
1. Wen Tianxiang Wenshan Collection
2. Gong Zizhen in the late Qing Dynasty
3. The story of Xiaoshitang
4. Du Dynasty
5. Bai Juyi
6. Collected works of Mr. Linchuan in Northern Song Dynasty
7. Su Shi
8. Manual water control
9. Other clouds
(3)
1. Su Shi Su Su Zhexun
2. Li Shihao, Xin 'anli and Tongguanli
3. Four great literati in the early Tang Dynasty, Yang Jiong, Lu,.
Coulee and Du Qiao.
Refers to Cao Cao and his sons Cao Pi and Cao Zhi in the Han and Wei Dynasties.
(1) Eight Great Masters in Tang and Song Dynasties
(2) Han Yu
Exercise 3
1.C
2.D
3.D
4. A spring outing to Qiantang Lake is the main feature of this poem. It not only writes a strong feeling of spring, but also writes a strong feeling of natural beauty. In the poem, feelings are attached to the scenery, and between the lines, the joyful and relaxed feelings and delicate and fresh feelings about the spring scenery of the West Lake are revealed.
5.( 1) The main reason is that poets have experienced the changes of the world and no longer have the mood of enjoying plum blossoms in the past.
(2) Missing
(3)D
6. Uplink: 2 1 8 6 4 1 1
Downlink: 3 7 9 5 10 12
Exercise 4
( 1)
1( 1) The courtyard is as empty as water, and the water is covered with bamboo and cypress.
(2) What night is there no moon? Where is there no bamboo and cypress? But few idle people are like my ears.
2.C
A bosom friend is hard to find, but time is fleeting.
4. The moonlight in the pine forest and the crystal stone in the stream. (Wang Wei's "Living in Autumn") ② Is there frost on the bright line at the foot of my bed? . (Li Bai's Silent Night Thinking) ③ The bright moon surprises the magpie, and the breeze crows in the middle of the night (Xin Qiji's Xijiang Moon)
(2)
1.( 1) You can't fully understand the situation without visiting and asking for advice.
(2) Therefore, we must climb mountains and wade in person, work hard in person, and are not afraid of hardship.
2. Water control must be done by yourself. Only in this way can we know the truth and get the support of the people.
3. Love leisure and hate labor, forget profit and justice.
4. Hai Rui Ming Dynasty Wu Han "Hai Rui dismissed from office"
(3)
1. Ask it with a purpose.
2 .. or tell it: "sunlight is like a candle."
3.A
It is impossible to have a correct understanding of things without direct observation and hearsay.
In order to get to know Sun, he asked people for advice many times. He is willing to listen to other people's opinions and has a strong thirst for knowledge.
(4)
1.D
2.( 1) The shallows are endless, and the depths are unpredictable, just like the wisdom of a gentleman.
(2) Mud and sand are mixed, and finally there is clear water, just like a gentleman is good at transforming things.
3.A
(5)
1.( 1) Leave and give up.
(2) hatred
2.( 1) bit has been high and its meaning is getting worse.
(2) the official benefits are big, but the heart benefits are small.
(3) Lu is too thick to take.
Liu Bangshan accepted Sean's good words, defeated Xiang Yu and unified the whole country.
Zou Ji satirized Qi Wang Nengchen.
Li Sijian's suggestion to drive away the guests
Ten pieces of Wei Zhi's "Taizong admonition"
Exercise 5
one
1. Zhu Ziqing buys books as clothes.
In order to buy a new Webster's dictionary.
(1) was made by Zhu Ziqing's father when he got married.
(2) But at that time, I really couldn't bear to part with the dictionary, thinking that I would be able to redeem my big coat in the future.
4.
5.( 1)
(2)
6.( 1)
(2)
(3)
two
(1) Donglin Academy, also known as Guishan Academy, is one of the famous academies in ancient China. Donglin Academy was founded in the first year of the Northern Song Dynasty, that is,111,which is the place where Shi Yang, a famous scholar, gave lectures for a long time. Waste it in the future. In the thirty-second year of Wanli in the Ming Dynasty, namely 1604, Lindong scholar Gu Xiancheng and others rebuilt it and gathered here to give lectures. They advocated the spirit of "reading, giving lectures and patriotism", which aroused the general response of scholars all over the country and became famous for a while. Gu Xiancheng's famous couplet "The Sound of Wind and Rain, the Sound of Reading, Family Affairs, State Affairs and World Affairs" is a household name, which has inspired many intellectuals and greatly promoted the development of China's traditional cultural thought. It has the reputation of "Lindong, known as the world's academic number one". Donglin Academy has become a cultural gathering place in the south of the Yangtze River and the main public opinion center for discussing state affairs. In 2002, it was completely restored, including Shipaifang, Chi Pan, Lindong Jingshe, Lizetang, Yiyongtang, Yanju Temple and Daonan Temple.
(2) Qian Zhongshu's former residence was built by Qian Zhongshu's grandfather Qian Fujiong on 1923 and his uncle Qian Sunqing on 1926, covering an area of two acres, four quarters and eighty-eight cents (1600 square meters), featuring seven bedrooms and three entrances to the Ming and Qing Dynasties, and absorbing western architectural features. Grandfather Qian Fukun inscribed it as "Shengwutang", and the plaque was written by the Korean Jun, then governor of Jiangsu. Qian Fuhui's collection of classics and history is hung in the hall, encouraging Qian's descendants to study hard, live and work in peace and contentment, and inherit the family style. Qian Zhongshu spent his childhood, adolescence and youth here, and the simplicity, simplicity and enterprising spirit of Shengwutang left an indelible impression on his heart.
Exercise 6
( 1)
1. Suzhou gardens are not only highly ornamental, but also of great artistic, historical and cultural research value.
2. Time logical order
leave out
4.( 1) Suzhou gardens are generally centered on water and full of Jiangnan interest.
(2) structurally, small wins big, small sees big, and moves freely.
(3) The colors of the white wall and tile chestnut column are in line with nature.
(4) In terms of space processing, sometimes it is broad-minded, sometimes it is tortuous and deep, or hidden or exposed, or deep or shallow, and there is reality in the virtual, and there is emptiness in the real.
(5) The city is decorated with mahogany furniture, famous calligraphy and painting, couplets and bonsai, which looks beautiful and elegant.
5.( 1) Hengyun Mountain Villa
(2) Xi Hui Park
(3) Lao Liyuan
(4) Jichang Garden
(2)
1. The temperature distribution and air flow in the pyramid structure are different from those in other buildings, so it has the same functions as refrigerators and dehumidifiers.
2. nariman Novo, a researcher, did an experiment in the building of Lord Pyramid.
3. Mummify animal remains without decay. Other metal objects will not deteriorate or rust due to the rapid loss of water vapor.
4. The curse of Pharaoh, the mystery of pyramid construction.
Exercise 7
( 1)
1. Clue metonymy
2. In the front line of the battle, women are rare, so the appearance of female health workers surprised the soldiers and showed their bravery from the side.
3( 1) shows her inner contradictions before making a choice.
(2) She knew that he would end up with the enemy's bunker when he picked up the explosive charge.
(3) "Sculpture-like" means that the company commander was shocked when he heard that they were husband and wife and felt reverence for them.
For example, in paragraph 1, "He was polishing his trumpet when she came. She gave him a look and reported to the company commander ","Many people don't understand how she likes talking to him ","However, in the end, between him and the company commander, she didn't choose him "and so on.
The company commander was moved by the couple's brave and fearless behavior, so he tied a red cloth strip on the trumpet, which meant that the couple would be together forever.
(2)
1. It is a deep-rooted and persistent desire to pursue truth, goodness and beauty.
2. Q: What made that pot of rice go bad? It is time.
What makes ordinary rice into mellow wine? It's about time.
Is time a good magician or an evil magician? Neither. Time is just a simple multiplication, doubling the original value.
Function of this article: Sublimation theme connects the preceding with the following.
3. In the world, we also see that once naive teenagers begin to degenerate, they will inevitably get deeper and deeper, and finally become ashamed and disgusting. But on the contrary, time has added a gentle smile, considerate eyes, mature elegance and wisdom charm to those who pursue kindness.
Expression effect: Contrastive rhetoric highlights the two sides of time.
Exercise 8
one
1. Zhou Su Pang Tong
2① River: same as "combination" ② See also: connecting "now"
③ Reversal: Same as "back" ④ Jane: Same as "pick"
⑤ Li: Same as Calendar ⑤ Violence: Same as Exposure.
⑦ Bandits: preach "no" ⑧ Measures: the same as "measures"
3① Kechushan
② Lushan Mountain
③ Yinshan Mountain
④ Emei
⑤ Huangshan
6 Wushan
Mother tongue, I want to tell you.
Nowadays, language has become a tool for communication between people. English is almost all over the world, and American English occupies a large area. When the East of the world suddenly rises, people see the majestic China lion. Its awakening means that Chinese has gone to the world, and Chinese has suddenly become the dominant language in the world. Mother tongue, I want to tell you.
Mother tongue, you are the most beautiful geometric pattern in the world. Every stroke reveals the sense of oriental bone, every painting contains the charm of China, and every word traces the rise and fall of Dragon City. Hieroglyphs mean that things are your best brothers and sisters. When you open the Chinese dictionary, you will see your Chinese character lines and columns. From less to more, the simplicity of "one" is sacrificed, but it is even better. "One" also has infinite charm, just like the road of life, it should be clean and frugal from beginning to end. Add a stroke to "one" and it will become "ten" and "two". Add a few strokes and it will become all kinds of words with endless pronunciations. Some words are even more complicated than foreign languages, but they are very interesting, and some may be simple, but they contain philosophy. In ancient times, the word "sun" was written as the sun with a point in the middle, and then it was handed down like this, and it gradually became the "sun" of "today", which is a hieroglyph. Some will also express their feelings-pity, sadness, fear, and some are big families-robes are bubbling and burning.
In your mother tongue, you not only have 3,000 compatriots, but also can create thousands of beautiful words from Qian Qian. On the land of China, you are our most familiar partner, and how many literati have written famous sentences through the ages under your application, which have been passed down to this day. You gave a wonderful passage in Long song's Li Sao. No matter how vivid the song is, it will become meaningful under your rhyme. When China people who love their mother tongue write square characters for the first time, they bend them horizontally, vertically, left and right, revise them countless times, and copy them countless times, just to make you more pleasing to the eye. How can people in China forget you and not love you? You described by Wang Xizhi, Qinyuanchun? You are in the snow.
Mother tongue, I really want to tell you that you are the civilization of our Chinese nation and the backbone of our Chinese culture.
Walk into the screen
Walking into the silver screen, isn't it a pleasure to have friends from afar? At the opening ceremony of the Beijing Olympic Games, this old saying, which has been told by China people for thousands of years, rang again. At 8 am on August 8, 2008, friends from all over the world gathered in Beijing to witness the opening of the world-famous Olympic curtain. I stared at the screen, and my heart was filled with infinite passion. At this moment, I am the proudest China person, and I am all in the silver screen. Yes, I heard cheers from all over the world. What a shocking scene this is! From 2008, percussionists beat the countdown number, from the bird's nest model built by the green messenger to the lighting of the main torch after Li Ning ran 500 meters around the National Stadium ... everything was so magical, so beyond imagination and wonderful. The historical footprint of the Olympic Games, consisting of 29 fireworks, rumbles in the sky. Representing the 29th Olympic Games, we entered China, Beijing, the Bird's Nest and my heart step by step. How can I describe it? This is also a step for the Chinese nation to rise rapidly and span a hundred years! I have tasted the feast cooked by Chinese culture for five thousand years. All men are brothers within the four seas. With the chanting of Confucius' 3,000 disciples, on the long scroll, suddenly, countless ancient characters came one after another, magnificent. It is not only like the ancient movable type printing in China, but also like the modern computer keyboard. You see, there is an ancient word "He" in the center of the picture scroll. Slowly, with the wave-like waves, another word "He" appeared, and the last modern word "He" appeared in the picture. The word "harmony" not only explains the evolution of Chinese characters, but also implies the humanistic concept of China Confucianism-"harmony is precious". On the long map spanning time and space, the body expresses the remoteness of mountains and the agility of water; Taiji shows the wisdom of harmony between man and nature; Good at dancing with long sleeves, moving the long and prosperous Silk Road; Everyone paddles to tame the unruly waves; The fragrance of tea, the whiteness of porcelain, the sonorous pace of culture in bamboo slips ...! At the end of the opening ceremony, a huge blue earth rose slowly, when Liu Huan and the famous British singer Sarah? When Bleiman sang You and Me, the audience immediately applauded. With the singing, thousands of volunteers and children's "smiling faces" bloomed in the venue, and 2,008 smiling faces of flames outside the venue rose in Ran Ran in the night sky. The theme of "One World, One Dream" once again haunts everyone with different skin colors. Great country, the imperial capital Kyushu, the five rings held high, all over the world, the ceremony is full of weather. I can't forget that scene. And these are all given to me by Silverscreen.
Fairy tales growing up with me
As long as you are a swan egg, it doesn't matter if you were born in a duck farm. -inscription
Although I am old, I still like reading fairy tales, and I still can't put it down. I still remember when I was a child, I was always pestering my mother. When I am free and going to sleep, I have to tell one fairy tale after another in order to sleep quietly and peacefully. Now, although the memory is fading away, the spoiled girl no longer exists. Only it, the ugly duckling, is still unforgettable. Eight years ago today, I first heard this story from my mother. Today, eight years later, turning that page again, a warm current welled up in my heart.
When I first heard the story of the ugly duckling, I had a mixed feeling of sadness and joy. I shed tears for the misfortune and suffering of the duckling, and I also smiled through tears because it finally turned into a beautiful and noble swan. At that time, I just laughed and cried for the ugly duckling's various experiences, but I never thought about the deeper meaning of this story. I just have a longing and fantasy for the happy ending of the story, hoping that one day, I can become a beautiful white swan like a duckling. For this beautiful dream, I remember this beautiful story even more.
Now, when I relive this story, I unexpectedly get a completely different feeling. This special duckling, which is pushed out, laughed at and attacked everywhere, has always had a beautiful dream. For this beautiful dream, it has no despair and no sinking. In the face of attack, it is indomitable and treats difficulties with a persistent attitude. It believes that even in adversity, through unremitting pursuit and efforts, a beautiful ideal will be realized and happiness will come to you. After unyielding struggle, it finally grew into a beautiful and noble white swan and finally realized its dream. Isn't it all from the eternal dream in its heart?
Heart, trembling. Every duckling has such a dream. It yearns for beauty and pursues happiness. He desperately flew to the noble swan, preferring to die in the unremitting pursuit of beauty. Isn't this the spirit that young people in our contemporary society need? Make unremitting efforts for the ideal. Although ugly and small, the ugly duckling is an example for us to learn. I watched Ugly Duckling excitedly again, and suddenly I couldn't help laughing, for this ugly duckling and for myself. It was Ugly Duckling that woke me up. I didn't want to struggle before, I didn't want to suffer, and I waited for the opportunity. I always thought that the goddess of luck would take care of me. I didn't expect success to turn around without effort and sweat, bow down in the face of failure, and give up easily when encountering some difficulties. What a cowardly performance. Gold will always shine, and talents will always be recognized. The ugly duckling went through a series of hardships, which made it complete a noble transformation. Difficulties and setbacks in life will also be my unique experience, and I will eventually welcome my own flowers and applause.
The Ugly Duckling grew up with me, and I don't know how I will feel when I watch it later. However, there is a saying that I firmly engraved in my heart, always inspiring me and urging me to forge ahead-as long as you are a swan egg, as long as you have ideals and pursuits, and strive for your goals, even if you were born in a duck farm, it doesn't matter.
I play all by myself. Choose me as the best answer! ! !
Mathematics (choose+fill in the blanks)
Exercise 1: CC, CB, DB, B30344 and 616; 25:08 80 5 2
BBC, www.821056010.
Exercise 3 c b d c a b b (4) [6] (7) (2) [3] 2/3 0.69.75 * 1015 or √7 right angle10.
Exercise 4 b c d d d d a d b-1/2 3-√ 5 √ 3-√ 2 2.031003 5; 8 15 (√) is the root sign. )
Exercise 5 c b c c d c c c c c c c c 901. The mouth, the king and the field pass through the parallelogram ABCD, and the diagonal intersections of AC=BD and AC⊥BD are 22cm and 20 cm 6 3 45 8.
Exercise six BCA, BCA, BCD, parallelogram, square, circle, angle, square, isosceles trapezoid, circle, equilateral triangle, square, circle 90 AB=CD 80 2 28.
Exercise 7: DBC, CAA, AAA ordered real number pair 13 3 (-3,-1)= 3≦-2( 1, 2) (1, -3) (-3, -7).
Exercise 8bbc BC (3,0) (0,1) (-6/7,9/7) y = x+3s = 264-24t-2-1y = x-3y =13x-6544.
Exercise 9cbb BC-19/2y = 3x+51433 three y=-x- 1 minus one, two and four x y 8 x=2, y=7 (use braces for yourself) 5120/.
Exercise10dadb95 20310188.1993m+73n+7.
Exercise11a BBB BCD BBB 2-2325/84 (4, -3) Y =-5/2 X =- 1, Y = 2 (cheer yourself up) 9 6 4.
English (not all right, high quality writing)
Exercise 1
One.
Wolf 2. Go 3. Dress at least 5. Eat delicious 6. Nowhere to go 7. Pleasant 8. Crazy 10.
Two.
1.D 2。 B 3。 A 4。 B 5。 B 6。 B 7。 An eight. D 9。 A 10。 A 1 1。 B 12。 A
Three.
1. and 2. From 3 inches 4. At 5. 6. For 7 inches, for 8 inches 9. And 10.
Four.
Practice practice practice practice practice practice practice practice practice practice practice practice practice practice practice practice practice practice.
watch
Five.
1. Don't drive while driving.
2. won't it rain
3. Let five-year-old children live alone
4. The ninth one is the same as the last one
Make noise and do sth.
Six.
1.C 2。 B 3。 A 4。 A 5。 A six. C 7。 D 8。 D 9。 A 10。 D
Exercise 2
One.
1. Leaves 2. Activities 3. Ninth 4. Worried 5. Beautiful 6. Useful 7. Amazing 8. Less 9. Better 10. Weight
Two.
1. has less than
Step 2 help
3. Spend better results on
As interesting as ...
5. Fortunately, it was put out
6. Famous travel
Three.
1. How far is it
2.b is
3. Don't talk
4.B /
5.b likes it very much
6.b doesn't like it
7.b to answer
8.b will be
9.b no
10. Open
Four.
1.C 2。 B 3。 C 4 explosive B
Five.
1. Policeman 2. Electronic dog 3. Frog
Six.
More helpful than
2. I really had a good time
Step 3 keep a secret
Same as ...
5. Reduce the time spent on long-distance buses
6. it's not open, is it
Exercise 3
One.
1. quietly 2. Suitable for 3. Popular 4. Completed 5. 12th place 6. Word 7. Twice 8. Lost 9. Medal 10. Save.
Two.
1.C 2。 C 3。 D 4。 A 5。 B 6。 B 7。 C 8。 B 9。 B 10。 B
Three.
Same as mine.
be different from
Step 3 be careful of getting hurt
Step 4 make sure it's closed
5. Injured and hospitalized
6. Lost his life
7. In case of danger
8. getting smaller and smaller
Four.
1. herself 2. theirs 3. me 4. themselves 5. them 6. yourself 7. us 8. It's already 9 o'clock. Our 10.his
Five.
The most suitable exercise for studying alone took a beautiful and dangerous choice to make.
Six.
1.D 2。 B 3。 A 4。 D 5。 D
Exercise 4
One.
1. Feed 2. Feather 3. Close 4. Reader 5. Boring 6. Language 7. Report 8. Their own 9. Smell 10. Organization
Two.
1.in2. About 3.on4.from 5.as6.of 7.of 8.on9.for10.
Three.
most popular
2. Tell so many jokes
3. Saved from the past
4. There is a problem
Pay a lot for
6. Be happy because you are good at telling.
7. Protection cannot survive
live up to
Four.
1. Done 2. Speak 3. Brush 4. Yes 5. Flying 6. Watching 8. Arriving 9. Stop 10. Chatting.
Five.
1.B 2。 A 3。 A 4。 B 5。 C 6。 D 7。 An eight. D 9。 B 10。 C
Six.
The exciting, famous, most popular and interesting cleaners are more beautiful and the best.
Exercise 5
One.
1. Interest 2. Hunter 3. Keep 4. Farmland 5. Hunger 6. Solve 7. Yourself 8. Wednesday 9.less 10. Teeth
Two.
1. Play 2. Worry 3. Blowing 4. Trying 5. It happened 6. Will watch 7. Keep 8. Feed 9. Washing 10. Look.
Three.
1.B 2。 B 3。 B 4。 A 5。 B 6。 B 7。 An eight. C 9。 D 10。 A 1 1。 B 12..B
Four.
1.B 2。 C 3。 C 4 explosive D 5。 D 6。 A seven. C 8。 B 9。 A 10。 C
Five.
1. Youth Award.
He is very helpful.
3. Yes, he is.
He jumped into the water quickly and tried his best to save the boy.
5. Zhang Li.
Exercise 6
One.
1 .thin 2. Close the door 3. Hero 4. Advertisement 5. Action 6. Bamboo 7. Life 8. Laugh 9. Busiest 10. Weight
Two.
1. less than
study on one's own
3. Same as ...
4. How's it going
5. Belong to
Step 6 be able to
7. shorter than
8. Most popular
go on foot
He is alone.
Three.
1.on2.on of 3.out of 4.at5.in6.in7.on8.on is about in 9. To10.at.
Four.
The cigarette dropped, knocked, hit, and got through. It can help. Here we are. Thank you.
Five.
1. stopped. 2. Found it. Found it. 3. Got it. 4. Dead. 5. Used to be 6. Will be 7. Feel it. 8. Waiting. 9. Go 10. Will meet.
Six.
1.D 2。 C 3。 A 4。 C 5。 B
Exercise 7
One.
1.C 2。 A 3。 B 4。 A 5。 C 6。 C 7。 An eight. C 9。 A 10。 D
Two.
1.B 2。 C 3。 B 4。 D 5。 A
Exercise 1 (multiple choice questions at the bottom)
1. Leaf air column 2 solid vibration 3 solid energy transmission 4 loudness tone 5 timbre frequency 6 vacuum can't transmit sound 7 distance can't be too short 8 loudness timbre tone loudness tone loudness 9 human ear sound source 10( 1) Yes Yes Yes (2) EPDM 1 1 mechanical alarm clock B 654. 38+02 solid sound transmission is better than gas sound transmission. 13 has large amplitude and loudness. Attenuate the noise from the sound source. 2 1( 1) A (2)0.29 seconds 22( 1) has a small attenuation in the propagation process ... hundreds of meters to tens of thousands of meters ② have a great destructive effect on buildings.
Exercise 2
1 curing exotherm 2 cannot exceed the melting point. Tungsten can lead to a lower melting point than tin. Ice can melt and absorb heat. Heavy water vapor liquefaction exotherm 6 can melt and absorb heat. Curing exotherm 7 Liquefaction, Liquefaction, Sublimation, Boiling, Vaporization, Absorption of Heat 9 Leaf Evaporation 10 Snow Melting1Steam Liquefaction 12 Gas Alcohol 13.20 The temperature decreases more and more slowly with time. 22 A Go to two identical beakers, each containing the same amount of alcohol and water, and put both cups in the shade. After a while, it is different from the liquid in two cups. Because the evaporation of water absorbs heat, the temperature of wet cloth is lower and the moisture content is more, so the evaporation of water in wet cloth is reduced. If the readings of two thermometers are similar and the water content is low, it will increase the water evaporation of wet cloth. The readings of the two thermometers are quite different.
Exercise 3
1。 3× 10 8 sound speed is slower than light speed. Sound travels at different speeds in different media. Red, red and black. Ultraviolet fluorescence, infrared and ultraviolet rays. 4 dispersion of red and purple light. The virtual image of candle cannot be invisible. 6.3 Reflection angle = incident angle 7. Reflection angle = incident angle reflection angle, and the normal and incident angle change with the incident angle in the same plane. The size of 14 cannot be compared with the relationship between the object and the distance from the image to the plane mirror.
Exercise 4
1 Light travels at different speeds through inhomogeneous media. 2 virtual image refraction, virtual image reflection, 3 coin light refraction, 4 the more convex the convex lens is, the shorter the focal length is, and 5 the plane mirror changes the optical path of the convex lens into an inverted enlarged image F < U < 2F6. A drop of water is equivalent to the refraction angle U < F7 of the lens when the deflected light is transmitted from the medium with fast propagation speed to the medium with slow propagation speed, from the object to the lens image to the lens 8AC D B 9.