题目
题型：同步题难度：来源：
wrong. The sky has no colour. It looks blue because we are looking at blue sunlight. The sunlight is
shining on little bits of dust ( 灰尘) in the air.
Is the sky full of air? I"m sure that you have asked this question, too. We know that there is air all
around the world, but we couldn"t fly very high because as we go higher, the air gets thinner. If we go far
enough away from the earth, we find there is no air.
Maybe we can answer some questions now. What is the sky? Where is it? It is all round the world. The
sky is space (宇宙空间). In space there is nothing, but only the sun, the moon, and all the stars.
B. we like this colour
C. we don"t have other colours
D. we don"t like other colours
B. a big ball with air all
C. full of dust
D. space with the sun, the moon and the stars
B. Air and blue light.
C. Our own feeling.
D. Both A and B.
B. the high sky is full of dirty air
C. there is no air in the high enough sky
D. the sun is too hot
B. wants to tell us not to go to space
C. once flew in the sky
D. enjoys answering people"s questions
答案
核心考点
试题【请仔细阅读下文，然后根据短文内容选择正确答案。 If someone ask you, "What colour is the sky?"I think】；主要考察你对教育文化类等知识点的理解。[详细]
举一反三
Years ago they knew many things about the moon. They knew how big it was and how far away it was from the earth. But they wanted to know more about it. They thought the best way was to send men to the moon.
The moon is about 384 000 kilometers away from the earth. A plane cannot fly to the moon because the air reaches only 240 kilometers away from the earth. But something can fly even when there is no air. That is a rocket(火箭)
How does a rocket fly? There is gas(气体)in the rocket. When the gas is made very hot inside the rocket, it will rush out of the end of the rocket, so it can make the rocket fly up into the sky.
Rockets can fly far out into space. Rockets with men in them have been to the moon. Several rockets without men in them have flown to another planet(行星)much farther away than the moon. One day rockets may be able to go to any place in space.
B. how heavy
C. how old
D. how big
B. universe
C. sun
D. moon
B. there is no gas in the plane
C. the plane is not strong enough
D. the plane must be driven by a man
B. keeping the men in the rocket warm
C. making the rocket fly up
D. cooking food for the men
B. the satellites of the sun
C. the sun
D. another planet of the sun
You can easily __4__ out the pull of the earth. If you weigh __5__ , you will know how__6__ gravity
is pulling you.
Since there is gravity, water runs downhill. when you__7_ a ball into the air, it falls back down.
Because of gravity, you do not fall off the earth __8__ it turns around.
Then, can you get __9__ from the earth and go far out into space?
Now you can do it, because spaceships have been invented. The spaceship will go fast that it can get
rid of (除掉) the earth"s gravity and __10__ you into space.
( ) 2. A. pulls
( ) 3. A. said
( ) 4. A. find
( ) 5. A. myself
( ) 6. A. much
( ) 7. A. fly
( ) 8. A. as
( ) 9. A. off
( ) 10. A. get
B. push
B. called
B. look
B. yourselves
B. many
B. throw
B. and
B. away
B. bring
C. makes
C. told
C. saw
C. you
C. heavy
C. get
C. because
C. lost
C. carry
D. hits
D. spoken
D. watch
D. yourself
D. long
D. make
D. or
D. left
D. throw
Some people think that they will get ill if they use their brains 1 It is not 2 . It"s known to all
that the more you use your brains, the beller they will be, and the wiser you will 3 . Of course. if you
want to make your mind 4 clear and bright, you must 5 a rest.
To middle school students, 6 their brains in the morning is good for 7 . There are many 8
to rest, for example, sleep, take a walk outdoors or do morning exercises.In 9 life, to eat some eggs,
meat, fresh vegetables and fruit 10 good for the brains. Wish you a wise man.
| ( )1. A. very ( )2. A. as ( )3. A. change ( )4. A. hope ( )5. A. take ( )6. A. use ( )7. A. them ( )8. A. places ( )9. A. every day ( )10. A. is | B. much B. it B. look B. know B. let B. uses B. you B. ways B. everyday B. was | C. best C. that C. become C. do C. give C. used C. us C. rooms C. each day C. are | D. many D. such D. turn D. keep D. make D. using D. me D. days D. any day D. were | ||||
| 阅读下面的短文并选择合适的答案完成这篇短文。 Plants are very important living things. Life can not go on 1 plants. This is because plants can make food 2 air, water and sunlight. Animals and man 3 do so. Animals get their 4 by eating plants 5 animals, Man gets his food 6 eating plants and animals, 7 . So animals and man 8 plants to live. This is 9 we find there are so many 10 around us. | |||||||
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