We can see the sun in daytime, but we can’t see it at night. A. a, the B. the, / C.——青夏教育精英家教网—

摘要： We can see the sun in daytime, but we can’t see it at night. A. a, the B. the, / C. a, / D. an, /

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We can't see ____________ sun at __________ night. But we can see it in ___________ daytime.

A. the; the; the　　 B. the; the; ×　　 C. the; ×; the　　 D. a; the; a

     We know the sun, the earth and the moon are in the universe. We see the sun in the daytime and the
moon in the night.
     The sun is much bigger than the earth, and the earth is bigger than the moon. So the sun is the biggest
and the moon is the smallest. The earth goes round the sun day and night. It goes at 30 kilometers a
second.
     The moon is our satellite (卫星). It is also our neighbor. It goes round the earth all the time. The moon
goes at 8 kilometers a second. The moon can't give out light or heat itself, and nothing can live on it.
     Men live on the earth. It is going round itself all the time. The earth gives us lives, food, water and so
on. We must get on well with it.

根据短文内容，补全下面句子(每空一词)。

1. The sun is the b_____ of the three.
2. The e_____ is bigger than the moon, but s_____ than the sun.
3. The m_____ goes round the earth.
4. We can see the moon in the n_____.
5. Men must get on w_____ with the earth

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阅读理解。

     We know the sun, the earth and the moon are in the universe. We see the sun in the daytime and the
moon in the night.
     The sun is much bigger than the earth, and the earth is bigger than the moon. So the sun is the biggest
and the moon is the smallest. The earth goes round the sun day and night. It goes at 30 kilometers a second.
    The moon is our satellite (卫星). It is also our neighbor. It goes round the earth all the time. The moon
goes at 8 kilometers a second. The moon can't give out light or heat itself, and nothing can live on it.
     Men live on the earth. It is going round itself all the time. The earth gives us lives, food, water and so on.
We must get on well with it.
根据短文内容，补全下面句子（每空一词）。
1. The sun is the b______of the three.
2. The e______ is bigger than the moon, but s______than the sun.
3. The m______ goes round the earth.
4. We can see the moon in the n______.
5. Men must get on w______ with the earth

查看习题详情和答案>>

We’ve talked about snails (蜗牛) and their slow move. But much of the time snails don’t move at all. They’re in their shells ---sleeping .

Hot sun will dry out a snail’s body. So at the least sign of hot sun, a snail draws its body into its shell and closes the opening with a thin cover. Then it goes to sleep. A snail will die in a heavy rain. So whenever it rains, it goes inside its shell house and goes to sleep. A snail can sleep for as long as it needs to. It can take a short sleep. Or it can sleep for days at a time. And it spends all the winter months in its shell, asleep.

In spring the snail wakes up. Its body, about three inches long, comes out of from the shell. When hungry, the snail looks for food. It can’t see very well. Its eyes, at the ends of the top feelers are very weak. But its sense of smell is very strong. It helps the snail to the new greens. Then the snail’s little mouth goes to work.

A snail’s mouth is no longer than the point of a pin(针). Yet it has 256,000 teeth! The teeth are so small that you can’t see them. But they do their work.. If you put a snail in a hard paper box, it will eat its way out. And if a snail wears out its teeth, it will grow new ones.

Mostly, a snail looks for food at night .But on cloudy days it eats in the daytime. It eats all day long. A snail can go on eating for hours and never feel full.

1.A snail__________.

A. moves more slowly in the daytime B. has thousands of feet

C. doesn’t move at all D. sleeps much of the time

2.In the sentence “A snail draws its body into its shell” the word “draw” means_________.

A. to make with a pen B. to keep away from

C. to pull D. to move to end

3.From the story we know_________.

A. the snail’s shell is very thin

B. a snail can’t see well

C. the snail’s nose is quite short

D. the snail’s body changes in different seasons

4.A snail goes to sleep when_________.