阅读理解. The rockets take astronauts and man-made satellites into space. The satellites are used for communication, weather monitoring and research. But how do satellites stay up without falling down? T 题目和参考答案——青夏教育精英家教网—

题目内容

阅读理解。

     The rockets take astronauts and man-made satellites into space. The satellites are used for
communication, weather monitoring and research. But how do satellites stay up without falling down?
     There are two opposite forces (力量) acting on the satellite. One of them is the force of gravitation
(地心引力), which tries to pull the satellite towards the earth. The other force is created by the rotation (旋转) of the satellite around the earth. This force tries to take the satellite away from the earth. With
these two forces, the satellite goes round and round. The gravitational pull of the earth (the force which
pulls everything towards the ground) is like a rope which keeps the satellite from flying away.
      Everything that goes up has to come down. It is only a matter of time before a satellite comes back
to the earth. As time goes by, the satellite loses its speed, which makes the gravitational pull stronger
than the force pulling it away. This makes the satellite crash (坠落) down to the earth.

1. Which of the following uses of satellites is NOT mentioned?

A. communication
B. monitoring the weather condition
C. doing some research
D. taking pictures

2. The force that pulls the satellite towards the earth is created by ________.

A. the earth
B. the satellite itself
C. the rotation of the satellite
D. the rope

3. Why can't the satellites fly away?

A. Because of the force from the earth.
B. Because the satellite is too big.
C. Because of the force created by the rotation of the satellite around the earth.
D. Because people on earth have made ropes to tie the satellites tightly.

4. The satellite will finally crashes down to the earth ________.

A. when it flies faster
B. when its speed slows down
C. when people cut the rope
D. when there is no electricity in it

5. Which of the following is TRUE according to the passage?

A. There are four forces acting on the satellite.
B. The force of gravitation makes the satellite go round and round.
C. As time goes by, the satellite will finally fall down.
D. The satellite will stay in space forever.

1-5 DAABC

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相关题目

     Yang Cangxu has recently become hot on the Internet. He is considered as a hero, and known
as"A Professional Life Saviour", because he has saved 24 people's lives during the past 26 yeasrs.
Yang, a typical Chinese farmer, lives in Baoji, Shanxi Province. He is good at swimming, which is
also his favorite.When he was young, he joined the army. ① The life in the army had a great influence
on him. It also helped to form one of his characters(性格) --being ready to help others.
     Just seven to eight meters away from his home flows a channel(水渠). The water is very deep
and flows fast. There is a bridge over the channel. Walking across the bridge is not an easy thing.
From time to time, people fall into the water. If this happens, the person must be rescued in time.
② Otherwise, he or she will be washed away by the water.
     ③ Yang Cangxu is always the first one to rush to the channel to save the drowning person.
We must learn from him.

1. 将①处翻译成汉语。

_________________________________________________

2. 根据②处内容，完成下面的句子。(每空一词)

Otherwise, the water will _____ him or her _____.

3. 根据③处内容，其将改为定语从句。(每空一词)

Yang Cangxu is always the first one _____ _____ to th e channel to save the drowning person.

阅读理解。根据短文内容用适当的单词完成下面句子。

阅读理解

根据短文内容用适当的单词完成下面句子:
1. In Chicago, it is __________ now.
2. Mike has a brother called __________. He is in school now.
3. Mike's parents will go to his city by __________.
4. His parents will come back on __________ 31st.
5. Mike and his parents will __________ a nice dinner on Christmas Day.

阅读理解。

     As the sun rose, a dewdrop (露珠) woke up. There it sat on a leaf, catching the sunlight. Proud of its
simple beauty, it was very happy. Around it were other dewdrops, some on the same leaf and some on
other leaves. The dewdrop was sure that it was the best, the most special dewdrop of them all.
     Ah, it was good to be a dewdrop.
     The wind blew and the plant began to shake, tipping (使倾斜) the leaf . The dewdrop became
frightened as it started to move towards the edge (边缘)of the leaf. Why was this happening? Things were comfortable. Things were safe. Why did they have to change? Why? Why?
     The dewdrop reached the edge of th e leaf. It was sure that this was the end. The day had only just
begun and the end had come so quickly. It seemed so unfair. It seemed so meaningless. It tried hard to do whatever it could to stay on the leaf, but it was no use.
     Finally, it fell. Below there was a mirror. A reflection of the dewdrop seemed to be coming up to meet
it.  Closer and closer they came together until finally.., the small dewdrop became a part of the great pond (池塘). Now the dewdrop was no more, but it was not destroyed.
     It had become one with the whole.

1. According to Paragraph 1, we know that the dewdrop _____.

A. didn't get on well with other dewdrops
B. thought its beauty was too simple
C. couldn't get any sunlight
D. thought itself as the best dewdrop

2. The dewdrop became _____ as it started to move towards the edge of the leaf.

A. scared
B. happy
C. proud
D. comfortable

3. Which of the following is TRUE according to the story?

A. There was only one dewdrop on the leaf.
B. The dewdrop did nothing before falling.
C. The mirror in the story refers to the pond.
D. The dewdrop was actually destroyed.

4. What does the underlined word "reflection" mean?

A. 反映
B. 考虑
C. 沉思
D. 倒影

5. The story mainly tells us that _____.

A. we should work together against difficulties
B. people should not be too proud of themselves
C. one should work hard for his/her goals
D. it's good to become one with the whole

阅读理解。

Mascota(吉祥物)for the Olympic Games

(the first Olympic mascot)
20 th	23rd	26 th	27 th	29 th
1972	1984	1996	2000	2008
Munich(慕尼黑)	Los Angeles	Atlanta	Sydney	Beijing
Germany	America	America	Australia	China
Europe	North America	North America	Occania	Asia

1. From the information above, we know the Olympic Games is held every _____ years.

A. 3
B. 4
C. 5

2. The mascots for Beijing Olympic Games are 2 more than those for _____ Olympic Games.

A. Sydney
B. Los Angeles
C. Atlanta

3. The mascot for the_____Olympic Games was the first Olympic mascot in Olympic history.

A. 1996 Munich
B. 1984 Beijing
C. 1972 Munich

4.The 23rd and 26th Olympic Games were held in the same _____.

A. town
B. city
C. country

5. Which of the following information is NOT true?

A. The 1996 Olympic Games was held in America.
B. The 27th Olympic Games was held in Europe.
C. Beijing is getting ready for the 29th Olympic Games.

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