2. From Peter’s plan we learn that Peter likes ______.

A. table tennis　　　　　　　　　　 B. music　　　　　　　　　　　　　　 C. art　　　　　　　　　　　　　　　　 D. basketball

1. Peter’s study group meeting will be on ______.

A. Saturday morning　　　　　 B. Monday afternoon　　　　　 C. Saturday evening　　　　　　 D. Friday afternoon

4. The scientific way of saying "The stars are shining tonight" should be ______.

A. the stars have been shining all the time　　　　　　　　　 B. the stars seen tonight will shine four years later

C. the stars were shining long ago but seen tonight　　 D. the starlight seen today could be seen four years ago

(3)

Mary’s plan for next week

Peter’s plan for next week

3. Sunlight obviously (明显地) ______ than the light of the moon

A. has to travel a greater distance　　　　　　　　　　　　　　　　 B. moves less quickly

C. travels much more quickly　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 D. is less powerful(有力的)

2. If you stand 200 metres away from a man who is firing a gun to start a race, you will find out that ______.

A. you can hear the sound before you see the smoke　 B. the sound does not travel as fast as light

C. the sound will reach you before the man fires　　　　 D. sound travels about a million times faster than light

1. Light speed is ______ sound speed

A. as fast as　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 B. a million times slower than

C. about millions of times faster than　　　　　　　　　　　　　 D. about a million times faster than

4. Does the writer think computer is a good thing?

A. It isn’t mentioned.　　　　 B. No, he doesn’t think so.　　　　　　　　　　　　　　　　　　　　　 C. He doesn’t know.　 D. Yes, he does.

(2)

Light travels at a speed which is about a million times faster than the speed of sound. You can get some idea of this difference by watching the start of a race. If you stand some distance away from the starter, you can see smoke from his gun before the sound reaches your ears.

This great speed of light produces some strange facts. Sunlight takes about 8 minutes to reach us. If you look at the light of the moon tonight, remember that the light rays left the moon 1.3 seconds before they reached you. The nearest star is so far away that the light that you can see from it tonight started to travel towards you four years ago at a speed of nearly 2 million km. per minute. In some cases, the light from one of tonight’s stars had started on its journey to you before you were born.

Thus, if we want to be honest, we can’t say, “The stars are shining tonight.” We have to say instead, “The stars look pretty. They were shining four years ago, but their light has only just reached the earth.”

3. What can computers help children to do?

A. To think clearly, to do homework and to write.　　　 B. To play games, to do math and to copy.

C. To think clearly, to get information and to use it well.　　　　　　　　　　　　　　　　　　　 D. To count, to clean the house and to get information.

2. Does everyone think computers are good for children?

A. Yes, they do.　　　　　　　　　　　　　　　　　　　　　　　　　　　　　 B. No, not everyone thinks so.

C. They don’t know.　　　　　　　　　　　　　　　　　　　　　　　　　 D. They are not sure.

1. “To be familiar with” means to ______.

A. know nothing　　　　　　　　 B. know about　　　　　　　　　 C. dislike　　　　　　　　　　　　　　 D. like