题目内容

Light travels at a speed which is about a million times faster than the speed of sound. In one second, light travels about 300,000 km, but sound travels only 344m. 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 come 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(光线)left the moon 1.3 seconds before they reached you. The nearest star is so far away that the light which 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 started on its journey to you before you were born.

Thus, if we want to be honest, we cannot say “The stars are shinning tonight.” We have to say, “The stars look pretty. They were shining four years ago but their light has only just reached Earth.”

1.If you stand 200 meters away from a man who is firing a gun to start a race, you will find out that _____.

A. you can hear the gun before you see the smoke.

B. sound does not travel as fast as light.

C. the sound of the gun will reach you before the man fires his gun.

D. sound travels about a million times faster than light.

2.Sunlight clearly _____ than the light of the moon.

A. has to travel a greater distance

B. moves less quickly

B. travels much more quickly

D. is less powerful

3.What does “it” in the second paragraph refer to?

A. moon light B. light rays

C. the nearest star D. the moon

4.The light of the nearest star you see tonight has been ______ for years.

A. on the earth B. on the moon

C. away from the sun D. away from the star

练习册系列答案
相关题目

A middle-aged man with a long beard was caught by the police for bad behavior and property damage. The man, Bill Wild, checked into a hotel last night, telling the clerk he would pay cash in advance and would be staying for four nights. He then asked her where the nearest store was and she told him it was John-Johns.

Wild went to the store and bought three gallons of honey and four gallons of chocolate syrup (糖浆). The cashier asked him why he wanted these things and he replied, "I’m trying to become a sweeter person." The cashier smiled at the joke. Wild drove back to the hotel. He opened all bottles and poured them into the bathtub (浴缸). He added warm water to the mix. He tuned the radio to an opera music station, took off his clothes, jumped into the tub, and started singing loudly with the music.

Fifteen minutes later, the neighbor phoned the clerk complaining about the noise. The clerk knocked on Wild’s door, but he just kept singing. She phoned his room, but he didn’t answer. Then she called the police, who arrived quickly. They broke into the room. The floor was covered in water and the bathtub was full of chocolate and honey. "He seemed so nice and friendly. Who’d have thought he was a bathtub-singing nut?" said the clerk. The police said this was the third time that Wild had been arrested for this kind of behavior.

1.The man bought lots of honey and chocolate syrup to _______.

A. have a bath to make himself sweet

B. do some interesting tests

C. give people a surprise

D. make a sweet cake

2.What caused the clerk to call the police?

A. Wild bought honey and chocolate syrup.

B. Wild mixed the water with the things he bought.

C. Wild made too much noise and disturbed his neighbor.

D. Wild didn’t pay for the check.

3.We know from the passage that _________.

A. Wild didn’t pay for the honey and the chocolate syrup

B. the clerk didn’t know Wild had behaved like this before

C. Wild had been caught at least four times before

D. Wild walked to John-Johns to buy the honey

There is a well-known story about a farmer found an eagle(鹰) egg. The story reminds us of the importance of developing our full potential(潜力).

One day, a hardworking found an eagle’s egg lying on the ground of his farm. He was in a hurry he paid no attention to it and placed it together with all the chicken eggs. After several days, the egg hatched(孵化)and the little eagle into the world.

The eagle thought he was same as the other chickens, the eagle pecked(啄食)and dug for worms. He ran about and sometimes jumped around, flying a few in the air like the chickens. Over the years, the eagle grew old and tired. One day he saw a splendid bird overhead, and asked, “ is that?” “That’s the king of the -- the bald eagle,” replied a chicken. “The sky is her home. We’re chickens -- our home is the farm.”

And so the eagle lived and died a chicken, for that’s what he believed he was.

Are you an eagle that like a chicken? , many people have great talents but bring them to use. Actually, we make our talents take off by developing our character strengths. Suppose there was a young man who in the world. He asked questions about his environment, explored new neighborhoods where he lived, and soon he mentally mapped out the city he lived in. He used his curiosity to make the of his talents for spatial(空间的)intelligence.

When we use our character strengths, we will that we are eagles.

1.A. whose B. he C. which D. who

2.A. woman B. farmer C. lady D. worker

3.A. and B. because C. as D. but

4.A. carefully B. nervously C. carelessly D. slowly

5.A. come B. came C. comes D. coming

6.A. an B. a C. the D. /

7.A. but B. or C. and D. so

8.A. feet B. inches C. foot D. kilometers

9.A. fly B. flying C. flew D. flown

10.A. Where B. How C. Which D. Who

11.A. mountains B. sea C. forest D. sky

12.A. in B. over C. on D. about

13.A. after B. like C. before D. among

14.A. acts B. looks C. sounds D. thinks

15.A. Unfortunately B. Unbelievably C. Fortunately D. Interestingly

16.A. sometimes B. never C. regularly D. always

17.A. can B. could C. must D. might

18.A. was excited B. was surprised C. was terrified D. was interested

19.A. use B. effort C. best D. least

20.A. worry B. fear C. respect D. recognize

违法和不良信息举报电话:027-86699610 举报邮箱:58377363@163.com

精英家教网