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
Three Boys and a Dad
Brad closed the door slowly as Sue left home to visit her mother. Expecting a whole day to relax, he was thinking whether to read the newspaper or watch his favorite TV talk show on his first day off in months. “This will be like a walk in the park,” he’d told his wife. “I’ll look after the kids, and you can go and visit your mom.”
Things started well, but just after eight o’clock, his three little “good kids”—Mike, Randy, and Alex—came down the stairs in their night clothes and shouted “breakfast, daddy.” When food had not appeared within thirty seconds, Randy began using his spoon on Alex’s head as if it were a drum. Alex started to shout loudly in time to the beat(节拍). Mike chanted “Where’s my toast, where’s my toast” in the background. Brad realized his newspaper would have to wait for a few seconds.
Life became worse after breakfast. Mike wore Randy’s underwear on his head. Randy locked himself in the bathroom, while Alex shouted again because he was going to wet his pants. Nobody could find clean socks, although they were before their very eyes. Someone named “Not Me” had spilled a whole glass of orange juice into the basket of clean clothes. Brad knew the talk show had already started.
By ten o’clock, things were out of control. Alex was wondering why the fish in the jar refused his bread and butter. Mike was trying to show off his talent by decorating the kitchen wall with his colour pencils. Randy, thankfully, appeared to be reading quietly in the family room,but closer examination showed that he was eating apple jam straight from the bottle with his hands. Brad realised that the talk show was over and reading would be impossible.
At exactly 11:17, Brad called the daycare centre (日托所).“I suddenly have to go into work and my wife’s away. Can I bring the boys over in a few minutes?” The answer was obviously “yes” because Brad was smiling.
1.When his wife left home. Brad expected to .
A. go out for a walk in the park
B. watch TV talk show with his children
C. enjoy his first day off work
D. read the newspaper to his children
2.Which of the following did Randy do?
A. Drawing on the wall B. Eating apple jam
C. Feeding the fish. D. Reading in a room
3.Why did Brad ask the daycare centre for help?
A. Because he wanted to clean up his house.
B. Because he suddenly had to go to his office
C. Because he found it hard to manage his boys home.
D. Because he had to take his wife back
The Healthy Habits Survey(调查)shows that only about one third of American seniors have correct habits. Here are some findings and expert advice.
1. How many times did you brush your teeth yesterday?
Finding:A full 33% of seniors brush their teeth only once a day.
Step:Remove the 300 types of bacteria in your mouth each morning with a battery-operated toothbrush. Brush gently for 2 minutes, at least twice a day.
2. How many times did you wash your hands or bathe yesterday?
Finding:Seniors, on average, bathe fewer than 3 days a week. And nearly 30%wash their hands only 4 times a day-half of the number doctors recommend.
Step:We touch our faces around 3,000 times a day-often inviting germs(病菌)to enter our mouth, nose, and eyes. Use toilet paper to avoid touching the door handle. And, most important, wash your hands often with hot running water and soap for 20 seconds.
3. How often do you think about fighting germs?
Finding:Seniors are not fighting germs as well as they should.
Step:Be aware of germs. Do you know it is not your toilet but your kitchen sponge(海绵)that can carry more germs than anything else? To kill these germs, keep your sponge in the microwave for 10 seconds.
1.What is found out American seniors?
A. Most of them have good habits.
B. Nearly 30% of them bathe three days a week .
C. All of them are fighting germs better than expected .
D. About one third of them brush their teeth only once a day
2.Which of the following is true according to the text ?
A. We should keep from touching our faces.
B. There are less than 300 types of bacteria in the mouth .
C. A kitchen sponge can carry more germs than a toilet .
D. We should wash our hands before touching a door handle .
3.The text probably comes from .
A. a guide book
B. a popular magazine
C. a book review
D. an official document
根据提示,请以以下内容,写一篇短文向一位新生Mary介绍你们学校的规章制度。内容包括:
1. 上课不能迟到。
2. 教室要保持(keep)干净和安静。
3. 见到老师要问好。(greet)
4. 不允许在教室里吃东西。
5. 不许在课堂上听音乐,玩游戏。
6. 不要损害花草树木。(pick flowers; climb trees)
短文改错
Dear Mary,
I receive your E-mail just now. Don’t worry about me. I’m getting on well with my research work in the lab. But to my greatly surprise you say you will give up learn English. The reason is because you have not done well in it recently and you have lost interests. I’m afraid I couldn’t agree with you. I know it is difficulty to learn English, and English is widely used in the world today. It will be important tool in our future work. Beside, it is becoming more and more important in our daily life. If you study hard, you will be succeed. Do remember that where there is a will, there is a way. I’ m looking forward to hearing good news from you.
Yours
Li Hua
One morning Wangpeng sat in his empty restaurant feeling very frustrated and 1. (know) why there were no customers in his restaurant. Suddenly he saw his friend 2. (hurry) by. To figure out why Li Chang wasn’t coming to eat in his restaurant just 3. he always did, he followed him to a small new restaurant. 4. (curious) drove him inside. There Wangpeng met Yonghui, the owner of the new restaurant, whose diet was mainly slimming food to help people lose weight and be fit in a short time. After his research, Wangpeng discovered the weaknesses and 5. (strong) of the diets both in his and Yonghui’s restaurants. 6. (drive) back home, Wangpeng rewrote his sign. The competition between them was 7. .
A few weeks later, Wangpeng and Yonghui met again in his restaurant. Instead of 8.(quarrel) with each other, they combined their ideas and provided a 9. (balance) menu with food full of energy and fibre. Finally they got 10. (marry) and lived happily.