It is a cold and dry winter morning. When you wake up, you feel that your throat hurts. You begin to sneeze and later you may cough. You must have a cold! Wait a moment. Could it just be a common cold or the flu (流感) that’s been going around?

A cold gives you a runny nose and cough. But it’s usually easy to deal with. Some take medicine while others drink herbal tea or chicken soup. Usually you feel better after a week.

On the other hand, the flu can be much more dangerous. It usually gives you fever. Sometimes it can cause death. According to an American magazine, the worst flu killed about 50 million people from 1918 to 1919.

Don’t worry. If you get a flu vaccine (疫苗), it can stop you from getting the virus (病毒). Flu vaccines work by giving the body a small amount of flu viruses. This causes your body to develop antibodies (抗体). So next time you get the flu, the antibodies should help you.

The flu virus changes every few years. Therefore, there are so many types of flu, such as H1N1 and H5N1. The antibodies for one type of flu can’t help us against all types of flu. That’s why we need to get the vaccine every year.

However, good health habits may also help stop you developing a cold or flu. Washing your hands often helps stop you from getting viruses. It is also important to get regular exercise and eat healthy food. All these can help you strengthen your immune system (增强免疫系统).

1.If you have a common cold, usually you’ll feel better after ________.

A. a week        B. two weeks 

C. ten days        D. twenty days

2.According to the passage, which is TRUE of the flu?

A. It first happened in 1919.

B. It usually doesn’t give you fever.

C. It is easy to deal with.

D. It can kill people sometimes.

3.If you get a flu vaccine, ________.

A. it can’t stop you from getting the flu virus    

B. it won’t cause your body to develop antibodies

C. your body will develop antibodies    

D. your body will get a large amount of flu viruses

4.We need to get a flu vaccine every year because ________.

A. we probably have a cold in winter    

B. the flu virus changes every few years

C. the flu is very dangerous    

D. you don’t need to take any medicine after that

5.The following ways can help stop the flu EXCEPT ________.

A. staying indoors    B. getting regular exercise

C. eating healthy food     D. washing our hands often

What will the car be like in the future? Maybe we can sit in a car that can drive itself.

About 40 years ago, scientists from the United States started to develop self-driving cars (无人驾驶汽车). The most famous recent one was made by Google in 2009. There are cameras and radars (雷达) on the top of the car. They allow the computer in the car to draw a 3D map of the environment. Chinese scientists have also successfully developed a self-driving car. The car made a trip from Changsha to Wuhan.

Is a self-driving car safe? A recent study shows that robots make safer drivers than humans. If only 10% of cars on the street are self-driving, they will save 1,000 lives (生命) every year. If 90% of vehicles (交通工具) are self-driving, 21,700 lives will be saved a year. However, a self-driving car is expensive and each costs about $100,000. So it is impossible to be very popular in the near future.

根据短文内容，判断下列句子正误。正确的用“A”表示，不正确的用“B”表示。

1.American scientists started to develop self-driving cars in 2009.

2.Cameras and computers are on the top of the self-driving car by Google.

3.In China, scientists have successfully developed a self-driving car.

4.The more self-driving cars there are on the street, the fewer traffic deaths there will be.

5.The self-driving cars will be very popular in the near future.

— Dad, can you tell me ________ to the amusement park?

— The day after tomorrow.

A. when we are going     B. when we went    

C. when are we going     D. when did we go

— Your pencil case looks really beautiful.

— ________. But in fact, Gina’s looks better than mine.

A. Of course           B. Not at all    

C. I’m afraid not     D. Thank you

________ delicious these beef noodles are!

A. What       B. How   

C. What a     D. How a

After Mandela was free (自由的) in 1990, he chose to shake hands with the people ________ wanted to kill him.

A. whose     B. which     C. /     D. who

— I’m sorry, sir. I can’t finish the work on time.

— Never mind. ________, the work is quite difficult.

A. At least    B. For instance    

C. After all     D. First of all

When you are swimming, ________ your ears. You can use earplugs (耳塞) to stop water getting into your ears.

A. take after     B. take part in    

C. take off       D. take care of

Turn off the water while you ________ your teeth or washing your hands.

A. were brushing     B. brush    

C. are brushing       D. brushed

It ________ about eight minutes for sunlight (阳光) to travel from the sun to the earth.

A. takes     B. spends    

C. costs     D. pays