阅读下面短文，然后从1-15各题所给的A、B、C和D项中，选出最佳选项。

Artificial intelligence or AI in short, is the science to make computers and machines think and work like humans.

So far, AI scientists and engineers _______ a lot of cool technologies. AI is rapidly catching up _______ the human ability _______ faces. As a result, facial recognition _______ a lot in the world. Chinese police use this technology to identify criminal. Once they caught a criminal when he attended _______ concert. _______ also checks the ID of ride-hailing (网约车) drivers and lets people pay for things with a smile.

AI is also used in self-driving cars _______ are believed to be the future of driving. Most drivers may wave or nod at passers-by to let them cross the street, _______ self-driving cars don’t have this ability. Carmakers are testing a light signal system _______ them “speak” to humans. The system can show ________ self-driving cars will do. For example, if a driverless car is yielding(让路), it will flash two white lights side to side. A rapidly flashing light tells passers-by ________ the car is about to speed up.

Service Robots also show you how ________ AI is. ________ that you come back home from school and your robot housekeeper is waiting for you at the door. After dinner, he teaches you to play the piano, just like a real music teacher. Such thoughts soon ________ in the real world. In the future, more and more service robots will become good home helpers.

AI is ________ powerful that it can help human beings and even replace us in many jobs.

It is a cold and dry winter morning. When you _______, you suddenly feel that your throat hurts. You begin to sneeze and later you may cough. You must have a cold! Wait a second. Could it just be a _______cold or the flu that's been going around?

A cold gives you a runny nose and cough. But it's usually easy to_______with. Some take medicine such as aspirin (阿司匹林)_______others try home treatments like herbal tea or chicken soup. Usually you feel better after a week.

The flu on the other hand can be much more_______. It usually gives you fever. Sometimes it can be deadly. The worst flu, the so-called Spanish Flu of 1918 to 1919, killed about 50 million people, according to The Atlantic.

Don't worry. Getting a flu vaccine (流感疫苗) can_______you from the virus. Flu vaccines work by giving the body a small amount of flu viruses. This causes our body to develop antibodies （抗体). _______next time you get the flu, the antibodies can help protect you.

Unfortunately, the flu virus_______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 protect us against all types of flu. That's_______we need to get the vaccine every year.

However, good health________may also help to prevent a cold or flu. Washing your hands often helps protect you from viruses. Getting regular exercise and eating healthy food is also important. All these can help you strengthen your immune system (免疫系统).

Here is a story: A man sees a butterfly. The butterfly tries to get out of its chrysalis (蛹). Feeling sorry for it, the man decides to help. He cuts the chrysalis and the butterfly comes out easily. Surprisingly enough, the butterfly is unable to fly. If the butterfly doesn’t struggle to leave the chrysalis, it can’t fly! The struggle develops the energy in the butterfly which makes it fly. Similarly the challenges of life bring out the best in young people and make the fly.

When people are young, meeting and overcoming challenges will make them strong and ready to face life. When we look at successful people, we see that the most successful of them are people who have had to struggle. One famous businessman, who now owns many big supermarkets, used to carry clothes on his back and sell them from door to door when he was young. Another successful man is Dennis. His father died when he was only twenty. His father’s death forced him to mature fast. He had to bring up a family of nine people. He took up the challenges and overcame them. Today his brothers and sisters are leading successful lives.

Sometimes challenges do not appear to us because we keep away from them. So some parents and teachers actively encourage young people to face challenges. They might organize some activities for young people which provide them with challenges, like rock-climbing, camping, volunteer work and so on. However, just passing exams will not prepare a person for life. We must meet and overcome challenges. The young people of today will become the leaders of tomorrow. For countries to continue to become successful, it is important that the young people learn to meet challenges and overcome them.

The Qinghai-Tibet plateau is a mountainous area in western China that sits about 4,000 meters above sea level. This beautiful natural environment is made up of grassy lands, lakes and glaciers (冰川). Very few people live in the area, but it is home to many animals, including the endangered Tibetan antelope (藏羚羊).

Thousands of Tibetan antelopes once lived in this area, but their populations dropped in the 1980s and 1990s. This was in large part the result of poaching (偷猎). Poachers often killed Tibetan antelopes for their soft and highly prized wool.

Over recent decades, however, much has been done to protect these animals. The government has made it much more difficult for poachers to operate in the area by introducing strict laws. And in the spring, when thousands of Tibetan antelopes make a long journey to Hoh Xil, government workers follow the antelopes, making sure that they are protected from poachers and from other wild animals.

The government has also taken steps to slow down tourism in the area, since tourists often disturb the natural habits of animals.

All of this work has had good results. Tibetan antelopes are enjoying much better conditions than before, and their populations are rising once again. Today there are more than 60,000 Tibetan antelopes in the area—and this number continues to grow every year.

Why does the chicken cross the road?     41    

That’s an old joke in the west, but it came to my mind again when I saw people crossing the road at the intersection of Guangzhou Road and Zhongshan Road in Guangzhou.

When the traffic light was red, a group of people were waiting for the light to change.     42     Soon others followed him at the crossing and more people did the same. Just like chickens, they didn’t mind the honking horns and kept crossing the road in a mess.

Every year several thousand people are either killed or hurt on the roads in Guangzhou.     43     Jaywalking is very common in Shanghai. It seems that jaywalkers are not afraid of the danger to themselves.

    44     So we should obey them, and have good road-crossing habits. When someone starts to jaywalk, we should stop him, and never follow him.     45    

56. 最近，你班就“你的理想职业”展开了一次调查。请根据你们小组的情况写一篇英语短文，向英语校刊投稿。

2. 不得透露学校、姓名等任何个人信息，否则不予评分。

Recently we did a survey in our class in order to learn about students’ ideal jobs. Here’s a report about my group members’ ideas. ____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Hopefully everyone can realize their dreams in the future.