Today there are 6.4 billion people on the earth. By the year 2050, there may be 12.5 billion. There are a lot of people to feed. We need more and more food.

One way to produce more food is growing strong?er plants. For thousands of years, farmers have made plants better. Every season, they pick the best plants for the next season. But it works very slowly. Since 1983, scientists have been able to change plants more quickly by changing their genetic(遗传的) material. Foods from plants grown in this way are called genetically modified(改变的) foods, or GM foods.

By changing the genetic material of a plant, it is possible to make new plants. They make plants which are strong against plant diseases. They can also help prevent human diseases; a kind of rice is being prepared, for example, which stops people becoming blind.

Rich countries produce GM foods because they are easy to grow and bring in more money. Poor countries are interested in them because they help produce more food.

GM plants are not natural. No one knows how good or bad they are. There are strong feelings against them, because they are unnatural. They may feed people, then hurt them or their children later. But both rich and poor countries are interested in their use, and they are not going to go away. In 2050, we may think differently about them.

1.GM foods are made by________.

A. farmers B. workers

C. scientists D. plants

2.What are the good things about GM foods?

A. They make plants strong against diseases.

B. They are unnatural.

C. They can help prevent human diseases.

D. Both A and C.

3.GM foods________.

A. are a quick way to produce food

B. are grown in the wild

C. .are safe

D. are grown only in rich countries

4.Why do some people not like GM foods?

A. They are not useful. B. They are not helpful.

C. They are not natural. D. They are not cheap.

5.From the passage we know that ________.

A. GM foods will disappear one day in the future

B. GM foods will not disappear in the future

C. people will not be interested in GM foods

D. people will have to stop using GM foods

通读下面短文,掌握其大意,然后在各小题所给的四个选项中,选出一个最佳答案。

Boys and girls, this summer vacation is the time for you to take your mind off homework and prepare yourself for future life. The following is some advice on ______ to make your vacation meaningful and colorful.

Take exercise. Regular exercise, much health. You ______ hard most of the time so far. Therefore, you need to join in outdoor activities, which can bring your whole body into action. You can benefit from different forms of exercise ______ swimming, jogging and mountain climbing.

Learn some basic life skills. One day, you will live alone. As a result, you can't ______ your family any longer. In order to deal with your ______ matters in your own life, you should learn cooking, washing and other practical (实用的) skills.

Go for a journey. Travel to places of interest. In this way, you can find the culture there different from ______ of your hometown. Beautiful scenery can ______ make you relaxed. Imagine that you are lying on the warm beach in bright sunshine, with light sea wind gently blowing. Isn't it enjoyable and comfortable?

Enjoy family time. Home is the place in which you can rest, receive love and care from relations. Don't always sit in front of a computer alone. Instead, the whole family should spend ______ watching a movie on the sofa together. Besides, it's great fun for family members to gather around the table, ______ sports and enjoy the relaxing times.

If you follow the advice above, you will achieve health, independence (独立), peace of mind and feelings between family members. Today is the beginning of a new life. Your summer vacation must be full of ______ and success. Wish you a wonderful time!

1.A. whether B. how C. when D. what

2.A. have worked B. worked C. will work D. works

3.A. instead of B. because of C. such as D. rather than

4.A. depend on B. give up C. hear from D. look after

5.A. public B. negative C. personal D. Happy

6.A. it B. that C. one D. what

7.A. also B. either C. too D. as

8.A. some times B. some time C. sometimes D. some

9.A. discussed B. to discuss C. discuss D. discussing

10.A. sadness B. joy C. worry D. happy

Jack is a twenty-year-old young man. Two years ago, when he finished high school, he found a job in a shop. Usually he works until ten o’clock in the evening. He is very tired when he gets home every day. After a quick dinner, he goes to bed quietly and soon falls asleep. His grandma who lives downstairs is satisfied(满意的) with him.

One day, on his way home, he met Mary. They were both happy. He asked the girl to his house, she agreed happily. He bought some fruit and drinks for her. And they talked about their school, teachers, classmates and their future. They talked for a long time.

“Have a look at your watch, please,” said the girl, “What time is it now?”

“Sorry, something is wrong with my watch,” said Jack. “Where’s yours?”

“I left it at home.”

Jack thought for a moment and found a way. He began to stamp his left foot on the floor, “Bang! Bang! Bang!”

The sound woke his grandma up. The old woman shouted downstairs, “It’s twelve o’clock in the night, Jack. Why are you still jumping upstairs?”

1.The old woman is satisfied with Jack because ________.

A. he’s her grandson

B. he’s clever

C. he can keep quiet

D. he gets home on time

2.From the story, we can know that Mary is Jack’s ________.

A. classmate B. colleague(同事)

C. aunt D. wife

3.The underlined word “stamp” in the story means “________” in Chinese.

A. 盖印 B. 跺

C. 贴邮票 D. 邮票

4.Jack stamped his foot on the floor in order ________.

A. to wake his grandma up

B. to make his grandma angry

C. that his grandma was going to tell him the time

D. that his grandma was going to buy him a watch

Vincent got up at half past six in the morning.He hurriedly put on his clothes and finished the ______ prepared by Grandma.His grandparents were the only two people ______ with him.As soon as he waved goodbye to them,Vincent ______ out to the small car park(停车场).Dad's car was already there.

“Good morning,Dad.You are earlier than I expected,” said Vincent.And he got into the car happily.

“I ______ you,” Dad smiled and drove off.

“Me,too.______ can I live with Mum and you again?” asked Vincent.

“I've told you hundreds of times.Mum will be back in two months.We will live together again then.Mum always loves her ______ and she wants to take the chance to meet more clients(客户).” Dad explained,“And her boss told her that she might become the manager.Are you ______?”

“Not at all.Is work more important than me?” asked Vincent.

“No,of course not.You are the most important to Mum and Dad,______ we have to work.You will understand us when you grow up,” said Dad as he ______ at the school gate.

Vincent got out of the ______.Dad drove off,going back to his office.

1.A. breakfast B. lunch C. supper D. dinner

2.A. working B. climbing C. living D. separating

3.A. kept B. rushed C. pointed D. found

4.A. beat B. ask C. hate D. miss

5.A. Why B. Who C. When D. Where

6.A. housework B. garden C. job D. trousers

7.A. happy B. healthy C. honest D. strict

8.A. or B. because C. after D. but

9.A. moved B. stopped C. met D. shouted

10.A. house B. office C. school D. car

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