All living things on the earth need other living things to live. Nothing lives alone. Most animals must live in a group, and even a plant grows close together with others of the same kind. Sometimes one living thing kills another, one eats and the other is eaten. Each kind of life eats another kind of life in order to live, and together they form a food chain (食物链). Some food chains are simple, while others are not. But all food chains begin with the sun, and all food chains become broken up if one of the links disappears.

All life needs sunlight to live on. But only plants can use sunlight directly. Plants are "factories". They make food from sunlight, water and things in the soil and air.

Plants feed all other living things. Animals can only use the sun's energy (能量) after it has been changed into food by plants. Some animals' feed directly on plants, others eat smaller animals.

What about human beings(人类)? We are members of many food chains. We eat wheat, rice, vegetables, fruits and so on. We also eat meat and drink milk. But men often break up the food chains. They kill wild animals. They also make rivers, lakes and seas dirty. When these rivers, lakes and seas are polluted, the fish in them can not be eaten. If men eat the fish, they will get strange diseases. Each form of life is linked to all others. Breaking the links puts all life in danger.

1.How does every living thing on the earth live?

A. Each plant can live alone.

B. Each animal can live alone.

C. If living things want to live, they must kill each other.

D. Every living thing on the earth cannot live without others.

2.Which living things can use the sun's energy directly?

A. Animals. B. Plants.

C. Both animals and plants. D. All living things

3.Plants make food from____________.

A. sunlight, water and things in the soil and air

B. water, sunlight and things in the soil

C. water and things in the soil and air

D. water and things in the soil

4.Who often break up the food chains?

A. Human beings. B. Animals.

C. Plants and animals. D. Men and wild animals.

5.Which of the following do you think is the best title for this passage?

A. Animals B. Plants C. Food Chains D. Living Things

1.D 2.B 3.A 4.A 5.C 【解析】本文主要介绍了地球上的食物链。植物制作食物,动物吃植物。我们人类也吃植物和动物,但是也会打断食物链。每种生物都需要依靠其他生物去生活,如果食物链断了,可能导致所有的生物处于危险中。 1.D 细节理解题。根据All living things on the earth need other living thi...

The summer vacation is the best time for students. They can go outdoors and have fun. They can go to big cities to , or go to the countryside to enjoy the beauty of . Peter is an American middle school student and he loves very much. He always travels in his country. This summer vacation he wants to do . He is interested in Chinese history. he is flying to Beijing and Xi’an for the summer vacation. He is leaving on July 12th and New York on the last day of the month. He plans a fantastic vacation. During the , he is visiting places of interest and going shopping. At night, he is to enjoy the night views. He is sure he will have a time.

1.A. watch TV B. exercising C. go sightseeing D. go fishing

2.A. buildings B. city C. farm D. nature

3.A. travelling B. shopping C. fishing D. hiking

4.A. something difference B. different something C. something different D. difference something

5.A. Because B. So C. But D. Although

6.A. getting back to B. get back to C. getting back D. gets back to

7.A. having B. to have C. to having D. had

8.A. weekend B. week C. night D. day

9.A. take a walk B. taking walks C. takes a walk D. take walks

10.A. great B. well C. terrible D. boring

1.C 2.D 3.A 4.C 5.B 6.A 7.B 8.D 9.B 10.A 【解析】 试题分析:本文大意:暑假是学生们最好的时间,他们可以去户外玩,也可以去大城市观光或去乡村接近大自然。皮特是一名美国中学生,他计划暑假去中国游行,七月十二日出生,当月最后一天返回纽约。白天去参观景点和购物,晚上散步欣赏夜景。他相信他一定会过的很...

I'm a school girl. My brother and I are twins. We are both at school. We like school. My parents are both teachers. They work hard. My brother and I study at No. I Middle School. There are twenty-five boys and eighteen girls in our class.

We go to school from Monday to Friday. We have no classes on Saturdays and Sundays. We usually get up at six o'clock, and have breakfast at half past six. We come to school at seven o'clock. Classes begin at eight. We have four lessons in the morning and two in the afternoon. We have lunch at fifteen past twelve. At three fifty we have sports.

We study Chinese, Maths, English, Geography, Physics, History, Politics and other lessons. We like Chinese. We like English, too. Some of us are good at it. We go home at five o'clock. We have supper at six o'clock. We do our homework at seven every evening and go to bed at half past nine, but sometimes we go to sleep at about ten.

We work hard. We study for the people.

1.My brother is _______ and I am_______.

A. a worker; a student B. a student; a worker '

C. a student; a teacher D. a student; a student

2.We have _______ at fifteen past twelve.

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

3.We do our homework at _______ every evening.

A. nine B. seven C. school D. six

4.There are _______ boys and _______ girls in our class.

A. twenty-five; twenty B. some; any

C. twenty-five; eighteen D. many; much

5.Do they often have sports in the morning or in the afternoon?

A. Yes, they do. B. No, we don't. C. In the morning. D. In the afternoon.

1.D 2.B 3.B 4.C 5.D 【解析】本文作者介绍了自己的家庭和日常生活。我是个女学生。我哥哥和我是双胞胎。我们都在上学。我们喜欢学校。我父母都是教师。他们努力工作。我哥哥和我在第一中学读书。我们班有二十五个男孩和十八个女孩。我们从星期一到星期五上学。星期六和星期天我们不上课。我们通常六点起床,六点半吃早饭。我们七点来学校。八点开始上课。我们上午有四节课,下...

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