1、1Unit 13 Were trying to save the earth!Unit 13 第 4课时（Section B 2c-Self Check）测试卷测试时间：20 分钟I. 阅读理解All living things need energy to live and grow. This energy comes first from the sun. Plants use water and sunlight to make their own food. Animals can not make their own food, and they eat plants. Other
2、 animals then eat the plant eaters.A food chain shows what eats what. It might show that zebras eat grass and then lions eat zebras.Lions also eat other animals. Zebras eat other kinds of plants. So it takes more than one food chain to show how lions and zebras get their energy.A food web shows how
3、food chains work together. From it we can see how energy moves from plants to animals.Plants and animals that live in hot, dry deserts depend on water as well as food. Creosote bushes have small leaves that hold water. Their seeds provide food and water for kangaroo rats. Kangaroo rats dont need to
4、drink water. They get all the water they need from the plants they eat. Kangaroo rats keep cool by coming out only at night to look for food. Ringtail cats also come out only at night. Ringtail cats hunt and eat kangaroo rats. Coyotes eat both the kangaroo rats and the ringtail cats.2Nothing is wast
5、ed in a food wed. Vultures eat dead animals. Vultures are scavengers. Scavengers do not hunt and kill other animals to get food. They eat animals that are already dead. When a ringtail cat or a coyote dies, it makes a meal for the vultures. Scavengers do an important job in keeping the environment c
6、lean.1. Where does the energy that living things need first come from?A. Animals. B. Plants. C. The sun. D. Plant eaters.2. Why do ringtail cats come out only at night?A. Because they are afraid of coyotes.B. Because they are shy animals.C. Because it is very hot in the daytime.D. Because they can e
7、at kangaroo rats.3. What kind of animal can be placed in the empty box of the picture?A. Kangaroo. B. Vulture. C. Cat. D. Zebra.4. Which of the following is NOT TRUE according to the passage?A. Lions eat different kinds of animals.B. Plants are on the top of the food chain.C. Scavengers can keep the
8、 environment clean.D. Some animals get water from the plants they eat.5. Whats the best title of the passage?A. Web of life B. Things that we eatC. Food in the desert D. The place where food is fromII.书面表达荣光学校九年级（2）班就“环境问题”召开了一次班会，并且以“Our Environment in Ten Years: for Better or Worse? ”为题进行了一次讨论。许多同
9、学对未来表示乐观，但也有些同学对未来有些担心。请根据表格中的内容提示，用英文写一篇短文。1.越来越多的人将成为环保主义者。乐观者的观点2.政府将采取更多的措施改善环境。1.大量的树木仍将被砍伐。担心者的观点2.私家车将越来越多。你的观点及你的打算 学生自拟 (至少两点)提示：1.短文中不得出现真实的人名和地名。2.短文中应包含至少 4个要点。3.书写工整，语句通顺、连贯，词数不少于 80。注意：文章开头已给出，不计入总词数。参考词汇：optimistic adj.乐观的 government n.政府 take measures to 采取措施 private adj.私有的Our Envir
10、onment in Ten Years: for Better or Worse? Many students are optimistic about our environment in ten years._3参考答案I. 阅读理解1. C 细节理解题。根据文章第一段第二句 This energy comes first from the sun.，可知生物最初需要的能量来源于太阳。故选 C。2. D 细节理解题。根据文章第五段中的 “Ringtail cats also come out only at night. Ringtail cats hunt and eat kangaro
11、o rats.”，可知选 D。3. B 细节理解题。根据文章最后一段中的“When a ringtail cat or a coyote dies, it makes a meal for the vultures.”，可知选 B。4. B 推理判断题。根据第一段中的“Plants use water and sunlight to make their own food. Animals can not make their own food, and they eat plants.”可知植物不处于食物链的顶端，故选 B。5. A 主旨大意题。根据本文内容可知本文介绍了自然界中食物链的构建
12、和循环，故答案为 A。II.书面表达答案Our Environment in Ten Years: for Better or Worse? Many students are optimistic about our environment in ten years. In fact, they think that the world will be a better place than it is now. More and more people are becoming volunteers to protect the environment. The government wi
13、ll take more measures to improve the environment.However, other students are worried about the future. A large number of trees will be cut down. Private cars will be more and more. They say the world will become more crowdedBut in my opinion, I think we should plant more trees and pick up litter around us. We should work together to protect our homes.
