摘要：How (1) the Earth? First, we (2) litter here and there. We should pick the rubbish up and put (3) in the rubbish bin. Second, we s

以下是六篇沪教版六年级上册英语Unit 12的完形填空理解专练，后面附有答案解析：

完形填空一

We live on the Earth. The green and brown parts are forests and land. The blue parts are oceans. The Earth (1) very clean and beautiful in the past, but now some parts of the Earth (2) dirty. Sometimes people throw rubbish (3) rivers and oceans. Sometimes people cut down too many trees. Smoke from cars and factories makes the air dirty. The Earth gets sick. So people should stop cutting down so many trees. People should plant (4) trees. People should stop throwing rubbish. People should stop using plastic bags. People should work together (5) keep the Earth clean and healthy.

(1) A. is B. was C. were

(2) A. are B. am C. is

(3) A. in B. into C. on

(4) A. more B. a C. any

(5) A. of B. for C. to

完形填空二

How (1) the Earth? First, we (2) litter here and there. We should pick the rubbish up and put (3) in the rubbish bin. Second, we shouldn’t use (4) plastic bags. Plastic is (5) for our Earth. Third, we should plant more trees. Trees can not only make our Earth more beautiful but also help keep the air (6).

(1) A. protect B. love C. to protect

(2) A. shouldn’t B. should C. could

(3) A. they B. us C. it

(4) A. too much B. too many C. much too

(5) A. good B. helpful C. bad

(6) A. to clean B. clean C. cleaning

完形填空三

Students in our school often do group projects. They see these projects as fun (1). Group work isn't (2), and it usually needs everyone to work together. For example, when a group of students makes a science poster, they (3) the work into small jobs. Each student in the group does their (4) thing. Some (5) pictures from books, and some write words about the science topic. Some (6) the poster colorful with crayons. One or two students (7) to make sure everything looks nice. The students must (8) each other. If one student doesn't finish their (9) work on time, the whole group has to wait. That makes everyone (10). So, working together is the key to a good project!

(1) A. games B. activities C. rules

(2) A. easy B. new C. big

(3) A. cut B. divide C. put

(4) A. different B. same C. old

(5) A. draw B. take C. find

(6) A. make B. let C. ask

(7) A. look B. check C. watch

(8) A. listen to B. talk about C. look for

(9) A. small B. own C. great

(10) A. happy B. sorry C. sad

完形填空四

The Earth is our home. We must take good care of it. But now, the Earth is in trouble. There are (1) many factories. They make a lot of waste gas and dirty water. The waste gas makes the air (2). The dirty water makes the rivers and lakes (3). We can't drink the water or swim in the rivers and lakes. There are also too many cars on the road. The cars also produce waste gas. We should do something to help the Earth. We can plant more trees. Trees can (4) the air clean. We can ride bikes or take buses instead of driving cars. We can also (5) waste paper and plastic bottles. Let's work together to make the Earth a better place.

(1) A. too B. so C. very

(2) A. clean B. dirty C. fresh

(3) A. clean B. dirty C. beautiful

(4) A. make B. let C. have

(5) A. throw B. collect C. buy

完形填空五

Our Earth is a beautiful planet. It has blue oceans, green forests and brown land. But human activities are changing the Earth. We are cutting down too many trees. As a result, there are fewer and fewer forests. Many animals are losing their (1). We are also using too much plastic. Plastic waste is everywhere. It is very (2) for the environment. We should try to reduce plastic use. We can use cloth bags instead of plastic bags. We should also save energy. Turn off the lights when we leave the room. Use less water. Let's do our part to (3) the Earth. If we all work together, we can make a difference and keep the Earth (4) for future generations.

(1) A. homes B. food C. friends

(2) A. good B. bad C. useful

(3) A. protect B. pollute C. clean

(4) A. dirty B. beautiful C. ugly

完形填空六

The Earth is like a big family. All the living things on the Earth are members of this family. We should get along well with each other. But some people don't understand this. They hunt wild animals for their fur or meat. This makes many wild animals (5) danger. We should stop this kind of behavior. We should also protect the plants. Plants are important because they can produce oxygen and make the air fresh. We can plant more plants in our gardens or in the parks. Let's work together to create a harmonious environment on the Earth.

(1) A. in B. on C. at

(2) A. and B. but C. or

(3) A. so B. because C. although

(4) A. to B. for C. with

(5) A. in B. out of C. on

答案解析

- 完形填空一：(1)B。根据in the past可知用一般过去时，主语the Earth是单数，所以用was。(2)A。some parts是复数，现在时用are。(3)B。throw rubbish into...“把垃圾扔进……”。(4)A。plant more trees“种更多的树”。(5)C。work together to do sth“一起努力做某事”。

- 完形填空二：(1)C。how to do sth“如何做某事”。(2)A。根据语境我们不应该到处乱扔垃圾。(3)C。it指代rubbish。(4)B。too many修饰可数名词复数plastic bags。(5)C。塑料对地球有害。(6)B。keep the air clean“保持空气清洁”。

- 完形填空三：(1)B。活动用activities。(2)A。小组作业不容易。(3)B。divide...into“把……分成”。(4)A。每个学生做不同的事。(5)C。从书中找图片用find。(6)A。make the poster colorful“使海报色彩丰富”。(7)B。检查用check。(8)A。学生要互相倾听。(9)B。one's own“某人自己的”。(10)C。一个人没完成任务大家会难过。

- 完形填空四：(1)A。too many“太多”。(2)B。废气使空气脏。(3)B。脏水使河流湖泊脏。(4)A。make the air clean“使空气清洁”。(5)B。collect waste paper“收集废纸”。

- 完形填空五：(1)A。动物失去它们的家。(2)B。塑料对环境有害。(3)A。保护地球用protect。(4)B。让地球保持美丽。

- 完形填空六：(1)A。in danger“处于危险中”。

来源：蒙古元素