摘要：A 解析：“try one’s best”与“do one’s best”同义，均表示“尽某人最大努力”，为固定搭配。

沈阳小学牛津英语六年级上册第七单元专项练习（40道选择填空）附参考答案解析

单项选择题

1. We should try our best to protect the environment. The underlined phrase "try our best" means ______.

A. do our best B. do well C. work hard D. try quickly

2. There ______ a lot of rubbish in the river last year, but now it’s clean.

A. is B. was C. are D. were

3. We can ______ paper to make new books. It’s a good way to save resources.

A. reuse B. throw C. waste D. burn

4. —How can we reduce air pollution?

—We should ______ driving cars and ride bikes more often.

A. keep B. stop C. practice D. enjoy

5. The students are talking about ______ to protect wild animals.

A. what B. how C. where D. when

6. Don’t forget ______ off the lights when you leave the classroom. It saves electricity.

A. turn B. turning C. to turn D. turned

7. There is not enough ______ on Earth. We should save water every day.

A. air B. water C. paper D. oil

8. We should use cloth bags instead of plastic bags because plastic bags ______ the environment.

A. help B. protect C. pollute D. save

9. My mother often tells me ______ too much time playing computer games. It’s bad for eyes.

A. not to spend B. to not spend C. don’t spend D. not spend

10. —What should we do to save energy?

—We can ______ the windows and doors in winter to keep warm.

A. open B. close C. clean D. break

11. Many trees ______ every year to make paper. We need to plant more trees.

A. cut down B. are cut down C. cut up D. are cut up

12. We can collect rainwater ______ water the flowers in the garden.

A. to B. for C. with D. by

13. It’s important ______ us to learn about environmental protection.

A. for B. of C. with D. to

14. —Why do we need to protect animals?

—Because some of them are in ______ of disappearing.

A. danger B. safe C. need D. trouble

15. We shouldn’t ______ dirty water into the river. It will make fish die.

A. pour B. drink C. save D. carry

16. My father usually goes to work by bus ______ by car. He wants to reduce pollution.

A. instead B. instead of C. because of D. thanks to

17. If we ______ too many trees, there will be more sandstorms.

A. plant B. will plant C. cut D. will cut

18. There are many ways ______ energy in our daily life.

A. save B. saving C. to save D. saved

19. —______ can we reuse things?

—We can reuse glass bottles to make vases.

A. What B. How C. Where D. Who

20. We should buy products ______ less packaging to reduce waste.

A. with B. without C. for D. about

21. The old newspaper can ______ to make paper cups. Don’t throw them away.

A. use B. be used C. reuse D. be reused

22. —Let’s go to the park on foot instead of by bus.

—______ It’s good for our health and the environment.

A. That’s a pity. B. You’re welcome. C. Good idea! D. Never mind.

23. We must stop ______ plastic bags. They are harmful to the Earth.

A. use B. using C. to use D. used

24. The government is trying to ______ people to protect the environment.

A. ask B. let C. make D. have

25. There ______ more and more green areas in our city if we work hard.

A. will be B. is C. are D. was

26. We can ______ old clothes to children in poor areas. It’s a kind way to reuse them.

A. give away B. throw away C. put away D. take away

27. —Do you know how to save electricity?

—Yes. We should ______ the TV when no one is watching it.

A. turn on B. turn off C. turn up D. turn down

28. It’s our duty ______ the Earth clean and beautiful.

A. keep B. keeping C. to keep D. kept

29. We shouldn’t waste food because many people in the world don’t have ______ to eat.

A. enough food B. food enough C. enough foods D. foods enough

30. Many factories have stopped ______ dirty water into the river. Now the river is clear.

A. pour B. pouring C. to pour D. poured

31. We can use solar energy (太阳能) ______ electricity. It’s a clean energy.

A. make B. makes C. to make D. making

32. —What’s the most important thing we can do for the environment?

—______ more trees, I think.

A. Plant B. Planting C. To plant D. Planted

33. If everyone ______ a little effort, the environment will be better.

A. make B. makes C. will make D. made

34. We should avoid ______ plastic bottles everywhere. They are hard to break down.

A. throw B. throwing C. to throw D. thrown

35. There is ______ “h” and ______ “u” in the word “hour”.

A. a; an B. an; a C. a; a D. an; an

36. My sister often helps me ______ ways to reuse old things.

A. think of B. think about C. think over D. think out

37. We need to protect the animals ______ they are our friends.

A. so B. because C. but D. and

38. —Should we use disposable chopsticks (一次性筷子)?

—No, we shouldn’t. They ______ too many trees.

A. waste B. save C. protect D. help

39. We can ______ a shopping list before going shopping to avoid buying unnecessary things.

A. make B. do C. have D. get

40. The teacher told us that the Earth ______ around the Sun.

A. go B. goes C. went D. will go

参考答案及解析

1. A 解析：“try one’s best”与“do one’s best”同义，均表示“尽某人最大努力”，为固定搭配。

2. B 解析：根据“last year”可知用一般过去时，“rubbish”是不可数名词，be动词用was。

3. A 解析：reuse（重复使用）符合“制作新书、节约资源”的语境；throw（扔）、waste（浪费）、burn（燃烧）均不符合题意。

4. B 解析：reduce air pollution（减少空气污染）需“停止开车、多骑自行车”，stop doing sth. 表示“停止做某事”，符合语境。

5. B 解析：句意“学生们在讨论如何保护野生动物”，how表示“如何、怎样”，引导方式状语。

6. C 解析：forget to do sth. 表示“忘记要做某事”（未做）；forget doing sth. 表示“忘记做过某事”（已做），此处“离开教室关灯”是未做的事，用to turn。

7. B 解析：由“save water every day”可知此处指“地球上没有足够的水”，故选water。

8. C 解析：塑料袋会“污染”环境，pollute（污染）符合题意；help（帮助）、protect（保护）、save（节约）均相反。

9. A 解析：tell sb. not to do sth. 表示“告诉某人不要做某事”，为固定句型，否定词not要放在to前。

10. B 解析：冬天“关上”门窗保暖可节约能源，close（关闭）符合题意。

11. B 解析：trees与cut down（砍伐）是被动关系，every year表示一般现在时，用一般现在时的被动语态are cut down。

12. A 解析：collect rainwater的目的是water the flowers，用不定式to表示目的。

13. A 解析：It’s important for sb. to do sth. 表示“对某人来说做某事很重要”，固定句型，for后接人。

14. A 解析：in danger of 表示“处于……的危险中”，为固定短语，符合“一些动物有消失的危险”的语境。

15. A 解析：pour...into... 表示“把……倒入……”，句意“不要把脏水倒入河里”，符合题意。

16. B 解析：instead of 表示“代替、而不是”，后接名词或动名词；instead是副词，不能接宾语，此处后接by car，用instead of。

17. C 解析：if引导的条件状语从句，主句用一般将来时，从句用一般现在时，结合句意“如果我们砍太多树，会有更多沙尘暴”，用cut（砍伐）。

18. C 解析：ways to do sth. 表示“做某事的方法”，固定搭配，用不定式to save作后置定语。

19. B 解析：由答语“我们可以重复使用玻璃瓶做花瓶”可知问句询问“如何重复使用东西”，用how。

20. A 解析：句意“我们应该买包装少的产品来减少浪费”，with表示“带有”，符合语境。

21. B 解析：newspaper与use（使用）是被动关系，can后接be+过去分词，reuse本身含“重复使用”，无需再用be reused，故选be used。

22. C 解析：上句提议“步行去公园而不是坐公交”，答语应表示赞同，Good idea!（好主意）符合语境。

23. B 解析：stop doing sth. 表示“停止做某事”，句意“我们必须停止使用塑料袋”，用using。

24. A 解析：ask sb. to do sth. 表示“要求某人做某事”；let/make/have sb. do sth. 后接动词原形，无to，此处后接to protect，用ask。

25. A 解析：if引导的条件状语从句，主句用一般将来时，there be句型的一般将来时是there will be。

26. A 解析：give away 表示“捐赠”，句意“我们可以把旧衣服捐赠给贫困地区的孩子”，符合“重复使用”的语境；throw away（扔掉）、put away（收好）、take away（拿走）均不符合。

27. B 解析：turn off 表示“关闭”，句意“没人看电视时应该关掉电视”，符合节约用电的语境；turn on（打开）、turn up（调大）、turn down（调小）均不符合。

28. C 解析：It’s one’s duty to do sth. 表示“做某事是某人的责任”，固定句型，用不定式to keep作真正主语。

29. A 解析：enough修饰名词时放在名词前，food是不可数名词，无复数形式，故选enough food。

30. B 解析：stop doing sth. 表示“停止做某事”，句意“许多工厂已经停止向河里倒脏水”，用pouring。

31. C 解析：use sth. to do sth. 表示“用某物做某事”，固定搭配，用to make表示目的。

32. C 解析：答语省略了主句，用不定式to plant作主语，句意“我认为是种更多的树”。

33. B 解析：everyone是不定代词，作主语时谓语动词用第三人称单数形式，if引导的条件状语从句用一般现在时，故选makes。

34. B 解析：avoid doing sth. 表示“避免做某事”，固定搭配，用throwing。

35. B 解析：“h”的发音以元音音素/eɪ/开头，用an；“u”的发音以辅音音素/juː/开头，用a。

36. A 解析：think of 表示“想出、想到”，句意“我姐姐经常帮我想出重复使用旧东西的方法”；think about（考虑）、think over（仔细考虑）、think out（彻底想出）均不符合。

37. B 解析：“我们需要保护动物”的原因是“它们是我们的朋友”，用because引导原因状语从句。

38. A 解析：一次性筷子会“浪费”太多树，waste（浪费）符合题意；save（节约）、protect（保护）、help（帮助）均相反。

39. A 解析：make a shopping list 表示“列购物清单”，固定搭配，用make。

40. B 解析：宾语从句中，陈述客观真理（地球绕太阳转）时，无论主句时态如何，从句都用一般现在时，the Earth是第三人称单数，用goes。

来源：蒙古元素