外研版（2019）选择性必修 第四册Unit 6 Space and beyond Developing ideas课后检测练（含答案）

Unit6 Space and beyond——Developing ideas
一、单句语法填空
1. Glass is used to make spectacles, microscopes and _____(telescope).
2. The boy was watching a mirror ____(angle) to reflect light from a window.
3. We still don’t know how many ____ (galaxy)there are in the universe.
4. We could have flashed by one another like two pieces of _____(cosmos) dust.
5. The mission could _____(conceivable)be accomplished within a week.
二、完形填空
My name is Miranda Gibson. I have been at the top of a tree for five months now. Some people might wonder 　1　 on earth I would choose to do that.
I have walked through this forest many times. On 12 December 2011, 　2　 rolled into the forest and the destruction(摧毁) began. I couldn’t 　3　 the thought that these forests would be 　4　 forever. So, on 14 December 2011, I packed up my life, 　5　 of my job plans, and climbed 60 meters to the top of this tree. I have been here ever since.
Life in the tree tops can be 　6　 at times. I have times when I feel frustrated(沮丧) and wish I could 　7　, to anywhere, just have a 　8　 of scenery for a minute! There are times too, when I feel terribly 　9　. I miss my friends and family. 　10　 these times, I find myself loving the 　11　.
Living on the tree has been inspiring. I am willing to 　12　 up here for as long as it takes, 　13　 I honestly hope it won’t be too 　14　 before I can put my feet on the ground below and stand in a forest that will never be 　15　.
1. A. why　　 　B. when　　　C. how　　　D. where
2. A. water B. animals
C. machinery D. tourists
3. A. bear B. help C. keep D. spare
4. A. sold B. stolen C. protected D. lost
5. A. grew out B. fell short
C. ran out D. let go
6. A. refreshing B. risky
C. challenging D. rewarding
7. A. get up B. get away
C. give in D. give up
8. A. change B. look C. search D. touch
9. A. confused B. nervous C. sorry D. lonely
10. A. Beyond B. Without C. Despite D. Unlike
11. A. height B. experience
C. background D. position
12. A. return B. stop C. stay D. hide
13. A. but B. though C. because D. so
14. A. soon B. long C. near D. bad
15. A. moved B. logged C. burned D. missed
三、阅读理解
Since people first launched rockets into space in the 1950s, we have been leaving behind all sorts of things. Some of them, like the camera, were lost by astronauts while they did work outside their spacecraft. But much of the space junk is made up of little pieces of things that were once bigger objects, until they struck each other and broke apart.
Some things we send into space fall back toward Earth and burn up in the atmosphere. But larger pieces sometimes survive the extreme heat and hit the ground or the ocean at great speeds. So there is always concern that something may fall from the sky and do some harm.
But space junk falling on roofs is not the biggest worry. Scientists are concerned about the “Kessler” problem. Imagine what happens when an empty rocket strikes another while orbiting the earth. Two big things become many smaller things. They then hit other things. The pieces get smaller and smaller until they form a cloud of junk that blocks the path of future space vehicles.
Marco Castronuovo, an Italian Space Agency researcher, says launching a satellite into space that would get very close to some of the larger pieces of space junk. The satellite would connect a small rocket to the useless object. When the rocket explodes, it pushes the junk into a lower and slower orbit, nearer the Earth. After a time, the junk burns up in the atmosphere. Mr Castronuovo has proposed using a number of small satellites with robotic arms. One arm would catch the space junk, and another arm would connect the rocket. He imagines that each satellite could jump from one large piece of junk to another. He thinks this method could destroy about ten large objects each year.
Scientists have been concerned about space junk for many years. Right now, the costs of the clean-up have been too great. Mr Castronuovo says his system could be put in place for a much more reasonable amount of money. So what can be done to clean up the space around our planet
1. We can learn from the text that much of the space junk ______.
A. was left by the astronauts on purpose
B. is mainly made up of broken spaceship
C. is usually made of small pieces of things
D. burns up before it reaches the atmosphere
2. Now scientists are most worried that space junk will ______.
A. harm the future space vehicles
B. do some harm to the atmosphere
C. fall on people’s house roofs
D. destroy the habitat of wildlife
3. It implies in the last but one paragraph that ______.
A. clearing up the space will actually cost little
B. small rockets also do harm to the atmosphere
C. only robots can clear up the space completely
D. it is still difficult for us to clear up the space
4. What is the text mainly about
A. Space junk threatens earth’s orbital environment.
B. Scientists use different methods to clear up space junk.
C. Spacecrafts will meet with a lot of space junk in the future.
D. Marco comes up with many methods to deal with space junk.
一、单句语法填空
1.telescopes
2.angled
3.galaxies
4.cosmic
5.conceivably
二、完形填空
1.A。根据上文I have been at the top of a tree for five months now. 可知, 有些人想知道我为什么会待在树上。故选A。
2.C。根据下文and the destruction began, 结合选项可知, 是机器开进来, 破坏开始了。故选C。
3.A。根据下文So, on 14 December 2011, I packed up my life, ______of my job plans, and climbed 60 meters to the top of this tree. 可知, 作者一想到这些森林将永远消失, 就受不了, 所以他决定住在树上。故选A。
4.D。根据上文On 12 December 2011, ______ rolled into the forest and the destruction began. 可知, 森林遭到摧毁, 将永远消失。故选D。
5.D。根据下文I have been here ever since. 可知, 作者放弃了他的工作计划。故选D。
6.C。根据下文I have times when I feel frustrated and wish I could ______, to anywhere, just have a ______of scenery for a minute! 可知, 在树顶上生活是具有挑战性的一件事情。故选C。
7.B。根据上文I have times when I feel frustrated 及空后to anywhere可知, 作者希望自己能离开这里。故选B。
8.A。根据上文I have times when I feel frustrated and wish I could ______, to anywhere可知, 此处指“风景的改变”, 也就是“换个环境”。故选A。
9.D。根据下文I miss my friends and family. 可知, 有时我也会感到非常孤独, 我想念我的朋友和家人。故选D。
10.C。结合前面的There are times too, when I feel terribly ______. I miss my friends and family可知, 尽管有这些让我感到非常孤独的时刻, 我还是喜欢这种经历。根据语境可知, 前后句意存在让步关系, 故选C。
11.B。根据下文Living on the tree has been inspiring. 可知, 作者喜欢住在树顶上的经历。故选B。
12.C。根据上文Living on the tree has been inspiring. 可知, 作者认为自己愿意在这里待多久就待多久。故选C。
13.A。根据前面的 I am willing to ______up here for as long as it takes我愿意在这里待多久就待多久, 但我真的希望在我能脚踏实地之前不会是太长时间, 站在一个永远不会被砍伐的森林里。可知, 前后句存在转折关系。故选A。
14.B。根据前面的I honestly hope it won’t be too和后面的before I can put my feet on the ground below and stand in a forest that will never be ______可知, 但我真的希望在我能脚踏实地之前不会是太长时间, 站在一个永远不会被砍伐的森林里。根据语境及选项可知, 作者希望在他就能脚踏实地之前不会是太长时间。故选B。
15.B。根据before I can put my feet on the ground below and stand in a forest that will never be ______可知, 此处指“被砍伐”。故选B。
三、阅读理解
1.C。细节理解题。从第一段的“But much of the space junk is made up of little pieces of things that were once bigger objects”可知, 许多的太空垃圾都是由曾经是更大物体的小碎片构成的。故选C项。
2.A。推理判断题。从第三段的“The pieces get smaller and smaller until they form a cloud of junk that blocks the path of future space vehicles. ”可知, 如果太空中形成了垃圾云层, 那以后发射的太空飞船就会遇到危险了。可知现在科学家最担心太空垃圾会危害未来空间飞行器。故选A项。
3.D。推理判断题。从倒数第二段的内容可知, 清理太空垃圾不是一件非常容易的事情, 故选D项。
4.A。主旨大意题。本文主要讲的是太空中存在着许多垃圾, 这些垃圾慢慢会对地球及以后发射的太空飞船构成威胁, 科学家们正在研究如何清理它们。故选A项。
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