英语人教版 (2019)Unit 4 Space Exploration课后复习题

SectionⅠ　ListeningandSpeaking

一、单句语法填空

1.The final team 　　　　　　　(select) will be made tomorrow. 

答案:selection

2.The boy looked at the toys 　　　　　　(curious) in the store. 

答案:curiously

3.She’s a woman of high 　　　　　　　　(intelligent). 

答案:intelligence

4.There are many 　　　　　　　(require) to be a teacher. 

答案:requirements

二、完成句子

1.他们低估了她的才智。

They underestimated 　　　　　　　　　　　　　　. 

答案:her intelligence

2.我的室友对我以前的生活非常好奇。

My roommate was 　　　　　　　　　　my previous life. 

答案:curious about

3.重要的是要注意你的身心健康。

It’s important to notice your 　　　　　　　　　　　　　　　　　well-being. 

答案:mental and physical

4.不仅他英语讲得流利,就连他父母也讲得非常好。

Not only 　　　　　　　　　　　　　　　　　　English fluently,but also his parents speak it very well. 

答案:does he speak

三、阅读理解

Can a small group of drones(无人机) guarantee the safety and reliability of railways and,at the same time,help railway operators save billions of euros each year?That is the very likely future of applying today’s “eyes in the sky” technology to making sure that the millions of kilometres of rail tracks and infrastructure(基础设施) worldwide are safe for trains on a 24/7 basis.

Drones are already being used to examine high-tension electrical lines.They could do precisely the same thing to inspect railway lines and other vital aspects of rail infrastructure such as the correct position of railway tracks and switching points.The more regularly they can be inspected,the more railway safety,reliability and on-time performance will be improved.Costs would be cut and operations would be more efficient(高效) across the board.

That includes huge savings in maintenance costs and better protection of railway personnel safety.It is calculated that European railways alone spend approximately 20 billion euros a year on maintenance,including sending maintenance staff,often at night,to inspect and repair the rail infrastructure.That can be dangerous work that could be avoided with drones assisting the crews’ efforts.

By using the latest technologies,drones could also start providing higher-value services for railways,detecting faults in the rail or switches,before they can cause any safety problems.To perform these tasks,drones for rail don’t need to be flying overhead.Engineers are now working on a new concept:the rail drones of the future.They will be moving on the track ahead of the train,and programmed to run autonomously.Very small drones with advanced sensors and AI and travelling ahead of the train could guide it like a co-pilot.With their ability to see ahead,they could signal any problem,so that fast-moving trains would be able to react in time.

1.What makes the application of drones to rail lines possible?

A.The use of drones in checking on power lines.

B.Drones’ ability to work at high altitudes.

C.The reduction of cost in designing drones.

D.Drones’ reliable performance in remote areas.

答案:A

解析:细节理解题。根据第二段第一句可知,无人机目前正在被用来检查高压电线,这使得它将被应用于铁路系统成为可能。故选A项。

2.Whatdoes“maintenance”underlinedinparagraph3referto?

A.Personnelsafety.

B.Assistancefromdrones.

C.Inspectionandrepair.

D.Constructionofinfrastructure.

答案:C

解析:词义猜测题。根据第三段中的“toinspectandrepairtherailinfrastructure”可以推断出,画线单词指的就是“维修,维护”。故选C项。

3.Whatfunctionisexpectedoftheraildrones?

A.Toprovideearlywarning.

B.Tomaketrainsrunautomatically.

C.Toearnprofitsforthecrews.

D.Toacceleratetransportation.

答案:A

解析:细节理解题。根据最后一段的第一句和最后一句可知,人们期盼铁路无人机在未来能够提供预先警报,确保列车能及时应对问题,从而提高安全系数。故选A项。

四、语篇填空

China’s Chang’e 5 mission 1.　　　　　 (successful) delivered samples of moon rocks and dust to Earth on December 17,2020.It marks 2.　　　　　　 first time in 44 years that moon rocks have been brought back to our planet. 

The sample capsule landed in Inner Mongolia 3. a little after 2:00 a.m.Thursday local time.The drop-off was the ending of a 23-day mission that began on November 24,4.　　　　　　 China sent up Chang’e 5 from a site on Hainan Island.The mission’s goal was 5.(collect) at least four pounds of material and bring it back to Earth. 

The material collected by Chang’e 5 was from a site in the northwest region of the moon’s near side.This area was formed more recently,and the rocks here 6.(think) to be only about 1.2 billion years old now.That means scientists 7.　　　　　　(study) the material could learn more about the 8.(evolve) of the moon. 

Although Chang’e 5 was a short mission,it was one of 9.　　　　　　　 (complex) projects undertaken by the Chinese space program so far.The country is far from done with the moon—Chang’e 6,10.(it) second lunar sample return,is ready to launch in 2023 or 2024. 

答案:1.successfully　2.the　3.at　4.when　5.to collect  6.are thought　7.studying　8.evolution　9.the most complex　10.its