首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
When Jack Davis, 9, looks up at the night sky, he doesn’ t see just the stars. He sees his future. The fourth grader from New Je
When Jack Davis, 9, looks up at the night sky, he doesn’ t see just the stars. He sees his future. The fourth grader from New Je
admin
2019-04-15
71
问题
When Jack Davis, 9, looks up at the night sky, he doesn’ t see just the stars. He sees his future. The fourth grader from New Jersey has a deep interest in outer space and the alien (外星的) beings he thinks might live there.
In July, Jack heard that NASA was looking for a new planetary protection officer and decided he was the right person for the job. The position, which focuses on preventing astronauts from accidentally bringing extremely small, potentially dangerous alien life-forms back to Earth and ensuring that astronauts do not take Earth-based germs with them into space, pays from $124, 406 to $187, 000 per year.
Jack wrote a letter to NASA, noting his qualifications for the job. " My sister says I am an alien, " Jack wrote, pointing out that since he is young, he can "learn to think like an alien". He signed the letter "Jack Davis, Guardian of the Galaxy".
Within days, Jack received a personal letter from NASA’ s planetary science director, James L. Green. "We are always looking for bright future scientists and engineers to help us, " Green wrote. "I hope you will study hard and do well in school. We hope to see you here at NASA one of these days!"
Jack said he was "shocked" when Green’ s response arrived. "I shouted, I got a letter from NASA!"
Green says he loves to answer letters from children. He calls his response a "gravity assist". Spacecraft use gravity assistance from objects like planets and moons to help power the craft toward another celestial(天上的)body. Green hopes a reply can influence a person’ s path in life in a similar way.
What is the job responsibility of the planetary protection officer?
选项
A、To ensure the mental and physical health of the astronauts.
B、To protect Earth from possible alien attacks in the future.
C、To keep harmful substances from spreading between Earth and outer space.
D、To study the unknown substances astronauts brought back to Earth.
答案
C
解析
细节题。根据文章第二段第二句可知,行星保护官主要是防止宇航员意外地将极其微小的、具有潜在危险的外星生命体带回地球,并确保宇航员不会将地球上的细菌带进太空,因此选项C(防止有害物质在地球和外层空间之间传播)符合文章意思。选项A(确保宇航员的精神和身体健康)、选项B(保护地球免受未来可能的外星人攻击)和选项D(研究宇航员带回地球的未知物质)文中均未提及。故本题选C。
转载请注明原文地址:https://kaotiyun.com/show/n53O777K
0
成人本科学位英语
相关试题推荐
Ioncefoundoutthatdoingafavorforsomeonecouldgetyouintotrouble.Iwasintheeighthgradeat【C1】______time,andwe
TheannualcampaigntomakeSingapore’sthreemillionpeoplemorepoliteendedyesterdayandwasimmediatelyfollowedbyanother
The______goalofthebookistohelpbridgethegapbetweenresearchandteaching,particularlythegapbetweenresearchersand
Mostpeoplemakesuchmistakes______intheirwholelife.
SpeakerA:Hello.CanIbeofservicetoyou?SpeakerB:I’mjustwindowshopping.SpeakerA:Youarealwayswelcome.【D8】_____
Isuggestyouhavingplentyofexerciseinsteadofplaying______dayandnight.
Afterbeingtestedinmanyways,thisnewly-designedmachinewill______inthenearfuture.
Somedriversalwaysdrivecarelessly.Thereissome________dangerwhiletheyaredriving.
ChokweSelassieisonamissiontohelpdriversavoidpotholes(路面坑洼).Theeighth-graderwasinspiredtokickoffhismissionon
Thebiggestroadblockcouldbethemission’shugecost.
随机试题
A.远视B.近视C.散光D.老视E.正视由于眼球前后径过短而导致眼的折光能力异常称为()。
中国古代名相管仲治理齐国时,指定30户为一邑,每一邑设一司宫;10邑为一卒,每卒设一卒师;10卒为一乡,每乡设一乡师;3乡为一县,每县设一县师;10县为一属,每属设一大夫;全国共5属,设5大夫,直接归中央指挥。这种组织设计为何形式,其管理层次是多少?(
设|a|=1,a⊥b,则a.(a+b)=____________。
在星形细胞瘤与脑梗死鉴别中,下列最有意义的是
下列票据丧失后,持票人可以向付款人申请挂失止付()。
下列系数间关系错误的是()。
阅读下面口语交际教学的案例,回答问题。本案例的教学目的是学习使用直接描述的方法表白自己的感受和情绪,学习使用不同的间接方法进行表白和抒情。要求是参与者观察下面的一组照片,然后结对练习,从中选择一张进行描述,让你的同伴猜猜你在说哪一张。教
A、爸爸B、妈妈C、女儿D、儿子D“老妈”是男的对女的的称呼,可见男的是女的的儿子,所以选择D。
Allrepresentativesinsistedthattheproblemsrequiringimmediatesolutionbegiven______.
EmployersandcareerexpertsseeagrowingprobleminAmericansociety--a(n)【C1】______ofcollegegraduates,manyburdenedwitht
最新回复
(
0
)