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
What are the speakers mainly discussing?
What are the speakers mainly discussing?
admin
2011-01-21
74
问题
What are the speakers mainly discussing?
M: Did you know that astronauts have made commercial products in space?
W: No. I wasn’t aware of that. What kind of products?
M: Tiny plastic beads.
W: Beads? Do you mean to tell me that astronauts have nothing better to do than make jewelry beads in space? It seems to me that they can make more useful things out there.
M: Oh ! But these plastic beads aren’t for jewelry. They can be used for many scientific purposes, from conducting cancer research to calibrating microscopes.
W: That sounds better. But why make such objects in space rather than on earth?
M: Because earth’s gravitational pull affects the beads. The beads produces on earth are distorted not exactly round. The ones made in space are precise spheres.
选项
A、To produce them more cheaply.
B、To keep them a uniform size.
C、To make them lighter.
D、To make them perfectly round.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/Ak3d777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Generallyspeaking,aBritishiswidelyregardedasaquiet,shyandconservativepersonwhois【C1】______onlyamongthosewithw
Accordingtothespeaker,whatshouldthelistenersdoassoonaspossible?
WhichofthefollowingiscoveredinBCDInternationalprograms?
PragmatismisaphilosophicalmovementthathashadamajorimpactonAmericanculturefromthelate19thcenturytothepresent
Tounderstandhowastrologyworks,weshouldfirsttakeaquicklookatthesky.Althoughthestarsareatenormousdistances,t
MarkTwain’sletterabouttheStatueofLiberty_____.
Whatarethetwospeakerstalkingabout?
WritealettertoMr.Smith,explainingthereasonwhyyoucannotgoandhowyouplantomakeupforit.Mr.andMrs.Smithreque
Youhavereceivedtheinvitationbelow,butyouwillnotbeabletoattendtheparty.WritealettertoMr.Smith,explainingth
Youhaveboughtanewcomputer.Butyoufindsomethingiswrongwithitinoneweek.Youwritealettertothemanagerofthest
随机试题
诊断支气管哮喘的主要依据是
常规肺部摄影正确的呼吸方式是
患者,女,50岁。以颊黏膜粗糙感、反复刺激性疼痛就诊。检查:双颊黏膜及下唇红有网状白纹,右颊及唇红损害区有少量充血区。可作为本病的诊断依据的是
A.氯霉素B.氯丙嗪C.甲氧氯普胺D.阿奇霉素E.阿洛司琼可能导致局部缺血性结肠炎的药物是()。
某女士因患有子宫脱垂住院治疗,她向护士询问自己患有该病的原因,护士解答时告知发生子宫脱垂的常见因素,下列错误的是
(2008)下面哪一条不符合饮水供应的有关设计规定?
利率决定于货币供求数量,而货币需求量又是基本取决于人们的流动性偏好。如果人们偏好强,愿意持有的货币数量就增加,当货币的需求大于货币的供给时,利率上升;反之,偏好弱时,对货币的需求下降,利率下降。由此可以推出:
二维数组A[0…8)[0…9],其每个元素占2字节,从首地址400开始,按行优先顺序存放,则元素引A[8,5]的存储地址为
每个applet必须定义为__________的子类。
Science,inpractice,dependsfarlessontheexperimentsitpreparesthanonthepreparednessofthemindsofthemenwhowatch
最新回复
(
0
)