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 is Telstar X made of?
What is Telstar X made of?
admin
2009-01-05
8
问题
What is Telstar X made of?
Government officials have expressed anxiety over the decent of Telstar X, a satellite which is slowly reentering the earth’s atmosphere. The satellite is supposed to make its descent sometime within the next several months. Because Telstar X is built of titanium, it is not expected to disintegrate upon reentry. In fact, there are fears that dozens of pieces weighing up to several kilograms could survive the reentry process.
Although several kilograms sounds like a small amount of material, it must be remembered that when an object from space strikes the earth, the consequences can be disastrous. Many scientists believe that asteroids from space striking the earth may have caused the extinction of the dinosaurs. Even an object as large as several grams can destroy an entire house. If larger pieces fall on inhabited areas the devastation would be significant.
The pieces of the satellite are not expected to all land in one area. It is likely that they would be spread out over hundreds of kilometres. This is a dangerous situation in which many homes could be destroyed and many people injured. If we are lucky, the pieces of the satellite will fall over the oceans. Luckily, since the oceans cover almost three quarters of the earth’s surface, there is a good chance of that happening.
选项
A、Titanium.
B、Asteroid material.
C、Steel
D、Uranium.
答案
A
解析
原文中有“Because Telstar X is built of titanium..." 一句。
转载请注明原文地址:https://kaotiyun.com/show/t7BK777K
0
专业英语四级
相关试题推荐
Doctorsbaffledbyanunexplainedrashonpeople’searsorcheeksshouldbeonalertforaskinallergycausedtoomuch【M1】_____
Healthyadultstakeapproximately10-14breathsperminute,butsomepeoplebreathe20ormoretimes—thiscanleadtofeeling
Thebrainsofchildrenareaffectedbyfamilyviolenceinthesamewayascombataffectssoldiers,accordingtoastudy.Inbot
Demographyisthestatisticalstudyofhumanpopulations.Itcanbeageneralsciencethatcanbeappliedtoanykindof
Instormytimes,investorslookforsomethingsolidtohangonto—somethinglikegold.TheWorldBankpresidenthimself,Robert
Therehasbeenmuchchatteraboutbankloanstolocalgovernments’financingvehicles,widelyregardedasoneofthemain
Therehasbeenmuchchatteraboutbankloanstolocalgovernments’financingvehicles,widelyregardedasoneofthemain
WhenTonyBlairwaselectedtoBritain’sHouseofCommonsin1983,hewasjust30,theLabourParty’syoungestM.P.Labourhadj
WhatisTelstarXmadeof?
随机试题
消费者从物品消费中所获得的总效用一定是不断增加的,边际效用总是正的。()
关于AST在急性心肌梗死时的变化,正确的是()
肺回缩力来自
关于口腔癌,描述不正确的是
氟尿嘧啶能使溴水褪色,可用于鉴别的结构基础是
在项目无资金约束的条件下,方案比选定量分析方法一般采用()等。
卷内文件排列具体要求:文字材料按事项、专业顺序排列。同一事项的请求与批复、同一文件的印本与定稿、主件与附件不能分开,并按()的顺序排列。图纸按专业排列,同专业图纸按图号顺序排列。
刚构桥的施工一般采用()施工。
关于商业银行的贷款业务,下列说法正确的是()。
改革是新时期最鲜明的特点之一,也是邓小平理论最具特色的内容之一。下列有关改革的说法正确的是()。
最新回复
(
0
)