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
High Dive Cheryl Sterns aims to go boldly where no human has ever gone before in a balloon: 40 kilometers up into the atmosph
High Dive Cheryl Sterns aims to go boldly where no human has ever gone before in a balloon: 40 kilometers up into the atmosph
admin
2010-01-14
36
问题
High Dive
Cheryl Sterns aims to go boldly where no human has ever gone before in a balloon: 40 kilometers up into the atmosphere. (46) No one has ever leapt from such a height or gone supersonicl without an airplane or a spacecraft. Yet Sterns, an airline pilot, is not the only person who wants to be the first to accomplish those feats. Two other brave people, an Australian man and a Frenchman, are also planning to make similar leaps.
(47) First, she’ll climb into a cabin hanging from a balloon the size of a football field2. Then balloon will take her high into the stratosphere—the layer of Earth’s atmosphere 12 to 50 kilometers above the planet. “The ascent will take two and a half to three hours,” said Sterns. “I’ll be wearing a fully pressurized, temperature-controlled space suit.”
At 40 kilometers, Sterns will be able to see the gentle curve of Earth and the blackness of space over head. Then she’ll unclip herself from the cabin and dive headfirst, like a bullet, into the atmosphere. (48)
For high dive, astronaut escape suits are a key to success. Current pilot and astronaut escape suite are guaranteed only a maximum altitude of 21 kilometers. Del Rosso, a NASA engineer of spacesuits and life-support systems, said the suit designed for Stern’s jump could serve as a model for the lethal environment of higher climbs. (49) The first hazard is oxygen-deficient air. Any person without an additional oxygen supply at 40 kilometers would die within three to five seconds. The second hazard is low atmospheric pressure. Atmospheric pressure is much lower at high altitudes than it is at sea level. The low atmospheric pressure of the upper stratosphere causes the gases in body fluids to fizz out of solution like soda bubbles. (50) Other hazards include temperatures as low as — 55 degrees Celsius, flying debris, and solar radiation.
For Sterns to survive, her spacesuit will have to protect her from all of these hazards. “A spacesuit is like a one-person spaceship,” Del Rosso explained. “You have to take everything you need in a package that’s light enough, mobile enough, and tough enough to do the job. You can’t exist without it.”
A. It will handle several major hazards.
B. Escape suits are tough enough to stand the atmospheric pressure of the upper stratosphere.
C. From there, she’ll take a death-defying leap back to Earth at supersonic speed.
D. “In 30 seconds, I’ll be going Mach (马赫) speed,” said Sterns.
E. How will Sterns make her giant jump?
F. In short, blood boils.
选项
答案
A
解析
后面的句子列举了许多hazards。据此推论,此处的句子应该是引导句或概括句。选项A中有several major hazards这几个概括词,与后面列举的各种hazards相呼应。
转载请注明原文地址:https://jikaoti.com/ti/p1OsFFFM
本试题收录于:
职称英语理工类基础题库职称英语分类
0
职称英语理工类基础
职称英语
相关试题推荐
LoweringtheRiskofHeartDiseaseLikemillionsofotherAmericans,Icomefromafamilywithahistoryofheartdisease.Myfa
Thepurposeoftheexperimentswastofundouthowtheclockworks.Scientistsarecrueltodoexperimentswithhamsters.
Accordingtothepassage,whichofthefollowinghaschangedthemostinthelast500years?Whichcountryisthelargestcoffe
Inthe1ststudy,studentswhostayuplate______.Thepassageindicatesthatchronotherapycanbeusedtohelppeopleto______
WaterResourceMorethanhalfofthewaterusedfordrinking,washingandirrigatingcomesfromundertheground.Thissubte
I’mSorry,Iwon’tApologizeAlmostdaily,newsreportsincludeaccountsofpublicfiguresorheadsofcompaniesbeingforce
Since1955,lifeexpectancyratesintheU.S.haveComparedwiththecountrywiththelongestlifeexpectancy,theU.S.is
AbecauseoftheirsimilarityBthatwewouldnotbeabletounderstanditatallCtothepopularizationofEnglishasaworld
ViennaViennawasoneofthemusiccentersofEuropeduringtheclassicalperiod,andHaydn,Mozart,andBeethovenwereall
ViennaViennawasoneofthemusiccentersofEuropeduringtheclassicalperiod,andHaydn,Mozart,andBeethovenwereall
随机试题
足太阳之脉终绝,可见()(1996年第77题;2000年第77题)
学校社会工作者在开展小组工作时,考查与预估阶段应遵循的原则是()。
简述护理人员的职业防护措施。
使用价值、交换价值、价值三者之间的关系是()
患者,男,24岁。食用海鲜后,突发皮肤瘙痒难忍,可见散在分布的大小不等、形态各异的淡红色风团,边界清楚,此伏彼起,伴脘腹疼痛,恶心呕吐,舌红苔黄腻,脉滑数。其治疗除主穴外还应选用
商业银行按照()可以分为个人贷款和公司贷款。
(1)靠近暗堡(2)把爆破筒塞进暗堡的射击口(3)背起冲锋枪(4)拉着导火线(5)抱着爆破筒跳出战壕(6)向暗堡匍匐前进
固定成本是指在一定的范围内不随产品产量或商品流转量变动的那部分成本。与固定成本相反,变动成本是指那些成本的总发生额在相关范围内随着业务量的变动而呈线性变动的成本。根据上述定义,下列属于变动成本的是:
在分布式数据库系统中,逻辑数据库被划分成若干片段,其中按投影操作来分片的称为
ReadthetextbelowabouttheWeblifestyle.Inmostofthelines(34-45),thereisoneextraword.Itiseithergrammaticallyin
最新回复
(
0
)