首页
登录
职称英语
Why was scientific satellite MAVEN sent to space? [originaltext]In this section,
Why was scientific satellite MAVEN sent to space? [originaltext]In this section,
游客
2024-08-15
6
管理
问题
Why was scientific satellite MAVEN sent to space?
In this section, you will hear five short news items. After each item, which will be read only once, there will be a twenty-second pause. During the pause, read the question and the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on the answer sheet with a single line through the centre.
16. In September, the U. S. scientific satellite MAVEN(Mars Atmosphere and Volatile Evolution Mission)entered an orbit around Mars, with the mission of learning what happened to the Red Planet’s atmosphere and water. MAVEN’s principal investigator Bruce Jakosky says scientists now know that Mars once had a much denser atmosphere and that it has changed significantly o-ver the last few billion years. What they still don’t know is how and why that happened.
17. Scientists have been experimenting with four-legged robots for years, trying to see if they could be used as pack animals for carrying heavy loads over a difficult terrain. But the machine’s power requirements limited their potential. That’s changed, with a running robot designed by a group of engineers at Massachusetts Institute of Technology that operates on batteries rather than heavy gasoline-powered engines.
18. People often blame Hollywood movies, U. S. television shows and fast food for spreading American culture around the world. But a college entrance exam? Some people are criticizing planned changes to the Scholastic Aptitude Test as an attempt to spread American values to students o-verseas. Starting in 2016, the SAT will require test-takers to read from parts of the U. S. Constitution, the Declaration of Independence or other historical documents.
19. The cycle of poverty is often difficult to break, especially for women. Author Ritu Sharma witnessed the difficulties first-hand in travels through four countries including Sri Lanka. She shares her experience in her book Teach a Woman to Fish. Sharma explains to Daybreak Asia’s Frances Alonzo ways she sees that women can challenge and break free from oppressive systems that keep them poor.
20. The U. S. holiday shopping season is officially under way, with Black Friday discounts drawing millions of shoppers in stores and online. From California to New York—this is how the holiday shopping season begins—the early lines, the massive crowds—many of them lured in by Black Friday specials, from $ 99 flat screen TVs to toys at less than half their usual price. It’s enough to bring in the savvy shoppers and those just curious to see what all the fuss is about.
选项
A、To find out if there are any living creatures or plants on Mars.
B、To collect water samples from Mars and learn what is happening on Mars.
C、To learn what happened to the atmosphere and water on Mars.
D、To study the geological and geographical conditions on Mars.
答案
C
解析
报道中提到美国人造卫星进入火星轨道,并指出“with the mission of learning whathappened to the Red Planet’s atmosphere and water.”,可知发送这颗卫星是为了了解火星上的大气和水发生了什么变化,因此选C项。
转载请注明原文地址:https://tihaiku.com/zcyy/3720735.html
相关试题推荐
WhatistheaccidenthappeninginRegentStreet?[br][originaltext]W:Here’st
WhatistheaccidenthappeninginRegentStreet?[br][originaltext]W:Here’st
WhatistheaccidenthappeninginRegentStreet?[br][originaltext]W:Here’st
WhatistheaccidenthappeninginRegentStreet?[originaltext]W:Here’sthetra
HowlongdidAlbertstaywiththehorsehenamedJoey?[br][originaltext]Alan:
HowlongdidAlbertstaywiththehorsehenamedJoey?[br][originaltext]Alan:
HowlongdidAlbertstaywiththehorsehenamedJoey?[originaltext]Alan:Thes
HowlongisKarenplanningtotravel?[br][originaltext]M:Whenareyouoffto
HowlongisKarenplanningtotravel?[br][originaltext]M:Whenareyouoffto
HowlongisKarenplanningtotravel?[br][originaltext]M:Whenareyouoffto
随机试题
Smartphonesare______theoldonesinperformance.A、inferiorthanB、superiorto
A.e-2x+c B.-2e-2x C.-2e-2x+c D.4e-
下列哪种寄生虫的生活史属于间接型A.蛔虫 B.钩虫 C.蛲虫 D.鞭虫
被多数接受的子宫内膜异位症的发病学说为A.遗传学说 B.异位种植学说 C.免
相对于银行借款来说,下列关于债券筹资特点的说法中,错误的是( )。A、募集资金使
下列抗真菌药物中,需要在体内转化为活性药物后才能发挥作用的是A.两性霉素B B
土地增值税实行超额累进税率,增值额超过扣除金额100%、未超过200%的部分,税
财政政策可分为自动稳定的财政政策和相机抉择的财政政策,其分类的依据是()
采用工程量清单方式招标时,工程量清单的准确性和完整性应由()负责。A.编制清单
施工进度控制的技术措施涉及对实现进度目标有利的技术,包括()。A.施工人员
最新回复
(
0
)