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
专升本
On a clear night you can see many stars in the sky. These stars are millions of miles away. Are there living things on any of th
On a clear night you can see many stars in the sky. These stars are millions of miles away. Are there living things on any of th
admin
2011-04-26
47
问题
On a clear night you can see many stars in the sky. These stars are millions of miles away. Are there living things on any of the stars? People have always thought about this question. They could not find the answer before now. Today scientists know more about space than ever before. Some machines can help them look for the answer.
How will scientists do this? People can’ t go to the stars. The stars are far away. A person would take hundreds of years to the next star in a spaceship. So scientists are sending out radio signals. These signals travel in space at the speed of light. At that speed, radio signals will take 25 years to reach the next star. The signals ask "Is there anyone out here?". Living things in space must have machines to hear the signals. We will not get an answer to our signals for more than 50 years. However, scientists are already listening. Someone from space may be trying to send signals to us, too.
Scientists also have sent large telescopes into space. A telescope can make things look larger. The telescopes are going around the earth. They are looking for life on other worlds. In the next few years we may get an answer to the question, "Is there life in space.
"Are there living things in space?" " ______."
选项
A、We have already got an answer to this question
B、We will never get an answer to this question
C、We got an answer to this question long ago
D、We may get an answer to this question in the next few years
答案
D
解析
文章最后一句告诉我们,在未来的几年里,我们也许就得出这个问题的答案了。
转载请注明原文地址:https://kaotiyun.com/show/K5qC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
ItwasMonday,Mrs.Smith’sdogwashungry,buttherewasnotanymeatinthehouse.Consideringthattherewasnobetterwa
Somepeoplethinkthemoreexpensiveaproductis,thebetteritwillbe.(但事实并非如此).
NotuntilMr.SmithcametoChina______whatkindofcountrysheis.
Thenewspapersreportedyesterdayseveral______ontheboundariesofthesetwocountries.
Parentsshouldn’t______(favorable)oneoftheirchildrenmorethantheothers.
Thefindingsshowingeneraltermsthatcontractionofthebrainbegins______inpeopleinthecountrythaninthetowns.
IntheUnitedStatesthefamilyplaysanimportantroleinmostholidayactivities.NovemberisNationalAdoptionMonth.Wevisi
Withoutwater______livingthingscouldsurvive.
IntheUnitedStates,teachingisveryimportant.Ifteachersdonotteachwell,studentscomplain.Ifmanystudentsdonotunde
随机试题
根据《民事诉讼法》及相关规定,下列关于诉前财产保全的说法,正确的是?
根据《会计法》和《总会计师条例》的规定,总会计师的任职条件是_________。
阳光的香味林清玄我遇见一位年轻的农夫。在南方一个充满阳光的小镇。那时是春末,一季稻谷刚刚收成,春日阳光的金线如雨倾盆地泼在温暖的土地上,牵牛花在篱笆上缠绵
下列生物碱碱性最强的是()
乙状结肠扭转的典型的影像学表现是小肠扭转的典型的影像学表现是
A.700mg/dB.800mg/dC.15mg/dD.20mg/dE.45mg/dWHO推荐的孕妇锌供给量标准为()
国家对用于()的列入强制检定目录的工作计量器具实行强制检定。
我国《海关法》规定,除法定减免税以外,关税的减免权限属于()。
下列不属于110报警服务台受理报警范围的是()。
根据下列资料,回答下列问题。2010年,浙江省进出口总额为2534.7亿美元,比上年增长35%,其中进口729.9亿美元,增长33.4%;出口1804.8亿美元,增长35.7%,出口占全国的比重从上年的11.1%提高到11.4%。
最新回复
(
0
)