职称英语《理工B》阅读判断历年真题精选(2)
【摘要】 即将参加职称英语等级考试的考生们，考试即将到来，你们的备考工作进行得如何了？考必过为大家精心整理了职称英语《理工B》阅读判断历年真题精选(2)，希望能够助力职称英语等级考试。那么，同学们一起快来做题吧！关于职称英语《理工B》阅读判断历年真题精选(2)的具体内容如下：
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>>>职称英语《理工B》阅读判断历年真题精选汇总
So Many "Earths"
The Milky Way (银行) contains billions of Earth-sized planets that could support life. That's the finding of new study. It draws on data that came from NASA's top planet-hunting telescope.
A mechanical failure recently put that Kepter space telescope out of service. Kepler had played a big role in creating a census of planets orbiting some 170,000 stars. Its date have been helping astronomers predict how common planets are in our galaxy. The telescope focused on hunting planets that might have conditions similar to those on Earth.
The authors of a study published in The Proceedings of the National Academy of Sciences conclude that between 14 and 30 out of every 100 stars with a mass and temperature similar to the Sun may host a planet that could support life as we know it. Such a planet would have a diameter at least as large as Earth's but no more than twice that big. The planet also would have to orbit in a star's habitable zone. That's where the surface temperature would allow any water to exist as liquid.
The new estimate of how many planets might fit these conditions comes from studying more that 42,000 stars and identifying suitable worlds orbiting them. The scientists used those numbers to extrapolate (推算) to the rest of the stars that the telescope could not see.
The estimate is rough, the authors admit. If applied to the solar system, it would define as habitable a zone starting as close ot the Sun as Venus and running to as far away as Mars. Neither planet is Earthlike (although either might have been in the distant pase). Using tighter limits the researchers estimate the between 4 and 8 out of every 100 sunlike stars could host an Earth-sized world. These are ones that would take 200 to 400 days to complete a yearly orbit.
Four out of every 100 sunlike stars doesn't sound like a big number. It would mean however that the Milky Way could host more than a billion Earth-sized planets with a chance for life.
16. The Kepler space telescope has been in service for 15 years.
A. Right
B. Wrong
C. Not mentioned
17. The main task of the Kepler space telescope is to find out planets with similar conditions to Earth's.
A. Right
B. Wrong
C. Not mentioned
18. The planet that could support life might be a little bit smaller than Earth.
A. Right
B. Wrong
C. Not mentioned
19. The Earth is a planet orbiting in the Sun's habitable zone.
A. Right
B. Wrong
C. Not mentioned
20. The new finding is based on a thorough study of 170,000 stars on the Milky Way.
A. Right
B. Wrong
C. Not mentioned
21. The estimate of the number of planets that could support life is not very accurate.
A. Right
B. Wrong
C. Not mentioned
22. This is the first research finding about the planets with a chance for life.
A. Right
B. Wrong
C. Not mentioned
以上就是考必过为大家整理的职称英语《理工B》阅读判断历年真题精选(2)的具体内容。所谓未来，其实只是过去的堆砌，堆砌昨天便有了今天，堆砌今天便有了明天，堆砌明天便是未来。最后，考必过预祝大家在未来的职称英语等级考试中能够取得优异的成绩！