大学英语四六级考试中的听力环节进行了改革，为了帮助同学们更好的复习，以下是小编为大家搜索整理的六级英语听力考前冲刺练习，希望能给大家带来帮助!更多精彩内容请及时关注我们应届毕业生考试网!
When NASA launched the Kepler Space Telescope in 2009, scientists learned something new - and quite significant, says the director of the Space Telescope Science Institute, Matt Mountain.
“Our galaxy has at least 100 billion planets in it.
And we didn't know that five years ago," said Mountain.
Of course, Kepler and today's other powerful telescopes cannot actually see those planets; they are too faint against the light of their stars.
But scientists can measure the change of light when they pass in front of the star and analyze the light passing through their atmosphere to determine what is in it.
“Well, if we were looking at Earth, we would see signs of our sky, our blue sky, we would see signs of oxygen, of carbon-dioxide, of sulfur dioxide from volcanoes and we might even see signatures that there was plant life," said NASA's astrophysicist and former astronaut John Grunsfeld. "And we see that by dissecting the light into its component colors."
Most of the planets discovered so far are unlike Earth. They are too big, too small, too close to their sun, or too far away to support life. But astrophysicist Sara Seager says small planets the size of Earth are extremely common.
“We're looking for biological signatures, gasses that are produced by life, gasses that don't belong in the atmosphere," said Seager.
In cooperation with the European Space Agency and scientists from other nations, NASA is building the next generation of space telescopes that may be able to find evidence of life.
The James Webb Space Telescope, scheduled to be deployed in 2018, will have unprecedented sensitivity and resolution that will greatly improve the spectroscopic analysis of distant stars and planets.
NASA’s chief scientist Ellen Stofan says the agency also plans to look for life on Jupiter’s moon Europa, which may have an ocean under its ice cover.
“In our own solar system we know where to go, we know what to measure it and we're in the process of doing just that. Looking out, beyond our solar system, we're on the right track, we're making the right measurements and we're just on the cusp of learning so much," said Stofan.
Scientists say there's a very high probability that they will find a planet very much like Earth. That could help answer the question: how hard is it for life to get a foothold in the universe?
【相关阅读】英语常用高频词汇考点
1、print
1、打印。
Print this article out. 把这份文件打印出来。
2、印刷。与publish 相近，the printing industry 就是印刷业，out of print绝版。
The book has been out of print for some time now。
3、用印刷体写。
I have printed my family name, first name, date of birth, and address。
我用印刷体写上了我的姓，名，生日和地址
2、quality
本意为名词"质量"，在听力中也常用作形容词，表示"高质量的"。如：quality life
I am looking for quality paper to type my essay. 我在找高质量的纸来打印论文。
3、quote / quotation
原意"引用"，在听力中出现的意思是报价。
买东西询问报价?
What's your quotation? Can you quote for the new flat?
你的报价是多少?你能估计一下这套新公寓的价格吗?
4、realize
1、意识到。
I realize that I make a big mistake now. 我意识到自己犯了大错。
2、实现。最常用的'说法就是实现梦想，realize the dream。
5、run
1、着急。Why run?
当你正急匆匆地催你的慢性朋友去赶火车，他就可以回答"Why run?"跑什么。意思是不着急，时间还多着呢。
2、经营，运行。run one's own business 经营某人自己的事业
The radio was running well, you needn't worry about it. 收音机没问题，你不必担心。
You have to run your advertisement all week. 你整周都得登广告。
3、运转时间。in the long run 从长远来看
6、semester
这种表示"学期"的说法才是在口语听力中最为常见的。
I'm thinking of taking five courses next semester. 我在考虑下个学期选修5门功课。
学识谷
