The world is not coming to an end on December 21st, 2012, the US space agency an

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The world is not coming to an end on December 21st, 2012, the US space agency announced to dispel （消除）widespread rumors fueled by the Internet and a new Hollywood movie．
The latest big screen 2012 was based on stories according to the Mayan calendar．It showed that by the end of 2012, a Planet X will collide （碰撞） with the earth．
Some websites accuse NASA of hiding the truth on the planet"s existence, but the US space agency considered such stories as tricks．"There is no basis in fact for these claims," NASA said in its website．"If such a collision were real, scientists would have been tracking it for at least the last decade, and we would see it with our eyes now．Obviously, it doesn"t exist and there will be no threat to the earth in 2012," it insisted．"After all, our planet has been getting along just well for more than four billion years," added NASA．
There is another planet, Eris, floating in space．But the small planet will remain safely fixed in the outer solar system and it can come no closer than four billion miles to the earth, according to NASA．
And even if the planets were to line up as some have forecast, the effect on our plant would be very little．"And while comets and asteroids （小行星） have always hit the earth, big hits are very rare," NASA noted．The last major collision was believed to be 65 million years ago, resulting the end of dinosaurs （恐龙）．
"We are sure that there are no threatening asteroids as large as the one that killed the dinosaurs," the space agency said．
小题1:What played a key role in the spread of the rumors?

A．The Internet and the film 2012．	B．The Mayan calendar．
C．The US space agency．	D．The television screen．

小题2:The underlined word "it" in Paragraph 3 probably refers to _________.

A．the collision

B．the threat

C．the Planet X

D．the NASA website

小题3:We can conclude from the passage that __________.

A．the film 2012 is well accepted in the science field

B．scientists have been tracking Planet X for over ten years

C．the earth will exist for more than four billion years

D．the rumors caused a panic among some people

小题4:What do we know about Eris according to the passage?

A．It doesn"t exist in the universe．

B．It won"t threaten the earth．

C．It is too far to be seen．

D．It is similar to the earth.

答案

小题1:A
小题2:C
小题3:D
小题4:B  

解析

试题分析：
小题1:细节题:从第一段的The world is not coming to an end on December 21st, 2012, the US space agency announced to dispel （消除）widespread rumors fueled by the Internet and a new Hollywood movie．可知是网络和电影起着重要作用。选A。
小题2:推理判断题：从第三段可知，如果碰撞是真的，科学家至少观察这个行星很多年了，并且我们用肉眼也能看见。所以it代指the Planet X，选C
小题3:推理判断题：从第一段的句子the US space agency announced to dispel （消除）widespread rumors 说明谣言已经造成了恐慌了。选D
小题4:推理题：从第四段的内容，可知Eris不会威胁地球的。选B 
点评：这篇文章讲诉大家恐慌的世界末日的谣言，用科学的道理帮助大家认清这只是谣言，不要恐慌。题目设置科学合理，考试要抓住主旨也不能忽视细节。