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  3. 　　There are three countries that have sent spacecraft to the moon, the U.S., Russia and the third which soft landed a rover ther

　　There are three countries that have sent spacecraft to the moon, the U.S., Russia and the third which soft landed a rover ther

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问题 　　There are three countries that have sent spacecraft to the moon, the U.S., Russia and the third which soft landed a rover there back in 2013 is China. But China hopes to become the first country to explore the dark side of the moon or the far side. The part never faces Earth. China has a mission plan this year, though a launch date hasn’t been announced yet. One problem with exploring the dark side of the moon is that there’s no easy way to communicate with whatever kind of vehicle people put there. The moon itself would block any signals coming from Earth. So to address that, China launched a satellite earlier this year that will hang out in the moon’s orbit acting like a relay station between the Earth and the new rover that China’s planning to send to the moon later this year. The country is a relatively late entry into space exploration. China didn’t send its first satellite into orbit until 1970. But over recent decades, it’s funneled billions of dollars into space research. It’s hoping to ultimately set up a base on the moon that’s run by robots. And it’s also setting its sights on Mars. China is hoping to send some spacecrafts there starting in 2020.
Why is it not easy to explore the dark side of the moon?
选项 A、The dark side is the farthest part from the Earth.
B、The moon will block any signals coming from Earth.
C、The dark side never faces Earth.
D、Have to launch a satellite that will hang out in the moon’s orbit.
答案B
解析 细节题。题干；为什么探索月球的背面并非易事?根据题干关键词not easy，the dark side of the moon定位到"One problem with exploring the dark side of the moon is that there’s no easy way to communicate with whatever kind of vehicle people put there. The moon itself would block any signals coming from Earth.(探索月球背面的一个问题是，和人类放置在月球背面的任何月球探测车进行联系并非易事。月球自身会屏蔽来自地球的任何信号)”，由此可知，人类探索月球背面比较困难的原因是月球会屏蔽来自地球的信号。故B项符合文意。A项“月球背面是离地球最远的地方”，在文中没有依据，故排除。C项“月球背面从不面对地球”，根据文章可知，这并非人类探索月球背面比较困难的原因，故排除。D项“必须发射一颗卫星到月球轨道上”，根据选项内容定位到“So to address that，China launched a satellite earlier this year that will hang out in the moon’s orbit…(因此，为了解决这个问题，中国在今年早些时候发射了一颗卫星到月球轨道上)”，由此可知，这是中国为了解决这一问题(即人类探索月球背面的困难)而采取的措施，不是原因，故排除。综上所述，本题选B。
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