2. 财经
  3. On December 14，NASA blasted a small but mighty telescope into space.The telescope is called WISE and is about as wide around as

On December 14，NASA blasted a small but mighty telescope into space.The telescope is called WISE and is about as wide around as

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问题 On December 14，NASA blasted a small but mighty telescope into space.The telescope is called WISE and is about as wide around as a trashcan(垃圾箱)．Don’t let its small size fool you：WISE has a powerful digital camera，and it will be taking pictures of some of  
It can be inferred from the last paragraph that brown dwarfs__________．
选项 A、give off infrared radiation
B、are power stars like the sun
C、become massive and active
D、are invisible to the WISE telescope
答案A
解析 根据最后一段“They’re so dim…but in the infrared spectrum tlaey glow”可得出答案。因此A项正确。
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