What does the passage imply about a brown dwarf?.-考呗网题库移动版
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单选题 　　What does the passage imply about a brown dwarf?.

A．It's bright.
B．It's not very big.
C．It's not a planet.
D．It's huge.

参考答案B
解析: 本题考查对句意的理解。第一段第二句就提到科学家发现了a dark star，故排除A；第二段说Nemesis围绕太阳转，可见它是行星，故排除C；第六段提到，Nemesis是一颗矮行星——a star that neveraccumulated enough nlass，所以它并不大，故排除D。
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