◎ 题干
Exploring ________space is exciting, yet dangerous. There is ________need for both robots and
humans for space exploration.
[     ]
A. the; a  
B. a; a    
C. /; a  
D. /; the
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“Exploring ________space is exciting, yet dangerous. There is ________need for both robots and humans for space exploration. [ ]A. the; aB. a; a C. /; aD.…”主要考查了你对  【不定冠词】【零冠词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。