Exploring _____space is exciting, yet dangerous.
There is _____need for both robots and humans for space exploration.
A.the; aB.a(chǎn); aC./; aD./; the
C
該題考查冠詞的用法。本題中space是不可數(shù)名詞,此前不可加冠詞;need是可數(shù)名詞,此處表示泛指,所以要用不定冠詞。因此該題最佳答案是C。
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