题目内容
Such __ medical equipment is in ____ danger of breaking down, if not taken good care of.
A.a; the | B.a; / | C./; the | D./; / |
D
解析

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题目内容
Such __ medical equipment is in ____ danger of breaking down, if not taken good care of.
A.a; the | B.a; / | C./; the | D./; / |
D
解析