2. 职称英语
  3. _____a living plant, animal, or bacterial cell, they make use of the host cell’s

_____a living plant, animal, or bacterial cell, they make use of the host cell’s

游客2025-02-04  44
问题 _____a living plant, animal, or bacterial cell, they make use of the host cell’s chemical energy.
选项 A、Viruses enter
B、Viruses entering
C、Do viruses enter
D、When viruses enter
答案 D
解析 The first clause needs a beginning. When viruses enter is a subordinator + subject + verb structure, which forms the beginning of an adverb clause.
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