2. 外语
  3. It is important to maintain a constant temperature inside the greenhouse. The underlined part means _____.

It is important to maintain a constant temperature inside the greenhouse. The underlined part means _____.

admin2017-06-17  56
问题 It is important to maintain a constant temperature inside the greenhouse. The underlined part means _____.
选项 A、prevent
B、regain
C、retain
D、repel
答案C
解析 考查动词词义辨析。maintain在此处的意思为“保持”，四个选项中，意思与之一致的是retain“保持，保留”。A. prevent“阻止”；B．regain“恢复”；D．repel“击退”。
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