2. 考研
  3. To ______ the world peace has been one of the most crucial functions of the United Nations since it was founded in 1945.

To ______ the world peace has been one of the most crucial functions of the United Nations since it was founded in 1945.

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问题 To ______ the world peace has been one of the most crucial functions of the United Nations since it was founded in 1945.
选项 A、sustain
B、maintain
C、contain
D、retain
答案B
解析 sustain意为“维持”，指继续生存；maintain意为“维护”，指坚持或保持； contain意为“包含”，指包括或由……构成；retain意为“保留”，指保持或维持在一个特殊的场所、条件或位置。所填之词的宾语是the world peace(世界和平)，所以应该选用maintain。
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