2. 外语
  3. It is true that______a wild plant into a major food crop such as wheat requires much research time.

It is true that______a wild plant into a major food crop such as wheat requires much research time.

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问题 It is true that______a wild plant into a major food crop such as wheat requires much research time.
选项 A、multiplying
B、breeding
C、magnifying
D、generating
答案B
解析 动词词义辨析。句中能与a wild plant(野生植物)搭配的动词只有breeding(培养，养育)。故答案为B。
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