2. 外语
  3. Some crops are relatively high yielders and could be planted in preference to others to_____the food supply.

Some crops are relatively high yielders and could be planted in preference to others to_____the food supply.

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问题 Some crops are relatively high yielders and could be planted in preference to others to_____the food supply.
选项 A、enhance
B、curb
C、disrupt
D、heighten
答案A
解析 各项的意思是：enhance“提高，宣扬”；curb“制止，控制”；disrupt“打断，分裂”；heighten“使显著，加强”。根据句意可知，应选择A。
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