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 enhance提高，促进，夸张，宣扬。curb制止，控制。disrupt打断，分裂。heighten使显著，变高，加强。

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