单选题 The population will be increasing very fast unless they ______ with new methods to deal with it.
A. come to B. come away C. come over D. come up

【正确答案】 D

【答案解析】come to意为“达到，想起”；come away意为“走开，离开”；come over意为“过来，抓住”；come up意为“讨论，出现”。所填之词应该与with搭配，只有come up能够与with搭配，意为“提出或想出……方法、计划”。