单选题 Scientists will have to ______ new methods of increasing the world"s food supply in order to solve the problem of famine in some places.

A、 come up for
B、 come down with
C、 come down to
D、 come up with

【正确答案】 D

【答案解析】[解析] 考查词组辨析。本句意为“科学家们将不得不想出新的办法来提高世界范围内的粮食供应，从而解决有些地区的饥饿问题”。正确选项come up with“提出，想出”。A．come up for没有此短语；B．come down with“因……病倒，染上(病)”；C．come down to“可归结为”。