题目内容
Scientists will have to ________ new methods of increasing the world's food supply.
- A.come up
- B.come up with
- C.come over
- D.come across
B
come up with…提出……;come up走过来/(指某事)发生,如:Call me if anything comes up.C项中over为副词,表示“过来”,相当于up;D项意思为“偶然遇见”.
come up with…提出……;come up走过来/(指某事)发生,如:Call me if anything comes up.C项中over为副词,表示“过来”,相当于up;D项意思为“偶然遇见”.
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