The world’s population is getting larger and larger, so scientists will have to ______ new ways to solve food problem.
| A．catch up with | B．keep up with | C．come up with | D．make up with |
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单词辨音,找出下列单词黑体部分字母发音不同的选项
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The world’s population is getting larger and larger, so scientists will have to ______ new ways to solve food problem.
| A．catch up with | B．keep up with | C．come up with | D．make up with |
单词辨音,找出下列单词黑体部分字母发音不同的选项
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