单选题 Scientists will have to ______ new methods of increasing the world's food supply in order to feed more hungry people.
  • A. catch up with
  • B. come up with
  • C. keep up with
  • D. put up with
【正确答案】 B
【答案解析】[解析] 四个选项的意思分别是：catch up with赶上；come up with想出(答案、计划等)；keep up with跟上；put up with忍受。句意是，科学家必须要想出新的办法来增加世界的粮食产量，以满足越来越多的饥民的需要。所以正确答案是B选项。