Question

In order to _____ the rising production costs, the subscription rates have been increased.

A．add up to

B．look up to

C．come up with

D．keep up with

Answer 1

D

D.考查动词短语意识辨析。 keep up with跟上。add up to合计，总计是；;look up to赞美，尊敬；本题中rates意为“价格，费用”。come up with 提出，找到，产生。
依据句意“为了跟上生产成本的上升，预定费已提高。”故选D