题目内容：

The world`s population is getting larger and larger,so scientists are trying to ______new ways to solve the food problem .
A catch up with
B keeo up with
C come up with
D make up with

优质解答

C

追问：

why？

追答：

come up with提出；想出

追问：

请问其三个选项（短语）何意？

追答：

catch up with赶上，追上；逮捕；处罚 keep up with赶得上；和…保持联系 make up with与…和解；和…和好如初