问题
选择题
The world's population is getting larger and larger, so the scientists are trying to new ways to solve
the food problem. [ ]
A. devote to
B. pay for
C. come up with
D. catch up with
答案
答案:C
The world's population is getting larger and larger, so the scientists are trying to new ways to solve
the food problem. [ ]
A. devote to
B. pay for
C. come up with
D. catch up with
答案:C