More than two _____ years ago, people knew little about the universe. [ ]A. thousandsB. thousand C.

题目简介

More than two _____ years ago, people knew little about the universe. [ ]A. thousandsB. thousand C.

题目详情

More than two _____ years ago, people knew little about the universe.
[     ]
A. thousands
B. thousand
C. thousand of
D. thousands of
题型:单选题难度:偏易来源:专项题

答案

B

更多内容推荐