2. 专升本
  3. In recent years a number of communication satellites______into orbit about the earth.

In recent years a number of communication satellites______into orbit about the earth.

admin2014-01-01  86
问题 In recent years a number of communication satellites______into orbit about the earth.
选项 A、have been put
B、were put
C、had put
D、are put
答案A
解析
转载请注明原文地址:https://kaotiyun.com/show/KUFC777K
本试题收录于： 英语题库普高专升本分类
0

英语

普高专升本

相关试题推荐
随机试题
最新回复(0)