2. 外语
  3. The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last May.

The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last May.

admin2012-01-05  37
问题 The country has already sent up three unmanned spacecraft, the most recent ______ at the end of last May.
选项 A、has been launched
B、having been launched
C、being launched
D、to be launched
答案B
解析 考查独立主格结构。题干已有谓语，且这个句子的前后两部分是由逗号隔开的，因此逗号后面部分不能出现谓语动词，可排除A。C项表示正在被发射，D项表示将被发射，与后面的时间状语不符，也可排除。B表完成、被动，符合题干。
转载请注明原文地址:https://kaotiyun.com/show/yp1K777K
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)