Shenzhou VI Spacecraft ,____ by China itself ,has been sent up into space successfully.
问题描述：
Shenzhou VI Spacecraft ,____ by China itself ,has been sent up into space successfully.
A designing
B designed
C design
D to design
答
b
____ by China itself
现在分词/过去分词位于句尾,用逗号与前句隔开,作为状语修饰前句.
主语与该动词的逻辑关系为被动,则选b