复句 A,in which B,at which C,by which D,from which1,Last October Ch_英语解答

复句 A,in which B,at which C,by which D,from which
1,Last October China launched its second manned spaceship
ShenzhouVI,___two Chinese astronauts traveled in space
for five days.
A,in which B,at which C,by which D,from which

人气：229 ℃　时间：2019-10-19 17:39:41

解答

C
in 为从句中修饰Chinese astronauts 和 which指代的manned spaceship 之间关系的必要介词
Chinese astronauts 不能 at,也不能 by ,更不能 from --manned spaceship
所以C