Now it’s been possible for us to be taken into “space” we can experience weightlessness f

问题补充：

Now it’s been possible for us to be taken into “space”, we can experience weightlessness for a short time.

A. which

B. when

C. where

D. that

答案：

A. which

B. when

(答案→)C. where

D. that

解析：考查定语从句。定语从句we can experience weightlessness for a short time的结构很完整，所以使用关系副词，而先行词是space，使用where.