That’s the new machine parts are too small to be seen.A. thatB. whichC. whoseD. What

问题补充：

That’s the new machine parts are too small to be seen.

A. that

B. which

C. whose

D. What

答案：

A. that

B. which

(答案→)C. whose

D. What

解析：考查定语从句。先行词为the new machine ， whose 作定语修饰parts 。句意：这是一台新机器，它的零件太小以至于不能被看见。故选C。