The result of the experiment was very good 　we hadn’t expected.A. asB. thatC. whichD. wha

问题补充：

The result of the experiment was very good, we hadn’t expected.

A. as

B. that

C. which

D. what

答案：

A. as

B. that

(答案→)C. which

D. what

解析：考查定语从句。在非限定性定语从句中，指物的引导词只能使用which，结合语境可知本句引导词指代前文整句话内容，故选C。