is amazing to us is some plants can sense the soft touches of the insects on the leaves.
A. That; that
B. What; what
C. What; that
D. That; what
网友回答
A. That; that
B. What; what
(答案→)C. What; that
D. That; what
解析：考查名词性从句。第一个what引导主语从句，在从句中作主语，第二个that引导表语从句，从句不缺少成分，选C。