问题
选择题
______ 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
答案
答案：C
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。