Water which seems so simple and common is makes life possible.A. whatB. thatC. whichD. ho

问题补充：

Water，which seems so simple and common，is makes life possible.

A. what

B. that

C. which

D. how

答案：

A. what

B. that

C. which

D. how

解析：A

解析考查名词性从句的连接词。句意为：看似简单平常的水是使生命出现成为可能的东西。what引导表语从句并在句中作主语。