People often have this belief economic development is bad for the environment, but this does not have to be true.
A. what
B. which
C. that
D. when
网友回答
A. what
B. which
(答案→)C. that
D. when
解析：考查同位语从句。本句中的that引导的是同位语从句，解释名词the belief的内容。That在句中不充当任何成分，只起连接作用。句意：人们经常有这样的观点，经济发展对环境是有害的。但是这未必就是对的。故C正确。