(2012·衡阳高二检测) People often have the belief a healthy environment and development cannot be possible at the same time, but this does not have to be true.
A. that
B. which
C. where
D. what
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(答案→)A. that
B. which
C. where
D. what
解析：A 本题考查同位语从句。句意：人们经常有这样的信念，即健康的环境和发展不可能同事获得，但这不一定是真的。that引导同位语从句，解释说明belief的内容，从句中不缺少任何成分，应用that引导。