在整理问卷对量化资料进行分类编号时，所采用的分类间隔少比分类间隔多好。
参考答案：错
It was not ______she took off the glasses ________ I realized she was a famous film star.
A．when; that
B．until; that
C．until; when
D．when; until
对汞可监测功能的植物是（）。
A.女贞
B.向日葵
C.棉花
D.茉莉
