单项选择题

A．Professors are responsible for the cleaning work.
B．Professors are responsible for reminding students to behave well.
C．It is unusual that the lecture hall is mess.
D．Students are thoughtless
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environmental
单项选择题
A．It is said that they am more careful with smells.B．It is reported that they are more sentimental.C．It seems to be connected with hormones produced by women.D．It is linked with the substances in the T-shirts.
A．It is said that they am more careful with smells.
B．It is reported that they are more sentimental.
C．It seems to be connected with hormones produced by women.
D．It is linked with the substances in the T-shirts.
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