单项选择题

How do students find out about water pollution

A．They consult pollution experts.
B．They collect water samples.
C．They conduct species surveys.
D．They read books on pollution.
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单项选择题
The topics of the Green EFL program probably will NOT include ______.
A．going on a diet
B．recycling
C．farm animals
D．jazz music
单项选择题
The aggressive act usually takes all of the following forms EXCEPT ______.
A．overeating
B．suicide
C．hitting back directly
D．displacement
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