题目内容
（请给出正确答案）
[主观题]
Symposium talks will cover （a wide range) of subjects （from) overfishing to physical and （
Symposium talks will cover (a wide range) of subjects (from) overfishing to physical and (environment) factors that affect the (populations) of different species.
A．a wide range
B．from
C．environment
D．populations
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