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[主观题]
To harvest the MSY, we should cut the stand of trees when ______ equals ______ of the stand.
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更多“To harvest the MSY, we should …”相关的问题
The harvest this year is ______ by too much rain.
A．influenced
B．effected
C．affected
D．interfered
To ______ an autumn harvest, local governments are trying their best to fight the flood.
A．assure
B．ensure
C．insure
D．sure
