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单项选择题
For the impacts on agriculture and grain production in the world of climate change, which of the following options is wrong?
A．The adverse impacts on grain yield are more prominent than the positive impacts.
B．It has adverse influence on the yield of staple crops in the tropical and temperate regions.
C．Food security will face more serious threat.
D．The grain yield will increase significantly.
B．It has adverse influence on the yield of staple crops in the tropical and temperate regions.
C．Food security will face more serious threat.
D．The grain yield will increase significantly.
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