The principal reason for the great number of smoke is that there are too many fa

游客2025-03-18 31

问题 The principal reason for the great number of smoke is that there are too many factories in this area.

选项 A、principal
B、number
C、that
D、too many

答案 B

解析应改为amount，因为smoke不能用number来计算。本句的意思是：“大量烟的首要原因是在这个地区有太多的工厂。”

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Treesshouldonlybepruned(修剪,整枝)whenthereisagoodandclearreasonf