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【参考答案】

将difference改成differences。
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单项选择题
In the past two decades, the rate of birth defects in Shanxi Province is higher than the country’s average by__________.
A．0.3
B．0.5
C．0.6
D．0.8
单项选择题
The heavy rain and floods were responsible for all of the following except
A．displacement of people
B．transit stoppage
C．serious injuries
D．airport delays
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