单项选择题

The study also notes a steady decline in the number of college students taking science courses.（）

A．continuous
B．general
C．relative
D．sharp

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单项选择题
We explored the possibility of expansion at the conference.（）

A．offered
B．accepted
C．included
D．investigated
单项选择题
The high-speed trains can have a major impact on ourlives（）

A．effort
B．concern
C．problem
D．influence
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