单项选择题

A．Science benefits us but costs much.
B．Science harms us but brings about no benefits.
C．Science benefits and harms as well if out of control.
D．Science can help make Better swords.
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单项选择题
A．More than fifty percent.B．About forty percent.C．At least ten percent.D．Twenty or thirty percent.
A．More than fifty percent.
B．About forty percent.
C．At least ten percent.
D．Twenty or thirty percent.
单项选择题
A．The man should pay for the dinner.B．The woman is going to treat the man.C．They should go Dutch.D．The man should be more generous.
A．The man should pay for the dinner.
B．The woman is going to treat the man.
C．They should go Dutch.
D．The man should be more generous.
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