单项选择题

A．At a shopping center.
B．At an electronics company.
C．At an international trade fair.
D．At a DVD counter in a music store.
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单项选择题
Why does the author say that public distrust of scientists can have damaging effects
A．It makes things difficult for scientists seeking research funds.
B．People would not believe scientists even when they tell the truth.
C．It may dampen the enthusiasm of scientists for independent research.
D．Scientists themselves may doubt the value of their research findings.
单项选择题
What do we learn from the passage about Afghanistan and Iraq
A．Al Qaeda terrorists had gained support from at least one of the governments.
B．9/11 was the chief reason for the Bush government to initiate both wars.
C．The two wars had already cost the Americans tens of millions of dollars.
D．These two countries should be held responsible for 9/11.
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