单项选择题

The editorial criticizes a report issued by a US-Canadian "acid rain" ______ headed by Drew Lewis.

A．parliament
B．institution
C．panel
D．agency
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单项选择题
The parents who speak ______ may cause their children to become confused.
A．equivocally
B．angrily
C．abnormally
D．aggressively
单项选择题
The country's production dropped while prices and unemployed ______.
A．skyrocketed
B．outer-spaced
C．overestimated
D．under-questioned
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