单项选择题

Many plants lie dormant throughout the whole winter.

A．temporally inactive
B．sleeping
C．unconscious

D．brown

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单项选择题

It is reported that the latest outbreak of the bird flu in Pennsylvania in the United States has prompted China to slap a ban on poultry imports from the state.()

A. marine products
B. dairy products
C. industrial products
D. avian products

单项选择题

Since the energy crisis, these big cars have become a real liability. They cost too much to run.()

A. lack of reliability
B. substitute
C. costly means of transport
D. disadvantage

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