单项选择题

The author would probably consider research about the effects noise has on people to be （）.

A. unimportant
B. impossible
C. a waste of money
D. essential

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单项选择题

What should the governments do to improve the present situation（）

A. The regional governments need to boost its social protection programs.
B. The regional governments put money on rural infrastructure.
C. Both A and B．
D. None of the above.

单项选择题

Which is the main idea of the passage（）

A. WHO raised the pandemic flu alert to level 6.
B. H1N1 spreads quickly around the world.
C. WHO requires all countries launch pandemic-prevention plans.
D. H1N1 is going to infect more and more people.