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单项选择题

The least serious damage caused by acid rain is _________.

A．poisoning of plant roots
B．leaching of heavy metals
C．changing the blood chemistry in
D．corrosion of metal structures

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单项选择题Why do the French workers prefer to be out of work rather than working just a few hours a day

A．Because they are willing to earn less money.
B．Because they have some measure of financial security.
C．Because the unemployment program pays them enough money.
D．Because there is nothing they can do about the situation.

单项选择题The most appropriate interpretation for the first two sentences in the fourth paragraph is that the French government _________.

A．does not take seriously the voters’concern for the declining family values
B．cannot offer any effective medicine to save the declining family values
C．has come to the end of its resources and is therefore desperate
D．pretends to be doing something good to make people accept its tight budget