单项选择题

What remains an important factor for the rising number of road accidents

A．Highway crime.
B．Poor traffic control.
C．Confusing road signs.
D．Drivers’’ errors.
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单项选择题
What do we learn about prisoners in Britain
A．They are encouraged to do maintenance for the training centre.
B．Most of them get paid for their work.
C．They have to cook their own meals.
D．They can choose to do community work.
单项选择题
The man want to know________.
A．how long the show will last
B．how to avoid lead poisoning
C．how the skyscraper was built
D．how glass and crystal differ
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