单项选择题

What is the best title of the passage？（）

A．Problems Existing in the American States.
B．Working Conditions for VDTs Operators.
C．Health Dangers to Workers Using VDTs.
D．How to Protect the Pregnant Women.

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单项选择题

If the first high tide takes place at 1:00A．M., the next high tide will probably take place at （）

A．7:20 Ａ.M.
B．8:00 Ａ.M.
C．1:45 P.M.
D．high noon

单项选择题

A good title of the passage would be（）

A．Crime-Cycles
B．Summer Crimes
C．A Time for Murder
D．The Most Peaceful Month