单项选择题

A．if
B．unless
C．whether
D．whereas
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单项选择题
Which of the following is NOT the way to transmit HIV
A．Sexual contact.
B．Blood transfusion.
C．By toilet seats.
D．Pregnant woman to her fetus.
单项选择题
The so-called Parisian Golden Age ran roughly from the French Revolution to
A．1925.
B．1935.
C．1945.
D．1955.
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