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【单选题】
OR的计算公式为( )A.
IT一IO
B.
AD／BC
C.
IE—IO
D.
IE／IO
E.
( IE一IO)／IE×100％
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举一反三
【单选题】One of the most important weapons used during the second would war _______ not a weapon used against people, but rather a drug used against disease.
A.
is
B.
was
C.
were
D.
are
【单选题】听力原文：M: Is this the way to McGraw Books? W: Yes, it is. Turn left at the second avenue. Go about three blocks, and you will see the bookstore on your right. It's next to the post office. Q: What is th...
A.
A post office.
B.
A bookstore.
C.
A department store.
D.
A drug store.
【简答题】Directions: After reading the following passage, you will find 5 questions or unfinished statements, numbered 1 through 5. For each question or statement there are 4 choices marked A), B), C) and D). ...
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