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【单选题】
下面哪一个公式用于计算感染率A.
（受检者中阳性入数／同期暴露人数）x100％a
B.
（受检者中阳性人数／受检人数）×100％
C.
（某一时期内新病例数／同期平均人口数）x100％
D.
（受检者中阴性人数／受检者人数）x100％B
E.
（受检者中阳性人数／同期平均人口数）x100％
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举一反三
【单选题】Where did the woman look up the information about new movies?
A.
On TV.
B.
In the newspaper.
C.
On the Internet.
【简答题】肝, 之官,谋略出焉; 心, 之官,神明出焉;脾, 之官,五味出焉;肺, 之官,治节出焉;肾, 之官,伎巧出焉。
【单选题】How did the woman obtain the information about arm exercises?
A.
By talking to an expert.
B.
By reading an article.
C.
By attending an exercise class.
D.
By listening to the radio.
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A.
They obtained the information by analyzing the blood proteins of individuals around the world.
B.
They obtained the information by analyzing the migration routes of individuals around the world.
【简答题】Although he's rich, he isn't very happy.
【单选题】I look forward from you as soon as possible.
A.
to hear
B.
to hearing
C.
of hear
D.
of hearing
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