The following is a poster. After reading it, you will find 3 questions or un

游客2023-10-02 78

问题 The following is a poster. After reading it, you will find 3 questions or unfinished statements, numbered 45 to 47. For each question or statement there are 4 choices marked A), B), C)and D). You should make the correct choice and mark the corresponding letter on the Answer Sheet with a single line through the center.

[br] Sneeze droplets could hang in the air for about______.

选项 A、19.68 feet
B、20 minutes
C、100 MPH
D、3 hours

答案 B

解析本题考查一滴喷嚏飞沫在空中停留的时间。图片中Did You Know?处列举了4条数字信息。其中Time sneezedroplets hang in the air所对应的数字为20Minutes。A)为喷嚏传播距离，C)为喷嚏速度，D)为手上的细菌的存活时间，故B)为正确答案。

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The following is a poster. After reading it, you will find 3 questions or un

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