2. 外语
  3. The following is a poster. After reading it, you will find 3 questions or unfinished statements, numbered 45 to 47. For each que

The following is a poster. After reading it, you will find 3 questions or unfinished statements, numbered 45 to 47. For each que

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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.

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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本试题收录于： 大学英语三级B级题库大学英语三级分类
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