单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. Why does breathing become difficult for humans during a tornado

A．The wind becomes fast and hot.
B．Air pressure gets steadily lower.
C．The black area moves closer.
D．They are knocked to the ground.

<上一题目录下一题>

热门试题

单项选择题

单项选择题

Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. Why does breathing become difficult for humans during a tornado 您的浏览器不支持 audio 元素。