单项选择题

Questions 14 to 16 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.
Radiation

A．is good for crops.
B．can poison food and water.
C．is harmful to man.
D．is useful to man.

<上一题目录下一题>

热门试题

单项选择题

单项选择题

Questions 14 to 16 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. Radiation 您的浏览器不支持 audio 元素。