Which of the following is the author’s main point? A.Noise may pose a serious threat to our physical and psychological health. B.Loud noises signal danger. C. Hearing loss is America’s number one nonfatal health problem. D.The ear is not like the eye.
Đáp án đúng: A Giải chi tiết:Đáp án A: Paragraph 1 defines noise pollution and its source. Paragraph 2 compares the ear with the eye in the reaction to danger. Paragraph 3 tells about the effects noise causes to an organism. In paragraph 4, more information about physical and psychological effects noise causes is presented. To conclude, the content is all about noise and its effects on health.