The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales’ ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected(被感染的).
Many researchers whose work depends on ocean sounds are against a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.
Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists don’t think that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the oceans.
61. According to the passage, which of the following is increasingly dangerous to sea creatures?
A. The sound of cars.
B. The sound of voices.
C. Man-made noise pollution.
D. The sound of steps.
62. Which of the following is discussed in the third paragraph?
A. The same noise level produces a different effect on land and in the ocean.
B. Different places may have different types of noises.
C. The decibel is not a right unit(单位)for measuring underwater noise.
D. Different ocean animals may have different reactions to noises.
【2017届高考英语一轮阶段评估检测5 必修5】相关文章:
★ 2017届江苏省高考英语一轮复习:必修5 阶段评估检测(牛津译林版)
★ 【人教版】2014届高考英语一轮复习指导考点针对练:必修2 unit3《Computers》
★ 【北师大版】2014届高考英语一轮复习指导课时作业:Unit 4 A卷 Word版含解析
★ 【浙江专用】2014届高考英语一轮复习课时作业(二十五)必修5Unit 5《First aid》
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (9)
★ 【北京专用】2014届高考英语一轮复习方案课时作业:必修4 Unit 3 A taste of English humour
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (73)
★ 湖南省汝城二中2014届高考英语一轮复习阅读训练 (58)
最新
2017-04-24
2017-04-24
2017-04-24
2017-04-24
2017-04-21
2017-04-21