Some scientists say that animals in the ocean are increasingly threatened by noise pollution caused by human beings. Decibels measured in water are different from those measured on land. A noise of one hundred-twenty decibels on land causes pain to human ears. In water, a decibel level of one-hundred ninety-five would have the same effect. A team of American and Canadian scientists discovered that louder noises can seriously injure some animals. 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 . 31 According to the passage, which of the following is increasingly dangerous to sea creatures? B The sound of voices. D The sound of steps. A sounds made by animals themselves. C underwater earthquakes. 33 Which of the following is discussed in the third paragraph? B Different places may have different types of noises. D Different ocean animals may have different reactions to noises. A They wont be confused by noises. C Their ability to reproduce will be lowered by high-level noises. 35 According to the passage, what will scientists most probably do in the future? B They will protect animals from harmful noises. D They will study the effect of ocean noise pollution.
体坛英语资讯:Ghana coach calls for collaboration among national team trainers
国内英语资讯:Chinese foundation donates COVID-19 testing equipment to Greece
奇多推出有史以来最辣的口味,要不要试试?
体坛英语资讯:Dilemma for Kosgei to defend Chicago or London titles
跆拳道新教练
逛公园
国际英语资讯:Feature: Most cinemas, theaters, dance halls remain closed in Italy despite being allowed to
体坛英语资讯:CONMEBOL surprised by change to substitution rule
快来,打雪仗咯!
外婆家的三轮车
快乐的元宵节
想跟爷爷学写字
包饺子
国内英语资讯:North Chinas Hebei rushes to replenish Beijings vegetable supply
元宵节赏烟花
国际英语资讯:U.S. attempts to topple Iran nuclear deal illegitimate, have no prospects: Russian FM
换班
体坛英语资讯:La Liga players returning to training
科学家:儿童新冠肺炎症状较轻是因为常得感冒
刷过的故事
春天
读阿凡提有感
国际英语资讯:UN appeals for 390 mln USD to boost South Sudan response to COVID-19
小魔术
国内英语资讯:China calls for peace, stability on Korean Peninsula
秋天
读《小布头新奇遇记》有感
国际英语资讯:Spotlight: Turkey, Iran seek to bring ties back on track amid splits on regional issues
春天
北京市应急响应级别由三级调至二级
不限 |
英语教案 |
英语课件 |
英语试题 |
不限 |
不限 |
上册 |
下册 |
不限 |