Question

【題目】Sound travels very well through water-much better, in fact, than it does through air. So it shouldn’t be surprising that many ocean animals make noise. They use sound to communicate and hunt. As biologist Brandon Southall says, “Their whole world is related to sound.”

Dolphins whistle, organizing hunts. Lovesick whales sing so loudly they can be heard hundreds of miles away. But these days they aren’t the only ones sounding off. They have more and more competition from human machines.

Every day, thousands of huge container ships sail across the world’s oceans. On top of the engine noise, the ships’ propeller (螺旋槳) make a loud noise all the time. All that can make it hard for ocean animals trying to listen out for friends, or dinner. Animals swimming nearby a ship can be deafened or even killed.

Underwater construction can also be dangerously loud. When construction machines called pile drivers were used during repairs to the San Francisco-Oakland Bay Bridge, dead fish appeared.

Geologist (地質(zhì)學(xué)家) pound on the seafloor too, trying to find oil wells and map Earth’s surface. The results are useful lo science, but all that hammering probably gives ocean animal a headache.

As people realize how important sound is to ocean animals, they are looking for ways to reduce human noise. Ships could get quieter just by slowing down. Engineers are also trying to find quieter propeller ships.

Now some companies are using a simple invention called a bubble curtain, which makes sound waves passing through it lose energy and gel quieter. It seems to work - when bubble curtains were fixed on the San Francisco bridge project fish deaths dropped.

We still have a lot to learn about sound in the oceans, but together we can help keep the sea a quieter place.

【1】Dolphins and whales arc mentioned to show .

A. sound travels very well through water

B. they are surprisingly noisy in the sea

C. the ocean is filled with sound

D. ocean noise is a big problem

【2】What is happening to ocean animals these days?

A. Human noise is causing danger to their safety.

B. There is less food in the ocean for them.

C. They are being killed in large numbers.

D. They are losing their hearing.

【3】During the first repair to the bridge, some fish .

A. started to die B. were attracted to it

C. got quiet underwater D. suffered from headaches

【4】Bubble curtains are used to .

A. research on fishes underwater B. build the San Francisco bridge

C. stop noisy machines working D. reduce construction noise

Answer 1

【答案】

【1】C

【2】A

【3】A

【4】D

【解析】文章主要講述了人類在海洋中制造的噪音對海洋生物有很大的危害，它影響了動物之間的交流，捕獵，所以現(xiàn)在一些公司正在使用一種叫做氣泡帷幕使聲波通過時失去能量，變得更安靜。

【1】細(xì)節(jié)理解題。根據(jù)“But these days they aren’t the only ones sounding off. They have more and more competition from human machines.” 但這些天，他們不是唯一的聲音了。越來越多的聲音來自于人類的機(jī)器�？芍�文中提及海豚，鯨魚是為了說明海中充滿了聲音。根據(jù)題意，故選C。

【2】細(xì)節(jié)理解題。根據(jù)“All that can make it hard for ocean animals trying to listen out for friends, or dinner. Animals swimming nearby a ship can be deafened or even killed.”這一切聲音使動物們很難聽到朋友們的聲音，捕食也會受到影響。在輪船附近游動的動物可能會變聾或者會死去。可知人類的噪音對動物安全造成危害。根據(jù)題意，故選A。

【3】細(xì)節(jié)理解題。根據(jù)“When construction machines called pile drivers were used during repairs to the San Francisco-Oakland Bay Bridge, dead fish appeared.” 在三藩奧克蘭灣大橋維修期間使用打樁機(jī)時，魚開始死亡。根據(jù)題意，故選A。

【4】細(xì)節(jié)理解題。根據(jù)“which makes sound waves passing through it lose energy and gel quieter.” 它使聲波通過它，失去能量，變得更安靜。根據(jù)題意，故選D。