【题目】完形填空
Hiking with some friends provided an opportunity to relax ourselves. Cold with a mixture of sun and snow1a quicker step on the mountain. On the way, we2a large troop of boy scouts and their families heading down as well. The majority of the troop was quickly well ahead and out of3.
Left behind were a boy and his mother who seemed uneasy. We slowed our4to talk with them before we 5passed them. They caught up again when my friend 6to tie her shoe. The boy at that moment fell down. My friend attempted to 7him as he rolled down the path.
Helped up, the boy was8, crying in his mother's arms. He said that his knee hurt and I could see the9spreading across the mother's face. I asked if I could help, with my friend explaining that I was a nurse. After a quick 10 I could tell that more than anything he was 11,his mom as well.12he stayed sitting, wrapped in his non's arms. Asking if they needed anything before we continued on, I turned to go leaving the13sitting on a rock.
I only took a few steps forward before14 that there was more that could be done .I15 to my friends for slowing them down, then turned and asked the boy and his mother if they wanted me to wait and hike down with them when they were 16.I could see the relief wash over the mother's face as she said “yes” and17stood to continue on.
The New England autumn had left the path 18with beautiful slippery leaves. So we went slowly, ensuring19footsteps. I realized that I was being gifted with more time to take in the20of the woods, conversation with friends and connections.
(1)A.encouraged B.controlled C.blocked D.stopped
(2)A.depended on B.came across C.looked after D.cared for
(3)A.sight B.balance C.breath D.touch
(4)A.vehicles B.acts C.pace D.race
(5)A.deliberately B.constantly C.absolutely D.eventually
(6)A.failed B.remembered C.sped D.paused
(7)A.follow B.lift C.catch D.miss
(8)A.nervous B.curious C.guilty D.lonely
(9)A.anger B.excitement C.regret D.panic
(10)A.glance B.examination C.chat D.measure
(11)A.pleased B.disappointed C.puzzled D.scared
(12)A.But B.So C.And D.Or
(13)A.team B.group C.pair D.crowd
(14)A.forgetting B.realizing C.reporting D.hoping
(15)A.shouted B.replied C.apologized D.promised
(16)A.ready B.thankful C.eager D.desperate
(17)A.almost B.even C.immediately D.gradually
(18)A.filled B.covered C.provided D.connected
(19)A.casual B.heavy C.quiet D.secure
(20)A.leaves B.beauty C.thickness D.colours

【题目】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 (螺旋桨) 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 (地质学家) 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.

1Dolphins 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

2What 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.

3During 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

4Bubble curtains are used to .

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

C. stop noisy machines working D. reduce construction noise

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