A
The growing amount of human noise pollution in the ocean could make fish unable to find a good habitat and cause their death, according to a new research from a UK－ led team working on the Great Barrier Reef, the largest coral reef (珊瑚礁)in the world, off the northeast coast of Australia.
After developing for weeks at sea, baby reef fish rely on natural noises as a clue to find the coral reefs where they can survive and grow stronger.However, with human noise pollution from ships, wind farms and oil mining on the increase, researchers are now concerned that this important behavior is coming under threat.
Dr Simpson, a senior researcher in a British university，said, “When only a few weeks old, baby reef fish face a very difficult task in locating and choosing a suitable habitat.Reef noise gives them quite important information.But if they learn, remember and become attracted towards the wrong sounds, we might be leading them in all the wrong directions.”
Dr Simpson and his team began their environment.Using underwater light traps, Dr Simpson and his team collected baby reef fish and put them into tanks with underwater speakers playing natural reef noise or a mix of man－made sounds.The next night the fish were put into specially－designed choice tanks.Again they played natural or man－made sounds.All the fish liked the reef noise, but only the fish that had experienced the mix of man－made sounds swam towards it, the others swam away when hearing the man－made sounds.
The test result shows that fish can learn a new sound and remember it hours later.And they can tell the difference between sounds and, based on their experience, become attracted to other sounds, which might really affect their behavior on the most important night of their life.The breakdown of natural behavior could have damaging effects on the population of future fish groups.
文章大意：本文是一篇说明文。经英国科学家的研究发现，海洋中的噪声污染使生活在澳洲的小礁鱼很难找到适合它们的栖息地。
1．Baby reef fish find coral reefs mainly by their sense of__B__
A．sight B．hearing
C．smell D．touch
解析：细节理解题。根据文章第二段首句中的“...baby reef fish rely on natural noises a clue...”可知，小礁鱼主要靠听觉找到珊瑚礁。
2．What did the British research team feel most concerned about after the noise experiment？__C__
A．The reason why baby reef fish can find the location of coral reefs.
B．The process of how baby reef fish learn a new sound.
C．The population of fish groups in the future.
D．The eating habits of baby reef fish.
解析：细节理解题。根据文章第五段末句“The breakdown of natural behavior could have damaging effects on the population of future fish groups.”可知，通过噪音实验，科学家最为关心的是未来鱼群的数量问题。
3．We can infer from the passage that baby reef fish__D__.
A．can find their suitable habitat whatever happens
B．can survive in difficult living conditions
C．can get used to noise from humans
D．are easily attracted by sounds
解析：推理判断题。通过第五段第二句中的“And they can...become attracted to other sounds...”可知，小礁鱼的行为方式很容易受到其他声音的影响。故选D。
4．What does the passage mainly talk about？__D__
A．A new research about noise pollution.
B．A great task faced by a British research team.
C．The way baby reef fish survive and grow stronger.
D．A research about how noise pollution changes fish behavior.
解析：主旨大意题。本文主要讲述科学家发现噪声污染会改变小礁鱼的行为方式。故选D。
