Some scientists say that animals in the oceans are increasingly threatened by noise pollution caused by human beings.
The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.
Decibels（分贝）measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety-five would have the same effect.
Some scientists have proposed setting a noise limit of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales.
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.
Many researchers whose work depends on ocean sounds object to 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 suspect that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean. According to the passage, which of the following is increasingly dangerous to sea creatures?
| A．The man-made noises. | B．The noises made by themselves. |
| C．The sound of earthquakes. | D． The sound of the ice-breaking. |
Which of the following is discussed in the third paragraph?
| A．Different places with different types of noises. |
| B．The very human ears sensitive to all types of noises. |
| C．The ocean animals' reaction to noises. |
| D．The same noise measured differently on land and in the ocean. |
We can know from the passage that many researchers think that the noise limit of one hundred twenty decibels would _____.
| A．prevent them from doing their research work |
| B．benefit them a lot in their research work |
| C．do good to their health |
| D．increase the industrial output |
According to the passage, what will scientists most probably do in the future?
| A．They will try their best to decrease noise. |
| B．They will work hard to cut down noise pollution. |
| C．They will study the effect of different noises. |
| D．They will protect animals from harmful noises. |
I was driving home the other day on a sunny afternoon. I had a smile on my face as I sang along to the songs on the radio. It was such a beautiful day that I felt full of happiness. My good mood ended, however, when the radio station took a news break between songs. Then suddenly I found myself listening to yet another story of a rich famous man who had broken the law. I shook my head as I came to a red traffic light.
As I pulled to a stop I noticed four leatherjacketed bikers. They were standing in the middle of the road with two on either side of the light. They looked rough and dangerous, but as I got closer I noticed each one was holding their helmet in their hands. I rolled down my window as one approached my car. “We are the Brother of the Wheel，” he said. “We are collecting money for Christmas Toy Drive for needy children.” As I pulled a dollar out of my wallet I looked past his beard and into his eyes. They shined with goodness and kindness that came right from his soul. I dropped the money in his helmet and waved to the other bikers as I drove off. My good mood had returned. My faith in mankind had been bolstered. And I remembered once again never to judge people by their appearance.
Our society often judges books by their covers but God reads what is written in our hearts and souls. Perhaps one day we will all learn to see the world through the same eyes. Perhaps one day we will realize that looks matter little and actions matter much.The writer's good mood ended when ________.
| A．he heard a rich man broke the law |
| B．he had to stop at a red traffic light |
| C．he heard news between songs |
| D．he saw four leatherjacketed bikers |
What were the four bikers doing at the traffic lights? ________
| A．Raising money to help kids in need. |
| B．Selling helmets to the passersby. |
| C．Having a bicycle race in the street |
| D．Preparing for Christmas holidays. |
What does “bolstered” in the second paragraph probably mean? ________
| A．Destroyed. | B．Exploded. |
| C．Decreased. | D．Improved. |
The writer wants to tell us that we should ________.
| A．have faith in young people |
| B．manage to help others in need |
| C．change our attitude to society |
| D．judge others by their actions |
Eco City Farms are becoming more popular in cities and towns around the United States.
Eco City Farms in Edmonston,Maryland, is located near shopping centers, car repair shops and homes. The neighborhood is a workingclass community. People do not have very much money, and they have limited access to fresh food in markets.
Over the past two years, the farm has attracted volunteers from the community like Marcy Clark. She schools her four children at home. On a recent day she brought them to Eco City Farms for a lesson. Her son Alston Clark thinks his experience is very valuable. “I like coming out here，” he says, “You know, you connect with the earth, where your food comes from. You appreciate the food a little bit more.”
Margaret Morgan started Eco City Farms. She thinks of it as a place where people can learn to live healthier lives. “Growing food in a community brings people together，” she continues, “Every piece of what we do here is a demonstration to show people everything about how to have an ecofriendly community.” she says. From the Eco City Farms people come to know that they are not only growing food and raising chickens and bees, but improving the soil with compost (肥料) made from food waste.
Eco City Farms is an experimental operation. The farm gets its power not from the local electricity networks, but from the sun with solar panels. In winter, the green houses use a geothermal (地热) system.
Vegetables can be grown all year. So once a week, all winter long, neighbors like Chris Moss and her three children bike to the farm to pick up a share of the harvest.
“I like eating the vegetables，” says fiveyearold Owen Moss.What is mainly talked about in the passage? ________
| A．Eco City Farms save a lot of energy. |
| B．Eco City Farms helps the workingclass live better. |
| C．Eco City Farms are influencing community life. |
| D．Eco City Farms are gaining popularity. |
According to the passage, Eco City Farms are close to the following places EXCEPT ________.
| A．fastfood restaurants | B．car repair shops |
| C．shopping centers | D．workingclass community |
What is the author's attitude toward Eco City Farms? ________
| A．Surprised. | B．Disappointed. |
| C．Enthusiastic. | D．Doubtful. |
In which column of a newspaper can you most probably read this article? ________
| A．Environment. | B．Travel. |
| C．People. | D．Education. |
The way people hold to the belief that a fun-filled, and pain-free life equals happiness actually reduces their chances of ever attaining real happiness. If fun and pleasure are equal to happiness then pain must be equal to unhappiness. But in fact, the opposite is true: more often than not things that lead to happiness involve some pain.
As a result, many people avoid the very attempts that are the source of true happiness. They fear the pain inevitably(不可避免的) brought by such things as marriage, raising children, professional achievement, religious commitment (义务), self - improvement.
Ask a bachelor(单身汉) why he resists marriage even though he finds dating to be less and less satisfying. If he is honest he will tell you that he is afraid of making a commitment. For commitment is in fact quite painful. The single life is filled with fun, adventure, excitement. Marriage has such moments, but they are not its most distinguishing features.
Couples with infant children are lucky to get a whole night’s sleep or a three - day vacation. I don’t know any parent who would choose the word fun to describe raising children. But couples who decide not to have children never know the joys of watching a child grow up or of playing with a grandchild.
Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating realizations. It liberates time: now we can devote more hours to activities that can genuinely increase our happiness. It liberates （解放）money: buying that new car or those fancy clothes that will do nothing to increase our happiness now seems pointless. And it liberates us from envy: we now understand that all those who are always having so much fun actually may not be happy at all.According to the author, a bachelor resists marriage chiefly because _______ .
| A．he is reluctant to take on family responsibilities |
| B．he believes that life will be more cheerful if he remains single |
| C．he finds more fun in dating than in marriage |
| D．he fears it will put an end to all his fun adventure and excitement |
From the last paragraph, we learn that envy sometimes stems from ________ .
| A．hatred | B．misunderstanding |
| C．prejudice | D．ignorance |
What is the author trying to tell us?
| A．Happiness often goes hand in hand with pain. |
| B．One must know how to attain happiness. |
| C．It is important to make commitments. |
| D．It is pain that leads to happiness. |
When a rare disease ALD threatened to kill the four-year-old boy Lorenzo, his parents refused to give up hope. Doctors explained that there was no cure for ALD, and that he would probably die within three years. But Lorenzo’s parents set out to prove the doctors wrong.
The parents devoted themselves to keeping their son alive and searching for a cure. But doctors and the families of other ALD patients often refused to take them seriously. They thought the efforts to find a cure were a waste of time, and drug companies weren’t interested in supporting research into such a rare disease.
However, the parents still refused to give up and spent every available hour in medical libraries and talking to anyone who would help. Through trial and error, they finally created a cure from ingredients (调料) commonly found in the kitchen. The cure, named "Lorenzo’s Oil", saved the boy’s life. Despite the good results, scientists and doctors remained unconvinced. They said there was no real evidence that the oil worked and that the treatment was just a theory. As a result, some families with ALD children were reluctant to try it.
Finally, the boy’s father organized an international study to test the oil. After ten years of trials, the answer is: the oil keeps ALD children healthy.Doctors said that Lorenzo might die within three years because_____ .
| A．they had never treated the disease before |
| B．Lorenzo was too young to be cured |
| C．no cure had been found for ALD |
| D．ALD was a rare disease |
The families of other ALD patients thought that _____ .
| A．the research for the new cure would cost too much money |
| B．the efforts of Lorenzo’s parents were a waste of time |
| C．Lorenzo’s parents would succeed in finding a cure |
| D．Lorenzo’s oil was a real cure for ALD |
Scientists and doctors believed that Lorenzo’s Oil_____.
| A．was really effective | B．was a success story |
| C．only worked in theory | D．would save the boy’s life |
From the passage we can conclude that_____.
| A．doctors remain doubtful of the effectiveness of the cure |
| B．many ALD patients still refuse to use the oil |
| C．various cures have been found for ALD |
| D．the oil really works as a cure for ALD |
Do you know how to use a mobile phone without being rude to the people around you?
Talking during a performance irritates (激怒) people. If you are expecting an emergency call, sit near the exit doors and set your phone to vibrate (振动). When your mobile phone vibrates, you can leave quietly and let the others enjoy the performance.
Think twice before using mobile phones in elevators, museums, churches or other indoor public places—especially enclosed spaces. Would you want to listen to someone’s conversation in these places? Worse yet, how would you feel if a mobile phone rang suddenly during a funeral! It happens more often than you think. Avoid these embarrassing situations by making sure your mobile phone is switched off.
When eating at a restaurant with friends, don’t place your mobile phone on the table. This conveys the message that your phone calls are more important than those around you.
Mobile phones have sensitive microphones that allow you to speak at the volume you would on a regular phone. This enables you to speak quietly so that others won’t hear the details of your conversations. If you are calling from a noisy area, use your hand to direct your voice into the microphone.
Many people believe that they can’t live without their mobile phone. Owning a mobile phone definitely makes life more convenient, but limit your conversations to urgent ones and save the personal calls until you are at home.What should you do when you need to answer a phone call during a performance?
| A．Call back after the performance. |
| B．Answer it near the exit door. |
| C．Talk outside the exit door. |
| D．Speak in a low voice. |
Putting your mobile phone on a restaurant table may make your friends think_____.
| A．you prefer to talk to your friends at the table |
| B．you value your calls more than your friends |
| C．you are enjoying the company of your friends |
| D．you are polite and considerate of your friends |
When you are calling in a noisy area, you are advised to _____.
| A．use a more sensitive microphone |
| B．shout loudly into your microphone |
| C．go away quietly to continue the phone call |
| D．use your hand to help speak into the phone |
The author implies that the use of mobile phones in such places as museums should be_____.
| A．limited | B．expected |
| C．encouraged | D．recommended |