根据短文内容，从短文后的七个选项中选出能填人空白处的最佳选项。选项中有两项为 多余选项。
Does a Dog Help a Teen with Low Self-esteem?
A dog is known as man’s best friend for good reason. Loyal and affectionate ,a dog companion can enrich its owner’s life in many ways, 1_____ Many teenagers suffer from periods of low self-esteem (自尊）as they try to navigate the wavy waters of adolescence and deal with all of its associated highs and lows.
A teenager who lacks self-esteem may feel isolated from his peers and unable to tell his parents about personal issues. The company of a dog can be a huge comfort and ease feelings of loneliness and awkwardness. A dog offers genuine unconditional love. 2_____
All dogs need exercise，so taking his clog for a walk is the perfect opportunity for a teenager to get outdoors and benefit from fresh air and physical activity. Exercise allows people to take control of their bodies，which is often the first step toward regaining control of other aspects of their life，says mental health specialist Dr. Alan Cohen. 3 Exercise releases chemicals called endorphins (内排肽）into the brain? which create positive responses in the body ，including improved selfesteem.
Dogs can help teenagers be more sociable and make new friends, suggests HELPGUIDE. 4_____ A dog is a great ice-breaker ，avoiding awkward social situations and putting the teenager at ease with people he meets. The more confident the teen becomes when out and about with his clog ，the more his self-esteem will improve.
5_____ If a teenager is suffering from depression or developing dangerous habits such as alcohol and drug abuse ，more extreme action may be required. In these cases ，professional help should be sought and all treatment plans considered. Parents who suspect that their teen’s low selfesteem is a sign of a far more serious problem should ask a suitably qualified health professional for advice.
| A．In some cases, having a dog will not help with a teenager’s low self-esteem. |
| B．It simply accepts its owner for who he is and doesn’t judge, question or criticize. |
| C．Pets offer an unconditional love that can be very helpful to people with depression. |
| D．You don’t have to worry about hurting your pet’s feelings or getting advice you don’t want. |
E. In particular, someone with low self-esteem may find a pet dog to be extremely beneficial.
F. A teen may meet his peers while walking his dog in the park or taking part in a dog training class.
G. Many forms of exercise besides walking can be enjoyed with a dog, such as cycling, jogging and throwing a ball.
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
It’s summertime-time once again for mosquitoes to make their appearance. And once they appear, mosquitoes are a total pain. They land on you, bite you, suck out some blood and leave behind an itchy welt（发痒的红肿）.
1Female mosquitoes must find blood in order to reproduce, so mosquitoes come equipped with finely tuned sensors to help them locate the blood they need.
Mosquitoes’ weapons
Mosquitoes have perfected three different types of sensors. First, mosquitoes can sense several different chemicals. Mosquitoes can smell carbon dioxide and lactic acid（乳酸）up to 100 feet away. 2
Second, mosquitoes have very good eyesight. If you are wearing clothing that contrasts with the background, and if you move while wearing that clothing, mosquitoes can see you. It’s a good bet that anything moving is alive, and therefore full of blood.
Finally, mosquitoes come equipped with temperature sensors, so they can find warm-blood mammals and birds very easily.
3The female mosquito sticks her proboscis（喙）into you. She sucks about five microliters of your blood into her abdomen.
After she has bitten you, some saliva（唾液）remains in the wound. 4The area swells and you tich. Eventually, the selling goes away, but the itch remains until your immune cells break down the saliva proteins.
Our defense methods
Because mosquitoes are both a nuisance（讨厌的东西） and a danger, people prefer to stay away from mosquitoes. One way to do that is to use a chemical called DEET, which seems to black a mosquito’s chemical sensors. 5In some cities there are even trucks that drive around town to spray for mosquitoes. Finally there are to traps. The most popular traps turn propane（丙烷） into carbon dioxide and warmth to attract mosquitoes. Over time, by catching large numbers of mosquitoes, these traps can cause the collapse of the mosquito population in the area.
| A．Another way to control mosquitoes is with insecticides（杀虫剂） that kill them. |
| B．How mosquitoes work is unknown to most of us. |
| C．Once a mosquito lands on you, it is time to bite. |
| D．Some bites of mosquitoes are more serious than you thought. |
E. Mammals and birds give off these gasesas part of their normal breathing.
F. The proteins from the saliva create an immune response from your body.
G. But if you ignore the fact that mosquitoes are so annoying they really are amazing.
根据短文内荞，从短文后的选项中选出能填入空A处的最佳选项。选项中冇两项为多余选项。
Make the right choices
What is life’s greatest gift? ______ Choice is the ability to select one course of action from a set of alternatives to achieve a goal. What is so great about choice? It transforms us from dumb animals into artists. Each of us becomes another Michelangelo. Choice becomes nothing other than the tool we use to sculpt (雕刻）our life. The tool doesn’t come free, however, for the price of choice is responsibility.
______ The reward is happiness.
Life is not still. It is a flow. ______ We constantly need to monitor where we are on
our journey. We need to ask questions: Am I moving closer to my goals? If not, what corrective measures can I take? What action will I take now to readjust myself to my goals? Choice is power. Choice is at the heart of life. It is the creative power of life.______ And your life becomes more convenient or comfortable because of them. For example, you decide which stores to shop at and which gas station to go to. But the decisions that we make to sculpt our lives are far more important than deciding where to shop. The more we appreciate the difference between minor and major decisions, the greater the probability that we will experience happiness and fulfillment.
All chess lovers realize that it isn’t necessary to win to enjoy the game. The pleasure is in the playing. Life is like a chess game. ______
| A．It is free will or choice. |
| B．You have to make choices every day. |
| C．Make the best moves you can under the circumstances. |
| D．But when we accept and carry it out, we get a great return. |
E. Every choice we make leads us closer to or farther from our goals.
F. Life is full of hard choices, and the bigger they are, the harder they get.
G. Choose to carry out responsibilities not because you have to, but because you want to.
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，并将该项填写在答题卡指定的位置。选项中有两项为多余选项。We’ve worked to make their streets and their schools safer, to give them something positive to do after school and before their parents get home. We’ve worked to teach our children that drugs are dangerous, illegal and wrong.
Today, I want to talk to you about the historic opportunity we now have to protect our nation’s children from an even more deadly threat.Smoking kills more people every day than AIDS, alcohol, car accidents, murders, drugs and fires combined. Nearly 90% of those smokers lit their first cigarette before they turned 18. consider this: 3,000 children start to smoke every day illegally, and 1,000 of them will die sooner because of it.
For more than five years we’ve worked to stop our children from smoking before they begin to try, starting a nationwide campaign to educate them about the dangers of smoking to reduce their access to tobacco products, and to restrict tobacco companies from advertising to young people.
That means if we act now, we have it in our power to stop three million children from smoking and save a million lives as a result. So this is an emergency that needs quick action of all of you.
.
| A．Since I took office, I’ve done much to protect our children from harm. |
| B．This is a national tragedy（悲剧）that every American should help to prevent. |
| C．The quicker action we take, the fewer teen smokers there will be. |
| D．We have to educate them about the dangers of smoking. |
E．It is smoking that is more terrible than drugs.
F．Compared with other diseases, drugs kill more people every day.
G．If we do these, we’ll cut teen smoking by almost half over the next five years.
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。
William Shakespeare once wrote, “Better three hours too soon than a minute too late.” While this may be a stretch, the principle is correct. 1
Throughout your life, you will encounter similar circumstances that require punctuality, such as handing in homework assignments; arriving at school, a job or a meeting; picking up someone from the airport, school, work, etc. avoid embarrassing moments by ridding yourself of any tendency to be late.
Here are some tips:
● Learn to manage your time wisely, which includes setting deadlines. There are a fixed number of minutes in a day---and only one of you. 2
● 3This ensures they do not assume that you will be available for other projects.
● Procrastination(拖延) is a thief of time---avoid it at all costs! This includes waiting until the last second to start a task simply because you find it unpleasant.
4Worrying about it will not accomplish anything!
● Before agreeing on a particular time for something, think about other events that might interfere.
● Try counting back from the scheduled time to figure out when you should begin getting ready. 5For example, if you are scheduled to be at work at 9:00 a.m., a 30-minute car ride makes it 8:30, 15 minutes to eat breakfast makes it 8:15, and 30 minutes for grooming(洗刷) makes it 7:45, and so on.
| A．If a task is difficult, do it first. |
| B．It is always better to be early rather than late. |
| C．Make sure others are aware of your deadlines. |
| D．A few minutes delay may not be a serious matter. |
E. Moreover, habitual unpunctuality leads to indolence (懒散) and even failure in life.
F. Do not worry about the particular order of events; just assign(分配) time values to each.
G. Taking on too many responsibilities means that something will not be finished on time.
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
This report presents details of home computers used by a random sample (随机抽样) of young people. It is a common idea that teenagers today know about computers and know how to use them in all aspects of their lives. We decided to try to find out whether that was true.All the teenagers we chose said they had computers at home. We asked them how much time they spent on their computers in an average week, but we were most interested in what they used their computers for. The average time spent on a computer in a week was about 12 hours, with the highest user averaging 32 hours and the lowest user only 5 hours.
Fourteen teenagers told us they did some word processing at home, but not very much. Only 2 of them said that computers helped them with their studies, while 8 of them told us they kept addresses and telephone numbers on their computers or used them as diaries. Only 3 of them said they were learning to program computers, and nobody looked up information (other than their address lists).
The results indicate quite clearly that computers are seen by most young people as little more than game machines. It seems to us that, although computers are common in the homes of teenagers, they have not yet become useful tools in everyday life.
| A．There no big difference between boys and girls. |
| B．All of the teenagers questioned said they regularly used to play games. |
| C．We questioned thirty young people between 14 and 18. |
| D．But some adults admitted that they had no computers at home. |
E. None of them used their computers for any other purpose.
F. I don’t know how important a computer is for teenagers.
G. The other important users are for word processing and organizing address lists.