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Taking a math test can be pretty stressful. Even if you know the material, you can still get the problem wrong. Knowing how to go through your math test and check your work can save you from handing in a test full of mistakes that can be avoided.    
Write it out
You can also check a math problem by writing everything out on paper.     Writing out math problems reduces your chances of missing anything to the lowest possible level, which is a common cause of incorrect answers.
  
Make sure your answers work by doing the opposite procedure of what your problem calls for, including the answer you got the first time around. In other words, you would use the opposite of this addition problem—subtraction (减法)—to determine whether or not your answer is the correct one.
Plugging in
You may find that a variable isn’t good enough or have a problem where you have to solve for a variable (变量).     This is the only real way to assure yourself that the answer you’ve found is correct.
Check for a reasonable answer
    For example, if you get an answer in the millions and you know it should be in the thousands, you’ve likely misplaced a point. Go back through the work on your paper to make sure all of your formulas (公式) and calculations are correct. If everything looks okay, do the problem again and compare the result of the second try to what you’ve got on the first try.

A.Do the opposite
B.Correct the answers
C.Therefore you’ll improve your grades, as well as your math skills.
D.Plug the variable in the equation (方程) to check it out.

E. If the result of a problem seems to make no sense, it indicates that the answer is incorrect.
F. It also helps you to figure out everything after you have already finished the test.
G. This helps you to know what information you have and what information you need to solve.

科目 英语   题型 信息匹配   难度 中等
知识点: 信息词选择
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No fight can end, and no friendship can move on, until everyone says these little words: I’m sorry. Sometimes, though, they can be difficult to say..
It’s not about winning.
Friendships aren’t like the Super Bowl, and there should never be a winner and a loser. When you start fighting with a friend, it may feel important that you “win” the fight by proving you’re right and he is wrong, or by making him be the first to apologize.

You may have heard the expression “His pride stood in the way.” It is usually used to describe a person who is so determined to be“right”that he lets an opportunity for happiness pass him by forever. Remember: as time goes on, we usually forget who was right and who was wrong in a disagreement, and only remember the sadness of losing a friend.
Take the first step.
Are you sick of fighting? Do you think this fight is just not important enough to ruin your friendship? You don’t have to take full responsibility for starting the fight, or even say that your feelings were wrong. But you should find something you did or said that’s worth apologizing for. Maybe you’re sorry that you let the fight go for so long, of that you overreacted(反应过度的) to something your friend did. If you say you are sorry, it’s like an invitation for your friend to do the same.

A.Then try to be the first to apologize.
B.Stop thinking about your pride.
C.It’s about taking some responsibility for the argument.
D.Don’t let this happen to a friendship you care about.

E.Here are some things to keep in mind.
F.There are some special cases when you shouldn’t be the one to apologize first.
G.Once you’ve both said it, you’ll both feel a million times better.

How to Make Friends
Friendship is a very important human relationship and everyone needs good friends. Good friendship has many benefits.It offers companionship, improves self-worth and promotes good health.There are times in our lives such as when we have recently moved into a new town, or changed our jobs or schools.Such changes often leave us without a friend. .But for many of us the process is difficult and requires courage.Below are some helpful suggestions on how to make and keep friends.
1.Associate with others.
The first step to making friends is associating with other people. You can go to public places to meet new people.Besides, you will need to make yourself known by becoming an active member of such places.
2.Start a conversation.
Starting a conversation is the second most important step in making new friends. . You can always start the conversation.Being able to make small talk is a very useful skill in relating with other people.
3. .
Choosing friends with common interests is important in building friendship as these interests would always bring you and your friend together. Hanging out will always be a pleasant experience.
4.Let it grow.
It is a good thing to stay in touch.However, try not to press your new friend with calls, messages or visits as this would likely wear him or her out and finally you may lose your friend.. The best friendships are the ones that grow naturally.
5.Enjoy your friendship.
The best way to enjoy your friendship is to allow your friends to be themselves. . Try not to change them from who they are to what you want them to be.Become the kind of friend you will want your friend to be to you.

A.Be cheerful.
B.Do things together.
C.Do not wait to be spoken to
D.Try not to find fault with your friends.

E. Making new friends comes easy for some people.
F. For a friendship to develop you need to stay in touch.
G. So you will need to give your friend time to react to you.

以下是一些新闻报道的信息:
[A]. Science magazine published the study about orangutans(猩猩). The scientists collected evidence from years of observations in six areas on Borneo and Sumatra. The scientists found that the animals demonstrated a total of twenty-four signs of cultural activity. Several actions were demonstrated in some orangutan groups, but not others.
[B]. The Environmental Investigation Agency and Telapak released the report. Telapak is an environmental group based in Indonesia. The Environmental Investigation Agency operates in several countries. The two groups say Indonesia controls ten percent of the world's tropical rainforests.
[C]. Richard Sandor is the chairman of the C-C-X. He praised the companies forming the group for demonstrating leadership. He said they believe that an active way to deal with global warning helps everyone. The group said its members want to reduce costs they may face from future rules on greenhouse gas emissions. Trading credits may help businesses find the most effective methods to reduce pollution. Members also hope to improve their public image on environmental issues.
[D]. Their most detailed effort involved ninety-nine kinds of birds, insects and plants in North America and Europe. They found that the territory where these plants and animals live has moved north by an average of six kilometers every ten years. In Europe, some butterflies now live as much as one hundred kilometers to the north because of changes linked to higher temperatures.
[E]. The new report says many areas experienced unusual weather in two thousand and two. Most of Asia, for example, was warmer than usual. India had unusually high temperatures in April and May. The extremely hot weather caused hundreds of deaths. There also were extremely dry conditions across India. Parts of Africa experienced unusual heavy rains. Yet other areas in Africa had unusual dry weather.
[F]. Hydrogen is the most common element in the universe. Hydrogen is a colorless gas. On Earth, it is present in large amounts in natural gas, coal, plants and water. By weight, hydrogen produces the highest energy levels of any known fuel. When burned in an engine, hydrogen releases no harmful pollution into the environment. When powering a fuel cell, the only waste is water. However, hydrogen is difficult to store. It also burns easily.
请阅读以下与新闻信息,然后匹配与上面新闻相关的报道内容:
1. A severe ocean storm hit South Korea in August. It set a new national record for rainfall. In central Europe, more than one hundred people died in flooding caused by heavy rainfall in September. The flooding also resulted in thousands of millions of dollars in property damage. Yet large parts of North and South America had extremely dry weather.
2. One member of the Chicago Climate Exchange is American Electric Power. It's the biggest owner of electric power producers in the United States. Company officials say they hope their company's membership will demonstrate the ability of the C-C-X to grow.
3. For example, members of some groups make a kissing noise by tightening their mouths and sucking in air. Some groups use leaves to clean themselves or protect their hands from sharp objects. The scientists found that some of the animals use sticks as tools to remove insects from holes in trees. Other orangutans use leaves to crush insects or gather water.
4. Professors Parmesan and Yohe used similar methods to examine one hundred and seventy-two kinds of wildlife. They examined the timing of events in the spring, such as the appearance of flowers and the reproduction of animals. They found that these events happened an average of two days earlier than normal every ten years.
5. They say illegal operations to remove trees are causing large areas of forest to disappear. Environmental Investigation Agency director Dave Currey says the illegal operations are completely out of control.

下面是上海博物馆展品的介绍,请阅读下列应用文和相关信息,并按照要求匹配信息。
A: A collection of over 3,000 pieces covers the history of the birth and development of Chinese currency. The ancient Silk Road coins record the economic history of those ancient nations along the Silk Road.
B: About 100 pieces of furniture illustrate the elegant simplicity of Ming style and the brilliant appearance of Qing style. A Mingstyle reception hall and a study, together with a set of furniture models unearthed from a Ming tomb, represent the household life of centuries back.
C: Beginning with the writing carved on oracle bones and bronzes, to the age of bamboo slips and stone steles (石碑), many masterpieces, including those by Wang Xizhi and Wang Xianzhi, present the interpretations of seal, official, running, cursive and regular scripts.
D: Long long rolls by masters from Tang, Song, Yuan, Ming and Qing dynasties are displayed in the showcases by the long corridor, unfolding the glorious history of Chinese painting.
E: Over 400 bronzes of unique shapes, delicate decor and excellent techniques tell you the 1500year history of the great Chinese Bronze Age from 18th century B. C. till 3rd century B. C.
F: About 120 statues in the gallery cover the development of Chinese sculpture art from the Warring States to the Ming dynasty. The Buddhist sculptures show how Buddhism confronted and harmonized with Chinese traditional culture over the history.
下面是部分参观者的信息,请为他们找到各自需要的展馆。
Liu Qiang is a middle school student, who is fond of art handwriting. He is curious about the development of all art handwriting in history.
Cha Leon is from Thai and he is a devoted Buddhism believer. He wants to learn what Buddhism has brought into Chinese culture, especially at an aspect of art.
Mr. Chang is a successful businessman. One of his hobbies is to collect house fittings in old look, especially beds, chairs or desks centuries ago. He won't lose a chance to appreciate such kind of things.
Mai Ya is studying in a university majoring in economy. Next week she will present her project with a lot of pictures of ancient money in her PPT, but she still needs to learn more about the money and the history period.
Xiao Yang is fond of fine art. He believes enjoying masterpieces is a shortcut for him to develop painting ability, and he is fond of Chinese traditional ones.

首先请阅读以下广告:
A. Want to keep abreast of the dynamic pulse of China’s economy? Get a glance at the most important business activities taking place here every day through Business Daily Update, a service offered by China Daily information via the World Wide Web.
B. Our present headmaster has reached retirement age and the board wants to carry out the replacement in 2011. If you are a qualified and experienced individual and have the vision, energy and enthusiasm to lead the school into a new era, please write for further information.
C. Want a Mini Cooper but can’t fit the family inside? Get one for the teens. They can jump into this Mini car, which comes in hot orange with a single adjustable seat, and ride away. But it could spoil them for that used car they’ll be driving.
D. National Institute of Physics, Durgapur, invites applicants possessing consistently good academic background, with commitment to quality teaching and potential for carrying out outstanding research, for faculty positions at the level of Professor, Assistant Professor and Lecturer in the Mechanics department. Interested candidates can apply at any time.
E. Today in business fast is no longer fast enough, even faster is still too slow to keep pace with the incredible demands placed on people and the computers they work with. That’s one reason why IBM developed P60/D. 60MHz 64-bit Pentium Chip computers so fast, so powerful.
F. If you want to be a success, the University of Waikato is right for you. We offer a wide choice of bachelor’s degrees for international students, including Arts, Communication Studies, etc. Tuition fees are different from department to department, generally from $5,000 to $6,000 a year. You can have a room in a 4-bedroom flat about $100 a month.
以下是个人的信息,请匹配他们最想了解的广告。
Austin E. Meredith, who graduated Northwest Normal university in 1985 and has worked for 14 years and now an expert in a research institute on morality and education in the city. He wrote several works concerning about psychological behavior, issues on educational management, etc. He’s a scholar full of creativity and passion.
Johnson Bolton, a professor of macroeconomics, is currently on a tour to Shenzhen, China and is due to give a lecture on the tendency of the world economy in Shenzhen People’s Auditorium soon. He’s keen on the information and news about the eastern world.
Luise Chen, a would-be Chinese senior high school graduate, is longing for a certain international higher education. She’s never been abroad and eagerly know something about international recognition, the degree, yearly tuition fees and accommodation.
Philip Wong, a young overseas Chinese as an engineer from a Singapore electronic corporation, has just arrived in Shenzhen for China Hi-Tech Fair, which is now the largest and most influential in China about technological and technical achievements covering trades, exhibitions, forums, technologies and investment projects.
Patrick Henry, an energetic teenager aged 16, feels like physics at school, fascinated with automotive vehicles. As a consequence, he teaches himself mechanics and learns to maintain machines timely.

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