Taking a math test can be pretty stressful. Even if you know the material, you can still get the problem wrong. {#blank#}1{#/blank#} Therefore you'll improve your grades, as well as your math skills.

    Write it out

    You can also check a math problem by writing everything out on paper. {#blank#}2{#/blank#} Writing out math problems reduces your chances of missing anything to the lowest possible level, which is a common cause of incorrect answers.

    {#blank#}3{#/blank#}

    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 your answer is the correct one.

    Plug in（代入）

    You may find that a variable isn't good enough or have a problem where you have to solve for a variable (变量). {#blank#}4{#/blank#} This is the only real way to assure yourself that the answer you've found is correct.

    {#blank#}5{#/blank#}

    If the result of a problem seems to make no sense, it indicates that the answer is incorrect. 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 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. Plug the variable in the equation (方程) to check it out.

D. Knowing how to go through your math test and checking your work can save you from handing in a test full of mistakes.

E. It also helps you to figure out everything after you have already finished the test.

F. Check for a reasonable answer

G. This helps you to know what information you have and what information you need to solve.

Taking Care of Your Health While Traveling

    When you're often on the go, it is likely that your health will suffer. Here are a few simple ways you can keep on top of your health.

    ⒈{#blank#}1{#/blank#}.

    When you're travelling, your body will quickly begin to wear down. How much is enough sleep? It all depends on your body-listen to it.{#blank#}2{#/blank#}. Although you want to experience as much as possible when travelling, it is still important to rest.

    ⒉Don't forget to take plenty of water.

    Carry a water bottle with you everywhere and keep it filled up with fresh water. {#blank#}3{#/blank#}, it will do your body a lot of good and keep you feeling your best.

    ⒊Eat healthier.

    {#blank#}4{#/blank#}. Yes, we get that you are on your holidays, but healthier choices will keep your body filled up with nutrients, which will make you feel better in the long-term.

    Make your own meals.

    Eating out each day isn't healthy for you so you should try and make your own meals where possible. {#blank#}5{#/blank#}, but making a few healthy sandwiches in your hotel room is something you should be doing.

A. Get plenty of good sleep

B. Take a break before you wear down

C. Try and cut out as much sweet as possible

D. If you pace yourself and go about things slowly

E. Even if you need to visit the bathroom more often

F. It is difficult to go to the bathroom when travelling

G. We're not talking about coking up a three-course meal

The Science of Risk-Seeking

    Sometimes we decide that a little unnecessary danger is worth it because when we weigh the risk and the reward, the risk seems worth taking. {#blank#}1{#/blank#} Some of us enjoy activities that would surprise and scare the rest of us. Why? Experts say it may have to do with how our brains work?

    The reason why any of us take any risks al all might have to do with early humans. Risk-takers were better at hunting, fighting, or exploring. {#blank#}2{#/blank#} As the quality of risk-taking was passed from one generation to the next, humans ended up with a sense of adventure and a tolerance for risk.

    So why aren't we all jumping out of airplanes then? Well, even 200,000 years ago, too much risk-taking could get one killed. A few daring survived, though, along with a few stay-in-the-cave types. As a result, humans developed a range of character types that still exists today. So maybe you love car racing, or maybe you hate it. {#blank#}3{#/blank#}

    No matter where you are on the risk-seeking range, scientists say that your willingness to take risks increases during your teenage years. {#blank#}4{#/blank#} To help you do that, your brain increases your hunger for new experiences. New experiences often mean taking some risks, so your brain raises your tolerance for risk as well.

    {#blank#}5{#/blank#} For the risk-seekers a part of the brain related to pleasure becomes active, while for the rest of us, a part of the brain related to fear becomes active.

As experts continue to study the science of risk-seeking, we'll continue to hit the mountains, the waves or the shallow end of the pool.

A. It all depends on your character.

B. Those are the risks you should jump to take.

C. Being better at those things meant a greater chance of survival.

D. Thus, these well-equipped people survived because they were the fittest.

E. This is when you start to move away from your family and into the bigger world.

F. However, we are not all using the same reference standard to weigh risks and rewards.

G. New brain research suggests our brains work differently when we face a nervous situation.

    Porridge doesn't have a very tasty name, does it? {#blank#}1{#/blank#}. I'm here to try and convince you that porridge can be a delicious, convenient and very healthy way to start the day.

    Porridge is a type of food served for breakfast, usually a type of grain with either milk or water. It is thicker than liquid, but not solid. {#blank#}2{#/blank#}, so it's a very good option for people who are ill, and it provides long-lasting energy for the day.

    Porridge preparation, such as the amount of materials and cooking time depends on what you choose to use as your porridge base. {#blank#}3{#/blank#}, I put a very big handful of oats (麦片) in a pot, add a little bit of water and about 200ml of milk, and let the mixture boil. It takes about five minutes to cook.

    Once it's cooked, the fun part is adding the flavors (味道). Porridge alone doesn't have a very strong flavour. {#blank#}4{#/blank#}, I think this is what makes porridge exciting! It is like a blank piece of paper-you can add almost anything you want to the porridge base. Seeds, nuts and dried fruits are very healthy options to add and can give you energy for the day. But if you don't like these, or you're allergic, then sugar and chocolate are also very tasty options.

    {#blank#}5{#/blank#}. Either oats or corn or both are "staple foods" for most people on the earth. You can usually buy big bags of either, then add local materials to make your porridge interesting-whatever is cheap and convenient to find, wherever you are.

Hopefully porridge sounds a lot tastier now!

A．If you've never eaten it

B．If I'm cooking for myself

C．The porridge base is very easy to digest

D．It doesn't have a very tasty reputation, either

E．It is often heated up but lacks all kinds of nutrition

F．You can make porridge almost anywhere in the world

G．Although some people think this makes porridge boring

    Before there was the written word, there was the language of dance. Dance expresses love and hate, joy and sorrow, life and death, and everything else in between.

    {#blank#}1{#/blank#}We dance from Florida to Alaska, from north to south and sea to sea. We dance at weddings, birthdays, office parties and just to fill the time.

    “I adore dancing,” says Lester Bridges, the owner of a dance studio in Iowa. “I can't imagine doing anything else with my life.” Bridges runs dance classes for all ages. “Teaching dance is wonderful. {#blank#}2{#/blank#}It's great to watch them. For many of them, it's a way of meeting people and having a social life.”

    {#blank#}3{#/blank#}“I can tell you about one young couple,” says Bridges. “They're learning to do traditional dances. They arrive at the class in low spirits and they leave with a smile. {#blank#}4{#/blank#}”

    So, do we dance in order to make ourselves feel better, calmer, healthier? Andrea Hillier says, “Dance, like the pattern of a beating heart, is life. Even after all these years, I want to get better and better.{#blank#}5{#/blank#} I find it hard to stop! Dancing reminds me I'm alive.”

A. So why do we dance?

B. Dance in the U.S. is everywhere.

C. If you like dancing outdoors, come to America.

D. My older students say it makes them feel young.

E. I keep practicing even when I'm extremely tired.

F. Dancing seems to change their feeling completely.

G. They stayed up all night long singing and dancing.

    Before visiting Stonehenge I didn't know much about it. I remember seeing photos in my textbooks and being interested in the large stone structure. {#blank#}1{#/blank#}

    My visit to Stonehenge made me understand more about it. Stonehenge is an important piece of prehistory that is just outside London, England, in Wiltshire. It is in the middle of a field. My arrival at Stonehenge was by car. {#blank#}2{#/blank#} When arriving at the museum you will not see the stones. They are about a mile away from the main museum building that you enter upon arrival. The museum exhibits(展览品) describing Stonehenge history are in this building as well. {#blank#}3{#/blank#} Then you will have a background on the history of the stones.

Then you will take a bus. The bus will drop you off outside the stones where you will take the path around the stones. The path is for tourists to view and walk through. Visiting the stones is quite a magical experience as you are viewing a piece of history that is over 5, 000 years old. {#blank#}4{#/blank#} It's hard to believe that the stones were brought from Wales —hundreds of miles away. It's interesting to imagine what the stones were used for. {#blank#}5{#/blank#} And the structure that is kept now is only a piece of the original(最初的) structure.

A. I suggest going through it first

B. Tickets are also a necessity for your visit

C. As time has passed many stones have fallen

D. This was probably the easiest way to get there

E. Then you can board the bus back to the main building

F. Once you start viewing the stones you realize how big they are

G. What is more interesting about Stonehenge is how it was built.