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. {#blank#}1{#/blank#}

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 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). {#blank#}4{#/blank#} This is the only real way to assure yourself that the answer you've found is correct.

Check for a reasonable answer

    {#blank#}5{#/blank#} 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.

Testing the five-second rule

    You may have seen a friend drop food on the floor, pick it up, and eat it, while declaring, “Five-second rule! ” It's said that food dropped on the floor for five seconds or less is still likely to be clean. {#blank#}1{#/blank#}.

    Students at Britain's Aston University, led by microbiology professor Anthony Hilton, tested the rule and found it to have some scientific basis. The study's results show that food dropped for five seconds is less likely to contain bacteria than if it sits there for longer, according to Hilton.

    The students also found that the type of flooring where the dropped food lands has an effect. {#blank#}2{#/blank#} Bacteria are most likely to transfer from tiled (铺瓷砖的) surfaces to moist food when the food has stood there for more than five seconds.

    {#blank#}3{#/blank#} Therefore, consumers should still be cautious. “However, the findings of this study will bring some light relief to those who have been employing the five-second rule for years, despite a general consensus that it is purely a myth,” professor Hilton said in a statement.

    The research team at Aston also surveyed 500 people to find out who employs the five-second rule. Of the people surveyed, 87% said they would eat food dropped on the floor, or have done so in the past. {#blank#}4{#/blank#} “Our study showed people are also more likely to follow the five-second rule, which our research has shown to be much more than an old wives' tale,” Hilton says.

    Still, scientists say you should be careful about eating food dropped on the floor, especially if you have doubts about the cleanliness of the surface. {#blank#}5{#/blank#}

A. But is that true?

B. Carpeted surfaces posed the lowest risk.

C. Of those people, the majority were women.

D. We've just lost our last excuse to eat food off the floor.

E. Usually people recover from the infection in five to ten days.

F. There is still a risk of infection if certain bacteria are present on the dropped surface.

G. A biologist points out that one in six Americans get sick from food poisoning every year.

Why Do We Get Angry?

    Anger seems simple when we are feeling it, but the causes of anger are various. Knowing these causes can make us examine our behavior, and correct bad habits. The main reasons we get angry are triggering（触发）events, personality traits（特征）, and our assessment of situations. {#blank#}1{#/blank#}

    Triggering events for anger are so many that to describe them all would take hundreds of pages. However, here are some examples: being cut off in traffic, a deadline approaching, experiencing physical pain, and much more.{#blank#}2{#/blank#} The reason why someone is triggered by something and others are not is often due to one's personal history and psychological traits.

    Each person, no matter who they are, has psychological imbalances. People who have personality traits that connect with competitiveness and low upset tolerance are much more likely to get angry. {#blank#}3{#/blank#} Also, sometimes pre-anger does not have to do with a lasting condition, but rather a temporary state before a triggering event has occurred.

    {#blank#}4{#/blank#}Sometimes even routine occurrences become sources of pre-anger, or anger itself. Sometimes ignorance and negative (消极的) outlooks on situations can create anger.

    {#blank#}5{#/blank#}However, anger can easily turn violent, and it is best to know the reasons for anger to appear in order to prevent its presence. With these main reasons in mind, we can evaluate our level of anger throughout the day and prevent cases of outbursts by comprehending the reasons for our feelings.

A. Our attitude and viewpoint on situations can create anger within us as well.

B. But some types of situations can help us to get rid of the occurrence of anger.

C. Anger is rarely looked upon as a beneficial character trait, and is usually advised to reduce it.

D. Anger is a particularly strong feeling and maybe people think that they have reasons to feel angry.

E. Having these personality traits implies the pre-anger state, where anger is in the background of your mind.

F. Understanding these reasons will control our own anger if we are willing to evaluate ourselves with a critical eye.

G. Not everyone acts the same in response to events, and that is why what triggers one person may or may not trigger another.

    If you've ever had a nightmare (噩梦), you're not alone. {#blank#}1{#/blank#} A nightmare is a bad dream. It can make you feel scared, anxious or upset.

    Why do I get nightmares?

    Stressful things that happen during the day can turn dreams into nightmares. Nightmares may be a way to reduce the pressures of the day. Sometimes major changes can cause stress that leads to nightmares. Another thing that may cause nightmares is watching scary movies or reading scary books, especially before you go to bed.{#blank#}2{#/blank#}

    How can I prevent nightmares?

    Although it is normal to have a nightmare once in a while, there are some methods you can try to get nightmares under control.

    Get into a healthy sleep routine (习惯).{#blank#}3{#/blank#} Avoid eating or exercising just before bedtime. Avoid scary books or movies before bedtime.

    Use a nightlight. With a nightlight, if you awake from a nightmare, you'll be able to see familiar things and remember where you are.

    Keep your door open. {#blank#}4{#/blank#} If you are scared, get up and find someone for reassurance (安心). You're never too old for a hug!

    What if the nightmares don't go away?

    Most of the time, nightmares are not a big problem. It often helps to tell a trusted adult about your bad dreams. {#blank#}5{#/blank#} Sometimes it helps to keep a dream journal, a notebook in which you describe the dreams you can remember. If you have frequent nightmares, you and your parents might want to see a doctor to help you deal with your bad dreams.

A. You can go to bed about the same time and wake up at the same time every day.

B. Nightmares are not real and they cannot hurt you.

C. But sometimes you might have a nightmare for no reason at all.

D. This will help you remember that your family is close by.

E. The amount of sleep a person needs depends a lot on his or her age.

F. Just talking about what happened might make you feel better.

G. Almost everyone gets them once in a while --adults, as well as kids.

Five tips for safe running

    We all know that exercise is good for our health. But some kinds of exercise may be better than others. Running, for example, may help to protect against heart disease and other health problems.

    Running is good exercise, but it can be hard on the body. {#blank#}1{#/blank#}

    Take it easy. Do not run too much, too soon or too fast. Most people get running injuries when they push themselves too bad. The body needs time to get used to increases in distance or speed. {#blank#}2{#/blank#}

    Listen to your body. Most running injuries do not come unexpectedly. {#blank#}3{#/blank#} They may include body aches, sore muscles (肌肉酸痛) and pain that does not go away.

    {#blank#}4{#/blank#} There is no single best shoe for every runner. You should find the shoes that offer the best fit and support for your feet. More importantly, you should replace your shoes every 500 to 800 kilometers.

    Take good notes. Take time after each run to write down what you did and how you felt. Look for patterns, things that happen over and over again. These notes will help you find the best exercise for you.

    Cross train. As we said earlier, running is hard on your body. So physical fitness experts suggest some form of cross training to improve muscle balance and to help you stay injury free. They say swimming, yoga, and riding a bicycle are good exercises to combine with running. {#blank#}5{#/blank#}

Interview dressing tips for high school students

    Most high school job seekers aren't interviewing for professional jobs. Instead, they're usually looking for part-time jobs in shops, restaurants, or volunteering. {#blank#}1{#/blank#}. In fact, a teen would look pretty silly in an adult business suit.

    Here is a guide on what you should wear and shouldn't wear in an interview.

    Choose proper interview clothes

    When you're dressing for a job interview, your clothing should be in good condition, workplace proper.

    {#blank#}2{#/blank#}. Instead, try not to stand out, and fit into the office culture.

    Wear dress shirts and slacks (长裤)

    {#blank#}3{#/blank#}. Paired with dark slacks, it's a look that is mature (成熟的) and tasteful, but still comfortable.

    {#blank#}4{#/blank#}

    Just because high school job interviews are more casual(随意的), you don't have to rule out a tie!

    After all, looking a little dressed up doesn't hurt anyone. A tie can be a great choice for a young man, looking to make a good impression.

    {#blank#}5{#/blank#}

    You should avoid extreme hairstyles or colors. Also, keep makeup to the minimum. No jeans or shorts, or anything especially low cut or too short－keeping everything professional is a must.

A. No ties

B. What not to wear

C. A tie can make a great impression

D. It's a perfect time to find your own preference

E. It is not the time to show your unique style or personality

F. Accordingly, a teen's interview clothes don't have to be very formal

G. A simple dress shirt is a perfect choice for a high school job interview