Snow falls in the Earth's extreme North and South throughout the year. However, the heaviest snowfalls have been reported in the mountains of other areas during winter. Snow is even known to fall near the Equator (赤道), but only on the highest mountains.

    Snow contains much less water than rain, but much of the water the world uses comes from snow. {#blank#}1{#/blank#} In the western United States, mountain snow provides up to seventy-five percent of all surface water supplies.

    Snowfall helps to protect plants and some wild animals from winter weather. Fresh snow is made largely of air trapped among the snow crystals (晶体). Because the air has trouble moving, the movement of heat is limited. {#blank#}2{#/blank#} The surface of the snow takes in, or absorbs, sound waves. As snow grows older or if there have been strong winds, it can become hard and flat. Then, the snow's surface will help to send back sound waves.

    {#blank#}3{#/blank#} It is responsible for the deaths of hundreds of people. Many people die in traffic accidents on roads covered with snow and ice or from being seriously stuck in the winter storm. {#blank#}4{#/blank#}.

    People may not be able to avoid living in areas where it snows often. However, they can avoid becoming victims of snowstorms. People should stop driving and stay at home until the storm has passed. People living in these areas should carry emergency supplies in their vehicle. {#blank#}5{#/blank#}

A. These include food, emergency medical supplies, and extra clothing to stay warm and dry.

B. Snow also influences the movement of sound waves.

C. Melting snow provides water for rivers, electric power stations and agricultural crops.

D. Mountain snowfall is heavier than that in the South and the North Poles.

E. In many places, streets were blocked; houses fell down and supplies were short.

F. Others die from heart attacks caused by too much physical activity out in the cold.

G. Snow may be beautiful, but it can be deadly.

    Kids' health: four steps for fighting stress

    Everybody gets stressed from time to time. {#blank#}1{#/blank#}some ways of dealing with stress— like screaming or hitting someone— don't solve much. But other ways, like talking to someone you trust, can lead you to solving your problem or at least feeling better.

    Try taking these four steps the next time you are stressed:

    (1.)Get support. When you need help, reach out to the people who care about you. Talk to a trusted adult, such as a parent or other relatives. {#blank#}2{#/blank#}they might have had similar problems, such as dealing with a test, or the death of a beloved pet.

    (2.)Don't take it out on yourself. Sometimes when kids are stressed and upset they take it out on themselves. Oh , dear, that's not a good idea. Remember that there are always people to help you. Don't take it out on yourself. {#blank#}3{#/blank#}

    (3.)Try to solve the problem. After you are calm and you have support from adults and friends, it's time to get down to business. {#blank#}4{#/blank#}even if you can't solve it all, you can solve a piece of it.

    (4.)Be positive. Most stress is temporary（暂时的）. Remember stress does go away, especially when you figure out the problem and start working on solving it.

    These steps aren't magic, but they do work.. and if you can stay positive as you make your way through a tough time, you'll help yourself feel better even faster. {#blank#}5{#/blank#}

A. Ask for a helping hand to get you through the tough situation.

B. Notice your friends' feelings and find a way to help them.

C. Different people feel stress in different ways.

D. Ah, it feels so good when the stress is gone.

E. You need to figure out what the problem is.

F. And don't forget about your friends.

G. Then, find a way to calm down.

    The Internet has opened up a whole new online world for us to meet, chat and go where we've never been before.

    But just as in face to face communication, there are some rules of behavior that should be followed when on line. {#blank#}1{#/blank#}  Imagine how you'd feel if you were in the other person's shoes. For anything you're about to send: ask yourself, “Would I say this to the person's face?” If the answer is no, rewrite and reread. {#blank#}2{#/blank#}

    If someone in the chat room is rude to you, your instinct(本能) is to fire back in the same manner. But try not to do so. {#blank#}3{#/blank#} If it was caused by a disagreement with another member, try to fix the situation by politely discussing it. Remember to respect the beliefs and opinions of others in the chat room.

    {#blank#}4{#/blank#} Offer advice when asked by newcomers, as they may not be sure what to do or how to communicate. When someone makes a mistake, whether it's a stupid question or an unnecessarily long answer, be kind about it. If it's a small mistake, you may not need to say anything. Even if you feel strongly about it, think twice before saying anything. Having good manners yourself doesn't give you license to correct everyone else. {#blank#}5{#/blank#} At the same time, if you find you are wrong, be sure to correct yourself and apologize to those that you have offended（冒犯）. It is not polite to ask others personal questions such as their age, sex and marital(婚姻的) status. Unless you know the person very well, and you are both comfortable with sharing personal information, don't ask such questions.

    The nervous-looking young man had waited for a few moments—outside the jeweler's before he got enough courage to enter. He was warmly greeted by a young assistant. James felt a rush of blood to his face as he explained he would be bringing in his future wife to choose a birthday present. The assistant listened carefully and told him he'd better buy a necklace. He wasn't used to buying jewellery and was a little worried about over-spending. After some discussion as to a reasonable price and the type, the assistant showed him dozens of necklaces and helped him to choose. At last James chose one and left the shop promising to return at five o'clock. When, half an hour later than planned, James did return to the shop with his future wife, Laura, the assistant acted as if she had never seen him before. When she was asked to show them some necklaces, she first brought out some inexpensive ones for them to choose, and then gave them the one she had prepared. A choice was soon made and they went away satisfied. James would certainly come back to buy what he wanted.

注意：每空一词。

    A recent study points out a so-called “gender-equality paradox(性别平等悖论)”: there are more women in STEM (science, technology, engineering, mathematics) in countries with lower gender equality. Why do women make up 40 percent of engineering majors in Jordan, but only 34 percent in Sweden and 19 percent in the U.S.? The researchers suggest that women are just less interested in STEM, and when liberal Western countries let them choose freely, they freely choose different fields.

    We disagree.

    From cradle to classroom, a wealth of research shows that the environment has a major influence on girls' interest and ability in math and science. Early in school, teachers, unconscious prejudice push girls away from STEM. By their preteen years, girls outperform boys in science class and report equal interest in the subject, but parents think that science is harder and less interesting for their daughters than their sons, and these misunderstandings predict their children's career choices.

    Later in life, women get less credit than men for the same math performance. When female STEM majors write to potential PhD advisors, they are less likely to get a response. When STEM professors review applications for research positions, they are less likely to hire “Jennifer” than “John,” even when both applications are otherwise identical—and if they do hire “Jennifer,” they pay her $4,000 less.

    These findings make it clear that women in Western countries are not freely expressing their lack of “interest” in STEM. In fact, cultural attitudes and discrimination are shaping women's interests in a way that is anything but free, even in otherwise free countries.

    “Gender-equality paradox” research misses those social factors because it relies on a broad measure of equality called the Gender Gap Index (GGI), which tracks indicators such as wage difference, government representation and health outcomes. These are important markers of progress, but if we want to explain something as complicated as gender representation in STEM, we have to look into people's heads.

    Fortunately, we have ways to do that. The Implicit Association Test (IAT) is a well-validated tool for measuring how tightly two concepts are tied together in people's minds. The psychologist Brian Nosek and his colleagues analyzed over 500,000 responses to a version of the IAT that measures mental associations between men/women and science, and compared results from 34 countries. Across the world, people associated science more strongly with men than with women.

    But surprisingly, these gendered associations were stronger in supposedly egalitarian (主张平等的) Sweden than they were in the U.S., and the most pro-female scores came from Jordan. We re-analyzed the study's data and found that the GGI's assessment of overall gender equality of a country has nothing to do with that country's scores on the science IAT.

    That means the GGI fails to account for cultural attitudes toward women in science and the complicated mix of history and culture that forms those attitudes.

    For thousands of young people everywhere，college means taking their first big step into adult life. What you do in your first year of college can have a big effect on the rest of your college years. Here are some tips of mine for you.

    Plan ahead. By the end of your first week, you'll know when you should finish each of your study tasks. Put those on your list. More importantly, you need to finish them on time. Start making good use of your time at the beginning of the term.

    Eat right. College students often gain weight in their first year. Without Mom and Dad planning your meals, it's easy to lose track of just how many calories you're taking in. Try to limit fast food and keep a varied diet.

    Talk to your professors. College students tend to be afraid of their professors. Don't be afraid. They're there to help you. Visit a professor during his or her office hours just to chat with him or her. Tell them about a book you have read，or ask for advice. And, of course, ask for help, whether with a difficult point in your readings or with big life issues (问题). If nothing of these, a professor can point you in the right direction to find the resources you need.

    Speak up in class. Ask questions, answer the professor's questions, and share your opinion as much as possible. There are no points for sitting quietly anymore.

    Go to the library. There are so many resources available in the library-- magazines, videos, and of course, the books you need for your papers. Learn as much as you can about your library .Talk with the librarians about the resources available in your field.