When high temperatures are around the country, some things also go up. Here are four things expected to rise along with our desire to stay indoors and best the heat.

    ①Sales of goods that keep you cool.

    Malls are high on the list of places where people often go for free air conditioning outside home in summer.{#blank#}1{#/blank#}Goods related to keeping cool, like air conditioners, fans or sun care items, are very popular.

    ②{#blank#}2{#/blank#}

    Pests like stink bugs(椿象) grow fast during summer heat waves, and many agriculture experts are expecting a repeat of last year's incident that harmed fruit and crops, particularly on the East Coast.

    ③Energy bills

    {#blank#}3{#/blank#}With all those air conditioners and fans working, it makes sense that energy bills will be higher than average.{#blank#}4{#/blank#} “Not only are people going to have extremely high energy bills for July, it will also put increased stress on power plants, and we're going to see more air pollution because of it,” says Angela Fritz.

    ④Violence

    Heat waves may cause violence, right?

    Not necessarily, says Richard Larrick, a researcher. He took a unique look at the relationship between violence and heat through baseball. Larrick and his research team examined 57,294 Major League Baseball games taking place between 1952 and 2017 and found that while heat may increase violence, there always has to be a motive. “{#blank#}5{#/blank#}Instead, heat affects a specific form of violence,” he said.

A. Air pollution

B. Pest population

C. Rising heat is the expected response in any summer

D. Heat does not directly lend to more violence in general

E. More and more people are worried about their expenses

F. As more energy is used, air-quality problems may occur

G. So it's not a surprise that some sales jump during heat waves.

    Taking on a part-time job while pursuing a degree is hard work, but there are great benefits from that. Students with part-time jobs can eam their own money, develop good time-management skills, and gain experience in the workplace.

    {#blank#}1{#/blank#}As they come into adulthood, earning an income can increase their confidence. Some students need to work through school to afford tuition.{#blank#}2{#/blank#} Still, the money will be theirs to spend as they wish, and they may appreciate it more because they worked for it.

    Students taking on a job on top of their studies will have less free time than non-working students{#blank#}3{#/blank#} They learn to skip fun activities to finish their responsibilities. This prepares them for life after school when they can't find excuses for work that's not finished in time,

    Often, students take jobs that introduce them to their preferred career after school is over{#blank#}4{#/blank#} Even students who work in places not connected to their majors will look more impressive to potential employers. Employers look for employees who understand the work environment and work well as part of a team{#blank#}5{#/blank#}That will make it much easier for them to change their roles after leaving school.

A. Others will set the money aside to pay back student loans.

B. Other students may have to get help from their parents.

C. Students having part-time jobs usually get employed easily after graduation.

D. Having a part-time job helps students to get accustomed to the professional world.

E. They tend to be better planners as they make sure they complete every task on deadline.

F. Students who take part-time jobs will have more money than they would have otherwise.

G. This allows them to gain experience in the business and begin meeting people in that field.

    You'd think the human race would have understood sleeping very well by now, but many of us are still sleeping poorly. Part of the problem is that we have wrong information and beliefs about this important health need. Let's set the facts straight. {#blank#}1{#/blank#}

    ⒈More sleep is better for you.

    There could be such a thing as too much sleep. The amount of sleep we need varies by person and also changes as we age. Harvard researchers found that a lot of sleep (9 hours or more) is linked with poor sleep quality. {#blank#}2{#/blank#} Aim for better sleep.

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    Alcohol can help most people fall asleep. However, it also can cause you to wake up more during the night, decreasing your sleep quality. Consider drinking non-alcoholic drink before bed instead.

    ⒊If you wake up in the middle of the night, lie in bed until you eventually fall back asleep.

    {#blank#}4{#/blank#}We all hope to quickly fall back asleep. So we tend to stay in bed hoping it'll happen at any minute now. If that doesn't happen, though, within 15 minutes, most experts recommend getting out of bed to do something that occupies our bodies and brains without overstimulating us. Try not to check the clock either.

    ⒋You can catch up on sleep on weekends.

    When we lose sleep during the week, we accumulate a kind of sleep ＂debt＂. {#blank#}5{#/blank#}Not so fast. This might actually make you sleepier the next week. Instead of waking up later on the weekends, you'd better go to sleep earlier or perhaps take a nap in the afternoon.

A. Alcohol helps you sleep.

B. Here are some things you might have been told about sleeping but aren't completely true.

C. Everyone should get 7—8 hours of sleep per night.

D. So don't aim for more sleep — even on the weekends.

E. Waking up in the middle of the night is the pits (烦心事), but it happens to all of us.

F. You'll have a better day and perhaps sleep better at night.

G. Can you pay that debt back by sleeping on Saturday or Sunday?

    Every year, thousands of students choose to study in another country for a semester, the summer, or a year. Studying overseas can be an exciting experience for many people.

Why do you study overseas?

    Living in another country can help you to learn a language, and about another culture. You will see the world in a new way, and learn more about yourself. {#blank#}1{#/blank#} Many companies today want employees who speak a second language, or have experienced living or working in another country.

    Make the right choice.

    Once you decide to study overseas, you have to make some choices. To choose the right country or school, ask yourself: Where do I want to go and why? How much do I want to pay? How long do I want to study overseas? {#blank#}2{#/blank#}

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    Get your passport and visa (签证) early! Before you go, learn some of the language, and read about some common customs in your host country. {#blank#}4{#/blank#} Bring some of it, and a credit card with you.

    Once you are there.

    After the first few weeks overseas, many students will feel a little homesick. They may miss their family, and familiar ways of doing things. {#blank#}5{#/blank#} When you feel sad or homesick, try to talk to others, or write your feelings in a notebook.

A. Get ready to go.

B. Learn about the country.

C. Get quick access (进入) to foreign universities.

D. Overseas study may also look good on your future resume (简历).

E. Do I want to live with a host family, with roommates, or alone?

F. Remember that it takes time to get used to a new place, school, and culture.

G. As a study-abroad student, you will pay tuition fees (学费) to the overseas institution.

    To someone stuck in a traffic jam, the ability to fly right over other cars seems like a dream. {#blank#}1{#/blank#} That may be changing. Nearly a dozen companies around the globe are competing to be the first to develop a flying car. One of the ideas being developed is a car with wings that unfold for flight. But, most aren't cars at all. They are more like helicopters and are operated by a battery-powered motor.

    {#blank#}2{#/blank#} Companies have to convince the government that the flying cars are safe. They will also need longer-lasting batteries. And, cities will have to figure out how to handle thousands of flying cars in the sky.

    Still, some companies are moving forward. {#blank#}3{#/blank#} Especially as cities grow more crowded and people spend more time stuck in traffic. These taxis would deliver passengers to the rooftops of office buildings during rush hours.

    "In as little as 10 years, products could be on the market that revolutionize urban travel for millions of people," said Zach Lovering. He is the leader of a project to develop a self-flying taxi for Airbus, a European company that makes airplanes. {#blank#}4{#/blank#} Although Uber doesn't have any plans to develop a flying car itself, the company is advising several companies that are developing them.

    {#blank#}5{#/blank#} Designers think that if enough people want to buy them, prices can be kept affordable.

A. Some flying cars are designed for human pilots.

B. It's still unclear how much flying cars will cost.

C. They see a need for "air taxis" and personally owned flying cars.

D. Companies will also have to get permission from the government.

E. The Uber ride-share company sees air taxis as the future of on-call transportation.

F. Inventors and business people tried to make flying cars, but have never been able to.

G. There are many challenges that could keep flying cars from becoming part of everyday life.

    There are great health benefits from walking: slimmer waistline, better emotions, more focus, a stronger immune system and balanced blood levels. {#blank#}1{#/blank#}But walking with good habits will strengthen those benefits as well as avoid any injuries. Here are the ways on how to walk properly.

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    Although everyone has their own way of walking, certain common behaviors can improve almost everyone's walking experience. Chief among these is your posture(姿势).As you walk, keep your head upright, your back straight, and your chin up. Otherwise, bad posture can lead to back pain, an inflexible neck, and even more serious diseases.

    Add warming up

    Before your workout, make sure you stretch (伸展) muscles to avoid injury. {#blank#}3{#/blank#}Not only may you get injured, but it will also get you tired even quicker. Start with a walk at a normal pace and then slowly increase the pace.

    Swing your arms

    Don't hold your arms tight by your side. If so, it looks awkward and also limits walking pace. Your walking pace will become faster as long as you swing your arms. If weather permits, try to keep your hands out of your pockets. {#blank#}4{#/blank#}

    Time your walks

    When walking, the time you do so matters. Make sure you walk a few minutes after you eat, not immediately. That way, your body can still digest what you just ate before a workout. {#blank#}5{#/blank#}May it be 15-30 minutes every day, find time to walk and exercise, keeping your body active.

A. Relax before walking.

B. Stand straight while walking.

C. Don't go walking at a high speed immediately!

D. It's best to create a schedule suitable for your lifestyle.

E. In other words, walking can make you happier and healthier.

F. Doing so allows you to walk faster and farther than you would otherwise.

G. Having your shoulders pulled back makes you more confident and greater!