All scientists subscribe {#blank#}1{#/blank#} the view that it is human activities that have caused the global warming. Huge {#blank#}2{#/blank#} (quantity) of carbon dioxide produced by burning fuels like coal,  natural gas and oil {#blank#}3{#/blank#} (result) in the "greenhouse effect". All scientists also agree that the levels of carbon dioxide keep on {#blank#}4{#/blank#} (increase), so more heat energy tends to be {#blank#}5{#/blank#} (trap) in the atmosphere. {#blank#}6{#/blank#} the scientists have different attitudes towards this phenomenon. On the one hand, some think the {#blank#}7{#/blank#} of increasing the temperature by 5 degrees would be a catastrophe. On the other hand, others are {#blank#}8{#/blank#} to this view and believe that there will be few bad environmental {#blank#}9{#/blank#} caused by more carbon dioxide. On the contrary, they think it will be beneficial to plants, crops and a greater range of animals, {#blank#}10{#/blank#} will make people's life better.

    In Africa, when the antelope（羚羊）wakes up every morning, the first thing {#blank#}1{#/blank#} comes into his mind is, “I must be able to run {#blank#}2{#/blank#} (fast) than the fastest lion,{#blank#}3{#/blank#} I will be killed by a lion.” And at just the same time, the lion{#blank#}4{#/blank#} (wake) out of his dream, and the first thingflashing into his mind is: “I must be able to catch up {#blank#}5{#/blank#} the slowest a ntelope, otherwise I will starve to{#blank#}6{#/blank#} (dead).” So almost at the same moment{#blank#}7{#/blank#} the antelope and the lion jump to their feet, and start{#blank#}8{#/blank#} (run) toward the rising sun.

    Such is life whether you are an antelope {#blank#}9{#/blank#} a lion, you ought to dash forward without hesitation when the sun {#blank#}10{#/blank#} (rise).

    Once there lived a rich man, {#blank#}1{#/blank#} wanted to do something for the people of his town. But first he wanted to find out {#blank#}2{#/blank#}they deserved his help.

    In the center of the main road into the town, he placed {#blank#}3{#/blank#} very large stone. Then he {#blank#}4{#/blank#} (hide) behind a tree and waited. Soon an old man came along with his cow.

    “Who put this stone in the center of the road？” said the old man，but he did not try to remove the stone. Instead, with some difficulty he passed around the stone and continued on his way. {#blank#}5{#/blank#} man came along and did the same thing; then another came, and another. All of them complained about the stone but not tried to remove {#blank#}6{#/blank#}. Late in the afternoon a young man came along. He saw the stone，{#blank#}7{#/blank#} (say) to himself: “The night will be very dark. Some {#blank#}8{#/blank#} (neighbor) will come along later in the dark and will fall against the stone.”

    Then he began to move the stone. He pushed and pulled with all his {#blank#}9{#/blank#} (strong) to move it，only to find a bag of money under the stone. Imagine {#blank#}10{#/blank#} surprised he was!

    When China's astronaut Zhai Zhigang carried out the spacewalk on September 27, he was wearing a spacesuit developed by Chinese scientists. Being worth more than 30 million yuan, the Feitian (飞天) spacesuit is not {#blank#}1{#/blank#}ordinary one.

    It {#blank#}2{#/blank#}（take）Chinese scientists four years to develop it. But what is special about the suit? First Let's take a look at why{#blank#}3{#/blank#}（astronaut） need to wear spacesuits.

    When you visit a world with little or no atmosphere, not{#blank#}4{#/blank#}(wear) a spacesuit, the following things would happen:

    You would become unconscious within 15 seconds because there is no oxygen.

    Your blood and body fluids(液体) would “boil” and then “freeze” {#blank#}5{#/blank#} there is little or no air pressure.

    You would receive various types of radiation.

    You could{#blank#}6{#/blank#}(hit) by dust or rock that moves at high speeds.

So, to protect you{#blank#}7{#/blank#}these dangers, a spacesuit must:

    Have a pressurized atmosphere;

    Give you oxygen;

    Keep a(n) {#blank#}8{#/blank#}(comfort) temperature;

    Let you see clearly and move easily.

    The Feitian suit did all that and what it {#blank#}9{#/blank#}（do）made it like a mini-spaceship in{#blank#}10{#/blank#}the astronaut stayed alive in outer space and carried out tasks.

    When Jennifer Lawrence tripped on her way to accept her best actress Oscar one year, her pink princess-like Dior dress {#blank#}1{#/blank#} (capture) in all its glory. The unscripted moment became hot topic throughout social media.

    That bonus air-time for a single dress at one of the world's global events is priceless for the likes of Dior, one of the {#blank#}2{#/blank#} (influential) fashion houses in the luxury marketplace.

    Success on the red carpet can earn exposure and profits for luxury brands for years {#blank#}3{#/blank#} (come). The red carpet, which will be televised live before Academy Award ceremony, presents a great opportunity for a designer to reach an audience that expands {#blank#}4{#/blank#} the fashion setting. The Lawrence dress received about 40 million mentions on various social media.

    One way of estimating the monetary benefits of having a standout dress on the red carpet is to compare how much a brand would otherwise spend on commercial advertising during the same time. {#blank#}5{#/blank#} Lawrence had only 75 seconds of solo camera time for her Oscar acceptance speech, Dior had to pay more than $4 million for a commercial spot of the same duration on similar occasions. And this didn't include the time {#blank#}6{#/blank#} (devote) to Lawrence and her dress on the pre-show televised red carpet. Lawrence, 23, had an advertising contract with Dior. {#blank#}7{#/blank#} the group's deal with Lawrence affected its sales was clearly stated in its annual financial report. That year, the group clothing section's profits {#blank#}8{#/blank#} (total)165 million euros, up 26 percent from the previous year.

    Heston, the founder of a publicity firm, {#blank#}9{#/blank#} success stories include introducing Jimmy Choo shoes and designer Saab to Hollywood, believes that the Oscar red carpet is today dominated by established luxury brands. Finding it much more difficult to compete with big brand names to dress super stars on big events, many young designers turn to {#blank#}10{#/blank#} (bet) on promising rising stars, expecting an overnight success if the young stars rise to sudden fame.

    You may not have noticed it before, but many people often sit with a hunched (驼背的) back when they are in a difficult situation, such as trying hard {#blank#}1{#/blank#} (solve) a math problem. But there's a reason for this: this body position helps to reduce pressure.

     However, according to Erik Peper, a health professor at San Francisco State University, poor posture (姿势) may make our brains work not as well as they {#blank#}2{#/blank#} (normal) do.

    Peper and a team of researchers {#blank#}3{#/blank#} (study) 125 students' performance in a math test and their different postures. The team found that good posture—for example sitting up straight—could help people perform better {#blank#}4{#/blank#} bad posture when they feel stressed.

    Another professor Richard Harvey further explained in Science Daily that sitting with bad posture might make us feel more {#blank#}5{#/blank#} (comfort), but it actually increases our pressure levels.

    So the next time you have to take a test, try sitting upright and taking a deep {#blank#}6{#/blank#} (breathe). If Peper's study is correct, this small change may have {#blank#}7{#/blank#} great influence on you.

    There are many things {#blank#}8{#/blank#} lead to poor posture. The good news {#blank#}9{#/blank#} (be) that posture can be improved at any age by {#blank#}10{#/blank#} (make) just a few simple corrections in the way one stands, sits and moves.