A recent study suggests that students who bring water into exams may improve their grades by 10 percent．

    Scientists then {#blank#}1{#/blank#} (比较) their exam results with their normal schoolwork grades．They found that all those {#blank#}2{#/blank#} had brought drinks with them got better grades．

    Scientists also considered the students 'schoolwork and {#blank#}3{#/blank#} (预计)their grades．This was to make sure that the reason was not simply that smarter students were more {#blank#}4{#/blank#} (有可能)to bring drinks with them．

    {#blank#}5{#/blank#} is unclear why drinking water improves exam results．But scientists say having enough water in our b{#blank#}6{#/blank#} and not feeling thirsty could have a helpful effect {#blank#}7{#/blank#} our brains．Drinking water may also cut d{#blank#}8{#/blank#} on anxiety ,which affects exam performances．

    So next time， w{#blank#}9{#/blank#} you are going to have a big exam，try bringing a bottle of water with you．Who knows—it may help you p{#blank#}10{#/blank#} the exam!

    In the business world, communication is necessary for the{#blank#}1{#/blank#}(success)daily operations.

    In some countries, like the United States and Germany,{#blank#}2{#/blank#}is common for people to speak loudly when sharing ideas or giving directions. However, in some countries like Japan, people speak softly when sharing idea or making {#blank#}3{#/blank#}(suggest). So when communicating with people from different cultures, speaking in a proper tone(So when communicating with people from different cultures, speaking in a proper tone(语气)can help develop smooth business communication.

    With the development of science and technology, people {#blank#}4{#/blank#}(easy)connect with others around the world in a moment's notice, but there are{#blank#}5{#/blank#}few rules to remember before {#blank#}6{#/blank#}(do) so. If making an international phone, people should say attention to the time zone differences and make sure to set a reasonable time for all parties to communicate. For example, many Spanish cultures have {#blank#}7{#/blank#}(long) lunch breaks than Americans. It {#blank#}8{#/blank#}(mean)that Spanish may spend a tie period eating, in{#blank#}9{#/blank#}the person you would like to meet with is unavailable. Asking for availability before making the call is the best way to avoid any confusion(困惑). Once you are able{#blank#}10{#/blank#}(connect), speak clearly and slowly.

    A mouse, because of a(n) {#blank#}1{#/blank#} (luck) chance, made close friends with an evil frog. One day, {#blank#}2{#/blank#} frog played a trick on the mouse by {#blank#}3{#/blank#} (tie)a foot of the mouse to his own. At first, both of them joined together and the frog led his friend toward the pool {#blank#}4{#/blank#} he lived, and didn't stop until he reached the side of the water. Then the frog {#blank#}5{#/blank#} (sudden) jumped into the water and the mouse {#blank#}6{#/blank#} (pull) in with him. The frog enjoyed {#blank#}7{#/blank#} (he) in the water, happily dancing and crying

    {#blank#}8{#/blank#}if he had done a great deed The unhappy mouse died soon in the water, and his dead body floated on the surface, {#blank#}9{#/blank#} (fasten) to the foot of the frog. A hawk saw the dead mouse, suddenly flew down towards, caught it and flew away. The frog, still tied to the foot of the mouse, was also carried off as a {#blank#}10{#/blank#} (prison), and he was eaten by the hawk.

Keep Your Eyes Open for Weight Loss Ads

    "In only six days I lost seven pounds of weight."

    "Two full inches in the first three days!"

    These are the kinds of statements {#blank#}1{#/blank#} (use) in magazine, newspaper, radio and television ads, {#blank#}2{#/blank#} (promise) new shapes and new looks to those who buy the medicine or the device. The promoters of products say they {#blank#}3{#/blank#} shape the legs, slim the face and smooth wrinkles. Often such products are nothing more than money-making things for their promoters. The results they produce are questionable, and some are dangerous to health.

    To understand how these products can be legally promoted to the public, {#blank#}4{#/blank#} is necessary to understand something of the laws covering their regulation. If the product is a drug, FDA(Food and Drug Administration) can require proof that it is safe and effective before it {#blank#}5{#/blank#}(put) on the market. But if the product is a device, FDA has no authority {#blank#}6{#/blank#} (require) premarketing proof of safety or effectiveness. {#blank#}7{#/blank#} a product already on the market is a danger to health, FDA can request the producer or distributor to remove it from the market voluntarily, or it can take legal action, including seizure(查封) of the product.

    One notable case a few years ago {#blank#}8{#/blank#}(involve) an electrical device called the Relaxacisor, {#blank#}9{#/blank#} had been sold for reducing the waistline. The Relaxacisor produced electrical shocks to the body through contact pads. FDA took legal action against the distributor to stop the sale of the device on the grounds {#blank#}10{#/blank#} it was dangerous to health and life.

    Flying cars may soon become a {#blank#}1{#/blank#} (real). The rideshare service Uber has asked {#blank#}2{#/blank#} expert from NASA, the American space agency, {#blank#}3{#/blank#} (help) the company develop cars that can fly.

    Uber plans to use flying vehicles {#blank#}4{#/blank#} the future to avoid traffic in and around cities. The company wants to use small, totally electric aircraft, {#blank#}5{#/blank#} could take off and land like a helicopter on top of parking garages. Uber said its flying vehicles would be much {#blank#}6{#/blank#} (quiet), cost less to operate and produce less pollution than helicopters.

    One person in San Francisco {#blank#}7{#/blank#} (write) on Twitter, "I used to think that flying cars was a ridiculous idea. {#blank#}8{#/blank#} I changed my mind this morning when I sat in a heavy traffic." Another person added from Mumbai, India: "I'm reading about Uber {#blank#}9{#/blank#} (hire) a NASA engineer to build flying cars, while Fm stuck in traffic. There is hope."

    The expert predicts there will be several early models of cars that can't fly {#blank#}10{#/blank#} (they) but with human pilots within one to three years.