Spell checks are turning us into a nation of idiots with a third of adults failing to reach the expected spelling ability of an 11-year-old child,a shocking study shows.

    A survey involving 1,000 adults aged between 16 and 77 found that 67 percent would reach Level 4 in Standard Assessment Tests (ASTs),while less than half (44 percent) would achieve Level 5.Fifteen percent of the adults tested even failed to reach Level 3,which is below Level 4—the expected level of children at age 11.Experts blamed the poor showing of the adults on the popularity of tools such as spell check and auto-correct,which both play an important role in modem-day living.

    The study asked adults to complete Key Stage 2 spelling tests designed to judge the performance of children aged 10 and 11,as they reach the end of primary school.But the test spelled trouble for many of the adults tested.The study was charged by King Digital Entertainment,makers of popular mobile games such as Candy Crush.People taking part in the test were asked to spell 35 different words taken from SATs spelling papers from the past three years.In a test which imitated real exam conditions."Phenomenon" and "unnecessary" were among the words spelled wrong by more than half of those participants.Other words which fewer than half were able to spell included rhythmic (42 percent) and jewellery (49 percent).

    Susie Dent.Lexicographer（字典编纂者）and resident word expert on TV show Countdown,believed the results were partly down to the popularity of tools such as spell check and auto-correct.She said,"Tho result is disappointing. It suggests that the ability to spell is losing its importance in our daily lives.Modem tools like spell check and auto-correct encourage us to switch off from learning,leading to satisfaction or,at worst,indifference."

阅读短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Human beings are the most intelligent of all animals because we are gifted with the ability to think and reason logically. Scientists and even common people with special intelligence have made a lot of inventions and contributions to modern lifestyle in the past. “Houses” have been the most popular area for discoveries and inventions in the past and even now.

    Many household items have been the result of inventions of people who desired better functioning of the existent products. Every individual has intelligence and if it is used properly for the right purpose it leads to invention of a new tool or device. Many new household inventions are made almost every day and there are specific companies, which particularly keep a record of all these inventions.

    A lot of inventions have been made recently in the household field. These products are patented(专利的) and have trade mark licenses. The patented sliding cinch is a very simple but effective method to prevent shoulder stress and injury for those who work before computers all day long. Vanity PC is a type of computer furniture that specifically hides all the computer wires and keeps a clean and good look. All the outdoor dust, mud and snow can be kept out of the house by installing(安装) the dirt drain(排水管) at the entrance of the door. Another important invention is the automatic toilet night-light, in which a small light starts when the lid of the toilet seat is opened and closes as soon as the lid is closed.

    These are some of the new household inventions invented mostly by common people. Thus, a variety of new household items are invented every day, which helps in a better functioning of household chores and in a more useful manner.

    Scientists are using robots to study the health of waters in and around Venice, Italy. The robots are designed to act like fish, other underwater creatures and plants. The scientists are working with several universities and research centers as part of a group called subCULTron. The European Union gives money to the project as part of its Horizon 2020 program whose aim is to take great ideas from the lab to the market and support science and innovation (创新) in Europe. The scientists want to use the artificial intelligence of the robots to help humans understand what is happening under the water of the Venice lagoon (潟湖).

    SubCULTron, a collective artificial intelligence project, plans to create the biggest shoal (鱼群) of robot fish in the world. The project's aim is to improve knowledge of the seabed and try to turn human abilities into hi-tech items.

    Alexandre Campo, a computer scientist, says the scientists have looked at the way animals learn to work in groups to understand how robots can learn to work together. The subCULTron project wants its robots to learn to work together so they can watch out for changes and new problems in the water.

    One problem the researchers had in the beginning was how the robots would communicate with each other. Wi-Fi and GPS equipment don't work underwater. Instead，the robots can use sonar (声呐) and an electric field.

    Another problem was charging batteries. The robots come up to the water's surface and stay near a boat or a power station to charge without any electrical cables. Besides, how to be water- proof, especially for some key pads of the robots, was really tough. Fortunately, a special mixture has been created to be pinned on the robot, which successfully stands the test of water.

    The health state of the lagoon is pretty good. There are no industrial polluters, and the city now has a modem sewer (污水管) system. It's not like before when all the waste flushed directly into the water. The robots in Venice will continue their work until 2019. The subCULTron project hopes they develop into “an artificial society underneath the water surface” that serves “a human society above the water”.

    It is a question people have been asking for ages—is there a way to turn back the aging process?

    For centuries, people have been looking for a "fountain of youth." The idea is that if you find a magical fountain, and drink from its waters, you will not become old. Spanish explorer Juan Ponce de León searched for waters with magical powers in the early 1500s. But what he found instead is the American State of Florida.

    Researchers in New York did not find a fountain of youth in fact, but they may have found a way to turn back the aging process. It appears the answer may be hidden right between your eyes, in an area called the hypothalamus (丘脑下部).The hypothalamus is part of your brain. It controls important activities within the body, including growth, reproduction and the way we process food.

    Researchers at New York's Albert Einstein College of Medicine found that hypothalamus stem cells also influence how fast aging takes place in the body. What are stem cells? They are simple cells that can develop into specialized cells, like blood or skin cells. Stem cells can also repair damaged parts in the body.

    Professor Dongsheng Cai was the lead researcher in a study on aging in mice. Cai explains in the Journal Nature what they found. "Aging speed can be controlled by a particular place in the body, which is the hypothalamus. And it can be controlled by a particular type of cells, which are hypothalamus stem cells. I think these findings are quite interesting."

    He adds that when the hypothalamus starts aging, so does the body. "So when hypothalamus function is decreasing, particularly the loss of hypothalamus stem cells, this protection against the aging development is lost. It finally leads to aging."

    Using this information, the researchers began trying to activate (激活) the hypothalamus in mice. They did this by putting stem cells from younger mice into middle-aged animals. Later, the researchers examined mice and tested for changes in behavior. They also looked for changes in the strength of the animals' muscles and the way they worked. The researchers say the results show that the treatment slowed aging in the animals.

    Cai says when hypothalamus stem cells, which were derived from young mice was put into middle-aged mice, the mice aged slowly and they also have increased the length of their lives.

    But these results were just from studying mice in a lab. If the mice can live longer, does that mean people could have longer lives? The next step is to see if the anti-aging effects also work in human beings.

    The movie season is getting started. Here are some good ones you cannot miss!

    Coco (2017)

    Despite his family's confusing long-held ban on music, Miguel dreams of becoming an accomplished musician like his idol, Ernesto de la Cruz. Desperate to prove his talent, Miguel finds himself in the astonishing and colorful Land of the Dead following a mysterious chain of events. Along the way, he meets charming trickster Hector, and together, they set off on an extraordinary journey to unlock the real story behind Miguel's family history.

    Nominated for two Golden Globes, USA 2018: Best Original Song (for song Remember Me)—Motion Picture; Best Motion Picture—animated.

    The Disaster Artist (2017)

    When Greg Sestero, an aspiring film actor, meets the weird and mysterious Tommy Wiseau in an acting class, they form a unique friendship and travel to Hollywood to make their dreams come true.

    Nominated for two Golden Globes, USA 2018: Best Performance by an Actor in a Motion Picture—musical or Comedy; Best Motion Picture—Musical or Comedy.

    Wonder (2017)

    Unlike other three recommended movies, Wonder is based on a New York Time' bestseller, which tells the incredibly inspiring and heartwarming story of August Pullman, a boy with facial differences who enters fifth grade, attending a mainstream elementary school for the first time. Along the way, it is his family struggle and supports that help him earn others' compassion and acceptance.

    Nominated for three Broadcast Film Critics Association Awards 2018: Best Young Actor /Actress; Best Adapted Screenplay; Best Hair & Makeup.

    Ferdinand (2017)

    Ferdinand is a giant bull with a big heart. He is mistaken for a dangerous beast and is captured and driven away from his home and family. Determined to return to his family, he unites a seemingly-impossible team for an extraordinary adventure. Set in Spain, Ferdinand proves you can't judge a bull by its cover.

    Nominated for two Golden Globes, USA 2018: Best Motion Picture—animated; Best Original Song (For song Home)—Motion Picture.

    For many students who desire to move around but not far freely, one of the most common vehicles is the bicycle. For such a seemingly simple invention, its story is not that simple.

    Most historians trace its origin back to 1817, when a German nobleman named Karl von Drais invented a wooden, two­wheeled machine that riders moved forward with their feet. His invention became popular in both England and France, where it eventually became known as the velocipede. Unfortunately, it was eventually banned as a danger to pedestrians and was rarely seen after the early 1820s.

    Things were quiet for several decades until the bicycle development took off in the 1860s. An important milestone happened in Paris in 1863 when pedals were added to the front axle (轴). This occurred in Pierre Michaux's workshop, but it's unclear whether he or his employee, Pierre Lallement, should be given credit for the innovation Lallement moved to the United States, where he obtained a patent for "improvements in velocipedes" in 1866. These new machines proved to be popular, and the name "bicycle" had come into use by 1869. However, many people referred to them as "bone shakers", which described their clunky ride due to a heavy wooden frame and steel wheels.

    In the 1870s, "high wheelers" or "penny­farthings" became popular. However, with a large front wheel and a much smaller rear wheel, they could be dangerous, if riders had to stop suddenly, as they would "take a header" when their momentum (动量) carried them over the front wheel onto their heads. Eventually, English inventor John Kemp Starley designed a "safety bicycle" with two same small wheels, a chain drive, and a set of gears. With tires added in and brake systems bettered in the following decades, bicycle production had skyrocketed to over one million bicycles by 1899.

    Mass production of bicycles increased their popularity greatly, since they became affordable for the average person. Over the course of the 20th century, manufacturers continued to improve the features and design of bicycles as new technologies appeared.