In 1940, four teenage boys and their dog were walking through woodland close to Lascaux, when their dog suddenly disappeared. The boys searched all around. They came to a cave and looked into the cave{#blank#}1{#/blank#} could see nothing.

    A few days later, the boys returned to the cave. They could hardly believe {#blank#}2{#/blank#}eyes. In the weak lamplight, the boys saw red horses and cows, and black bulls and deer charging across the walls of the cave, which looked so {#blank#}3{#/blank#}(frighten) that the boys jumped back in fear. Little did the boys know that they had made one of the most important{#blank#}4{#/blank#}(discover) of that century.

    The Famous Lascaux Caves consist of a large hole and{#blank#}5{#/blank#} series of connecting caves, with a natural water system. The paintings there were an especially important find because they are so numerous and so well preserved. After a few years, the caves were opened{#blank#}6{#/blank#} a tourist attraction, and 1,200 people per day came to the site{#blank#}7{#/blank#}(admire) the paintings{#blank#}8{#/blank#} (fortunate), many visitors resulted in changes in the cave's atmosphere, and green algae (水藻) began to grow around the walls. Since then, the caves {#blank#}9{#/blank#}(close) to the public in an effort to conserve the fragile paintings in this precious underground site.

    Today, the caves have computer-controlled air-conditioning and are inspected daily. Scientists hope that these precautions will prevent any{#blank#}10{#/blank#}(far) damage to the paintings.

    Domestic robots such as the Roomba have already established themselves in the marketplace. Common household appliances such as toasters and microwaves {#blank#}1{#/blank#}(fit) with microprocessors, effectively making them robots, which are bound to do as ordered. The military has begun automating (自动化) many of its frontline systems. The future is wide open for more exploration of these{#blank#}2{#/blank#}(device).

    Automatic factories were some of the first to implement (实施，运用) robotics on the assembly line, performing tasks too dangerous or delicate for humans{#blank#}3{#/blank#}(accomplish). This has continued with whole factories{#blank#}4{#/blank#}(begin) to be automated. IBM has instituted a “lights off' factory in Texas that is {#blank#}5{#/blank#}(complete) automated. Recently Caterpillar{#blank#}6{#/blank#}(announce) plans to operate robotic heavy machinery by 2021, and has already begun transferring much of their crane operations to remote-controlled robots{#blank#}7{#/blank#}obey the orders from computer directions. The medical industry has taken advantage {#blank#}8{#/blank#}robotic surgery assistants for years, most notably the Da Vinci surgical (外科的) helper. With rising health care costs{#blank#}9{#/blank#} the increasing needs of an aging population, hospitals are planning vast expansion in the areas of {#blank#}10{#/blank#}(talent) robotics.

Franklin's life is full of charming {#blank#}1{#/blank#} (story) which all young men should know—how he sold books in Boston and became the guest of kings in Europe; how he was made General Franklin, only to quit and help to organize the army {#blank#}2{#/blank#} was better than the trained troops of England and Germany.

    This poor Boston boy, {#blank#}3{#/blank#} a day's schooling, became master of six languages and never stopped {#blank#}4{#/blank#} (study). This apprentice（学徒）received degrees and diplomas from many colleges, and became forever {#blank#}5{#/blank#} (remember) as “Doctor Franklin”, philosopher, scientist and political leader.

    Self-made, self-taught, the candle maker's son {#blank#}6{#/blank#} (give) light to all the world; the street bookseller set all men singing of liberty; the apprentice became the most outstanding man across the world, and brought his native land to praise and honor him.

    He built America, for {#blank#}7{#/blank#} our nation is today is largely due to the management, the forethought, the wisdom, and the ability of Benjamin Franklin. He belongs to the world, but {#blank#}8{#/blank#} (especial) he belongs to America. The people around the world honored him while he was living. He is still regarded as {#blank#}9{#/blank#} loftiest man by the common people today after {#blank#}10{#/blank#} death. And he will live in people's hearts forever.

    The Secret Garden is a children's novel by Frances Hodgson Burnett, first published as a book in 1911. {#blank#}1{#/blank#} (set) in England, it is one of Burnett's most popular novels and is considered a classic of English children's literature. Several stage and film {#blank#}2{#/blank#} (adapt) have been made. At the turn of the 20th century, Mary Lennox is sickly and unloved 10-tear-old girl, born in India to {#blank#}3{#/blank#}(wealth) British parents who never want her. She is cared {#blank#}4{#/blank#}by servants, who allow her {#blank#}5{#/blank#} (become) a spoiled, aggressive and selfish child. {#blank#}6{#/blank#} through the discovery of her aunt's secret garden, her brother, and a cousin, Mary becomes a child we would all like to have as part of our household.

    The Secret Garden has become{#blank#}7{#/blank#} important part of children's literature, in 2003, it ranked number 51 in “The Big Read,” {#blank#}8{#/blank#}was a survey of the British public by the BBC to identify the “Nation's Best-loved” among all kinds. Based on a 2007 online survey, it {#blank#}9{#/blank#} (name) one of “Teachers' Top 100 Books for Children” by the U.S. National Education Association. In 2012 it ranked number 15 among all-time children's {#blank#}10{#/blank#}(novel) in a survey published by School Library Journal.

    A few years ago, famous writer and editor Tom became very ill. His body ached and he felt constantly tired. It was difficult for him to even move around. His doctor told him that he would lose the {#blank#}1{#/blank#}(able) to move and eventually die from the disease. He {#blank#}2{#/blank#}(tell) he had only a one in 500 chance of survival.

    Despite the diagnosis(诊断), Tom was determined to overcome {#blank#}3{#/blank#} disease and survive. He was always getting help from medicine books and some doctors {#blank#}4{#/blank#} gave the ideas of curing his disease. The ideas made Tom {#blank#}5{#/blank#}(think) about the possible benefit of several positive {#blank#}6{#/blank#}(emotion).

    He decided {#blank#}7{#/blank#}(concentrate) on positive emotions as a way to treat some of the symptoms of his disease. “Laugh therapy” became part of his treatment. He arranged time each day {#blank#}8{#/blank#} watching comedy films, reading humorous books, and {#blank#}9{#/blank#}(do) other activities that would draw out positive emotions. Within eight days of starting his ''laugh therapy” program, his pain began to decrease and he was able to sleep more {#blank#}10{#/blank#}(easy). He was able to return to work in a few months' time and actually reached complete recovery after a few years.