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.

    Li Qiang was transported safely into the year AD 3008 in {#blank#}1{#/blank#} time capsule. At first, he found his new surroundings were difficult {#blank#}2{#/blank#} (tolerate) and his head ached for a lack of fresh air. Just as he tried to make the necessary {#blank#}3{#/blank#} (adjust) to the new situation, Wang Ping, his friend and guide, appeared and handed him a mask. After putting on it, Li Qiang felt better {#blank#}4{#/blank#} no time. Soon he was back on {#blank#}5{#/blank#} feet again and following Wang Ping to collect a hovering carriage {#blank#}6{#/blank#} (drive) by computer. Then they flew it to the future of {#blank#}7{#/blank#} was still Li Qiang's hometown. Arriving at a strange-looking house, he {#blank#}8{#/blank#} (show) into a large, bright dean room, {#blank#}9{#/blank#} nearly everything would appear just by flashing a switch on a computer screen. After having a brief meal and a hot bath. Li Qiang slid into bed and fell sound {#blank#}10{#/blank#} (sleep).

    Pollution takes away all the beauty of the beaches of Hawaii. I hate to go to the beaches on {#blank#}1{#/blank#}(sun) weekends and see rubbish bags{#blank#}2{#/blank#}(lie) on the sand, cigarette butts(烟头）{#blank#}3{#/blank#}(bury) in the sand, and soda cans floating in the ocean.

    One thing that really annoys me is that I see tourists who visit Hawaii leave their rubbish on the beaches. I was always taught after drinking soda to throw the can into the place {#blank#}4{#/blank#}it should stay at --the trash can. Another thing that annoys me is that some people walk right by rubbish {#blank#}5{#/blank#}pretend that it's not there.

    The dogs or the fish are not to blame for it. It's our fault and we must blame {#blank#}6{#/blank#}(we).Everyone has to do his or her part{#blank#}7{#/blank#} (solve) this problem. It can't be difficult to do the job. There are a lot of things that we can do. First of all, we can help pick {#blank#}8{#/blank#}rubbish along the beaches. We could also form organizations that help clean up our beaches, More{#blank#}9{#/blank#}(important),we need to start now before the beaches{#blank#}10{#/blank#}(damage) beyond repair.

    The game of basketball was created by Dr. Naismith, a Canadian who worked as a physical education {#blank#}1{#/blank#} (instruct) at a college. He noticed {#blank#}2{#/blank#}lack of interest in exercise among students during wintertime. The Canadian winters were very cold, so the students were {#blank#}3{#/blank#} (will) to do outdoor activities. Naismith determined that a fast-moving game {#blank#}4{#/blank#} (play) indoors would fill the empty after the baseball seasons had ended. In December of 1891, he {#blank#}5{#/blank#} (hang) two old baskets at either end of the gym, and with nine players on each side, organized the first basketball game. In less than a year, basketball was being played in {#blank#}6{#/blank#}the United States and Canada. Five years {#blank#}7{#/blank#} (late), a championship was held in New York City. {#blank#}8{#/blank#}that time, the team had already been reduced to seven, and five became standard in the 1897 season. When basketball first appeared in the 1904 Olympic Games, it {#blank#}9{#/blank#} (quick) spread throughout the world. In 1906, a metal ring {#blank#}10{#/blank#} (use) to replace the basket, but the name basketball has remained.