In many people's opinion, man's first real invention,{#blank#}1{#/blank#}is also one of the most important inventions in history, is the wheel. All transportation and every machine in the world depend{#blank#}2{#/blank#}it. The wheel is the{#blank#}3{#/blank#}(simple) yet perhaps the most remarkable of all{#blank#}4{#/blank#}(invention) because there are no wheels in nature.{#blank#}5{#/blank#}, then, did man come to invent the wheel? Perhaps some early hunters found that the body of {#blank#}6{#/blank#}heavy animal could be rolled through the forest on logs (圆木) more{#blank#}7{#/blank#}(easy) than they could carry it. However, the logs{#blank#}8{#/blank#}them) weigh a lot.

    It must have taken a great prehistoric thinker to imagine two thin slices of log connected, at their centers by a string stick. This would roll along just {#blank#}9{#/blank#}the logs did, yet be much lighter and easier{#blank#}10{#/blank#}(handle). Thus the wheel and axle came into being and with them the first carts.

    No one loves me more than my parents, especially my father. My father is stout and strong, severe look on his face and keen expressive eyes. At first sight you may feel him hard{#blank#}1{#/blank#} (approach). In fact, he is very kind and considerate. I believe my father is a{#blank#}2{#/blank#} (talent) man. He decisive and efficient in doing things. By his own talents and years of efforts, he{#blank#}3{#/blank#} (provide) the family with a good social position and a{#blank#}4{#/blank#} (relative) rich life. Besides, he lives in harmony{#blank#}5{#/blank#} others and never quarrels with anyone, so people from all walks of life come to my house, from{#blank#}6{#/blank#} I've gained lots of social experience. But at home he is a strict parent who is hard on me and has high{#blank#}7{#/blank#} (expectation) of me. I can see that my idling away time{#blank#}8{#/blank#} (hurt) him deeply, while if I have done something great and meaningful, such as{#blank#}9{#/blank#} (write) a book, he will be more excited than me. I always remind myself I must go on and on, and never {#blank#}10{#/blank#} I give up halfway.

    Many people keep small fish {#blank#}1{#/blank#} pets. They keep them in a tank (鱼缸) of water. The tank {#blank#}2{#/blank#} (make) of glass. People can look through it. They can see inside the tank and watch the fish.

    The fish need room. They mustn't be crowded. They need oxygen {#blank#}3{#/blank#} (breath). There must be enough water for all fish. So the size of the tank is very {#blank#}4{#/blank#} (importance).

    In the tank people put small plants {#blank#}5{#/blank#} are good for fish. They give oxygen to the water. Plants help in other ways, too. They can hide {#blank#}6{#/blank#} the plants and sleep, lay eggs there.

    The fish should {#blank#}7{#/blank#} (keep) in water all the time. Some can jump high. So the tank should be covered. This keeps the fish from {#blank#}8{#/blank#} (jump) out.

    The fish need food and should be fed every day. But if you give them too much food, it is very bad, for the extra food {#blank#}9{#/blank#} (fall) to the bottom and make the water dirty. So the fish should get just enough food and finish {#blank#}10{#/blank#} in ten minutes. Nothing should be left.

    London is the capital city of the {#blank#}1{#/blank#} (unite) Kingdom which is off the northwest coast of the continental Europe. London is the seat of the Government of the United Kingdom. Many government departments are based close to the Palace of Westminster.

    The history of London {#blank#}2{#/blank#} (go) back to its founding by the Romans, {#blank#}3{#/blank#} named it Londinium. London has a wide range of peoples and cultures, and more than 300 languages are spoken within Greater London. London is {#blank#}4{#/blank#} leading global city with strengths in arts, education, entertainment, fashion, tourism and transport. It is one of the world's most-visitedcities and has the world's largest city airport system. London has many universities, making {#blank#}5{#/blank#} the largest centre of higher education in Europe. In 2012, London became the first city {#blank#}6{#/blank#}(host) the modern Summer Olympic Games three times. London is a world {#blank#}7{#/blank#} (culture) capital and is home {#blank#}8{#/blank#} many museums, galleries, libraries, and sporting events, including the British Museum which always symbolizes London. The London Underground is the {#blank#}9{#/blank#}(old) underground railway network in the world.

    London is{#blank#}10{#/blank#} a wonderful city that travelling there will be an exciting experience.

    In China, the history of people planting and using bamboo can date back as far as 7000 years. As early as the Shang Dynasty, bamboo was being used in ancient peopled dally lives. It was used for food, clothing, housing, transportation, {#blank#}1{#/blank#} (music) instruments and even weapons.

    The {#blank#}2{#/blank#} (apply) of bamboo in science and technology is thrilling. In 251 BC, Li Bing, in Sichuan, {#blank#}3{#/blank#} (lead) the local people in building the Dujiang Weirs, the first irrigation network in the world, in which bamboo played {#blank#}4{#/blank#} important role. The world's oldest water piper was also {#blank#}5{#/blank#} (make) of bamboo. During the Han Dynasty, the people in Sichuan {#blank#}6{#/blank#} (success) sank a 1600-metre-deep well with thick bamboo ropes. This technology did not spread to Europe {#blank#}7{#/blank#} the 19th century, and it was by using the technology {#blank#}8{#/blank#} the Americans drilled the first oil well in Pennsylvania in 1859.

    In Chinese culture, bamboo is well-known as {#blank#}9{#/blank#} of the "four gentlemen" in plants. To many distinguished men, bamboo is a symbol of goodness and honesty. It is always closely related to people of positive spirits. Bamboo culture contributes to encouraging People to hold on when {#blank#}10{#/blank#} (face) tough situations.