You may think there is nothing but sand in the desert of the world, but it is not true. In the desert we can{#blank#}1{#/blank#} stones. We can see hills, too. There is a little rain in the {#blank#}2{#/blank#} , but it is not  {#blank#}3{#/blank#}  for most plants.
　　The animals are{#blank#}4{#/blank#} to the desert people in many ways. The desert people eat the meat and drink the milk of the animals. They use their skins to  {#blank#}5{#/blank#}  shoes, water bags and even tents(帐篷). They use the camels(骆驼) for {#blank#}6{#/blank#} things.
The people of the desert have to keep {#blank#}7{#/blank#}  from places to place. They must always look for grass or desert plants for their animals. They usually live in the tents. When there is mo more food for their animals, they take down their tents, put them on the camels and move to {#blank#}8{#/blank#} place. The desert people are very  {#blank#}9{#/blank#} . No man in the desert would ever refuse to help the people in {#blank#}10{#/blank#} and give them food and water

    Jim Green is a student in No.25 Middle School. He does a part-time {#blank#}1{#/blank#} because he needs some {#blank#}2{#/blank#}. He works in a supermarket after {#blank#}3{#/blank#} from Monday to Friday and all {#blank#}4{#/blank#} on Saturday. He helps people look after their kids and he works {#blank#}5{#/blank#} different kids. He thinks it is great {#blank#}6{#/blank#}. After school, he {#blank#}7{#/blank#} a bus to the supermarket. He {#blank#}8{#/blank#} there at about 4:30. He works {#blank#}9{#/blank#} 4:30 to 8: 30. He gets home {#blank#}10{#/blank#} 9: 00. Jim likes his job very much.

    In 1715 ,at fleet(舰队) of Spanish ships left Havana, Cuba for Spain. On their way home, they ran into bad weather. Eleven ships--along with{#blank#}1{#/blank#}of treasure they were carrying--were lost. About 1,000 people{#blank#}2{#/blank#}.

    For nearly 250 years, the sea kept most of the treasure to itself. Then, in the 1950s, a man found coins and some {#blank#}3{#/blank#} treasure on a Florida beach. He soon {#blank#}4{#/blank#} that one of the Spanish ships must have been nearby(;(在附近). That's when a big undersea treasure hunt(搜寻) began.

    Two big discoveries were {#blank#}5{#/blank#} just in the summer of 2015. In June, some professional treasure hunters found coins and jewellery worth over $1 million. There was even one gold coin that was worth over

 $500,000 {#blank#}6{#/blank#}. The following month, a team of treasure hunters found 350 gold coins, together worth $4.5 million. So far, about $400 million worth of treasure is said to have already been found.

    So who can {#blank#}7{#/blank#} treasure found at sea? Each case(情况) is different, but in the case of the 1715 fleet, 20 percent goes to the state of Florida for its museums. Other treasure is 2{#blank#}8{#/blank#} between Queens

Jewels and whoever finds it. Queens Jewels is a company who owns the rights (权利) to the fleet.

    Even if you are not {#blank#}9{#/blank#} to keep what you find, there is plenty of reason to be excited. "These finds are {#blank#}10{#/blank#} not just for how much they are worth, but their historical importance," says the owner of Queens Jewels.

    We do not know when people invented wheels. But once it was invented, knowledge of the wheel{#blank#}1{#/blank#}quickly across the world. It is easy to move things with wheels. The first example of wheels dated from about 3. 500 to 3. 000 BC. The cart or wagon was the first vehicle which had wheels. At that time, they were pulled by humans or animals. Today, there are still carts drawn by animals in many countries. These carts are mainly used to move things or{#blank#}2{#/blank#}people. Around 2, 000 BC, the chariot(双轮敝篷马车)appeared. It moved even faster than the cart, so it soon became an important{#blank#}3{#/blank#}in the war and later was introduced to other ancient countries, such as Egypt, Persia, Greece and Rome.

    The invention of wheels is very important to the{#blank#}4{#/blank#}of new transportations. Without wheels, the invention of bicycles, motorcycles, cars, trains, and planes may not be possible.