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The Silk Road is a historically important international trade route（路线）between China and the Mediterranean（地中海）. It began {#blank#}1{#/blank#} （在……期间）the Western Han Dynasty and has been a{#blank#}2{#/blank#}  between East and West for over 2,000 years.

The ancient road started from Chang'an（now Xi'an) and ended in Eastern {#blank#}3{#/blank#} , near today's Turkey and the Mediterranean Sea. It was about 6,500 kilometers long and went across one-fourth of the planet.

TheSilk Road got its name {#blank#}4{#/blank#} Chinese silk used to be carried along this road. Silk, jade, ceramics and iron{#blank#}5{#/blank#}  west to Rome. And from the west came glass, gems and food like carrots and sesame.

The Silk Road was very important to both China and the rest of the world. It was {#blank#}6{#/blank#}    than an ancient international trade route. Besides trade, {#blank#}7{#/blank#}  about arts, science and literature, as well as crafts（工艺）and technologies was{#blank#}8{#/blank#} （分享）across the Silk Road. In this way, languages and cultures{#blank#}9{#/blank#} （发展）and influenced each other.

Today,along the Silk Road there're many places of{#blank#}10{#/blank#} , such as the Terracotta Warriors in Xi'an and Mogao Grottoes in Dunhuang. Now a new train line runs from Beijing across the Silk Road.

    There is a nature park in the southwest of our city. The government built it to {#blank#}1{#/blank#} the rare animals. The nature park has been the {#blank#}2{#/blank#} of our city.

    Yesterday my friends and I visited it. The workers there asked us not to {#blank#}3{#/blank#}animals. Many animals are in{#blank#}4{#/blank#} because people kill them for their meat and fur. Another reason is that people are taking {#blank#}5{#/blank#}their land and making their water dirty . The {#blank#}6{#/blank#} is becoming very serious.

    I learnt much yesterday. I think people should {#blank#}7{#/blank#} up more comfortable houses for the animals and help them live in {#blank#}8{#/blank#}. We should do our best to protect them, because protecting them is protecting ourselves.

    Emily has so many {#blank#}1{#/blank#}at home. She has to do her homework after school. She can't go out {#blank#}2{#/blank#}school nights. She has to{#blank#}3{#/blank#}the dishes after dinner, then she can watch TV for half an hour. She usually reads books at night. She has to be in bed by ten o'clock because she has to get up {#blank#}4{#/blank#}the next morning. She joins a music club. She has to {#blank#}5{#/blank#}the guitar every day.

    Until the early twentieth century, it was always unsuccessful to transfuse blood（输血） from one person to another person. Then in 1901, Karl Landsteiner, an Austrian scientist, discovered that there are four types of blood. These four blood types were named A, B, AB, and O. People have one of these four types. Blood type O is the most{#blank#}1{#/blank#} around the world because the number of the people with type O is the largest, while type AB is the least. If people with type A blood are given type B blood,  or people with type B blood are given type A blood,  they will{#blank#}2{#/blank#} die. Karl Landsteiner's research made it possible to be sure that people who need blood get the correct type.

    The study of blood didn't stop. In 1972, a Japanese doctor, Furukawa Takeji, {#blank#}3{#/blank#} another research about blood. And he came up with the idea that it was possible to tell one person's {#blank#}4{#/blank#}only by his blood type, which can help you know about the person quickly.

It's time for class. You {#blank#}1{#/blank#} stop playing football or you {#blank#}2{#/blank#} be late for class.