Marine biology is the study of the ocean’s plant and animal life. Marine life gives us food, medicine and other raw materials we need. It also supports tourism and provides us with an area of recreation.

    1     (difference)forms of life live in various areas of the ocean. Some are limited to coastal and shelf areas, while others live in the open sea.

Coral reefs     2     (find) in the tropical areas of the world, but they can also exist in colder water. Reefs are built by corals and other     3     (animal)that leave calcium on rocks. They are home to     4     vast variety of life forms. About half of the world’s coral reefs, however,are     5     danger because of global warming and a rise in sea temperatures.

Although we do not know very much about    6     kind of life forms exist in deep ocean trenches(深海沟), marine scientists have found a certain type of jellyfish(水母) in the Mariana Trench, the world’s     7     (deep)ocean area. These parts of the ocean     8     (usual)have little or no sunlight and many organisms(生物)here have to produce light     9     (they).

Marine scientists also study how waves and currents affect organisms     10     (live)in the oceans.

When I was 5, I had a very serious disease,     1     made me lose my speech. The doctor told my mother that I would never be able to speak well again or learn another language. My mother, however, was a fighter(斗士). She wouldn’t give up     2     (easy). Instead, she sent me to many     3     (teach). Finally, she sent me to Maria. She believed in me and     4     (think) that I would speak again.     5     most amazing thing was that she taught me to read by mouth. I spent hours in front of the mirror(镜子)     6     (repeat) every word that I had learnt. My efforts paid off(得到回报) and I leant     7     (speak) my native language, Spanish. Now，I am studying another language, English.

Mother gave me lots of     8     (encourage) when I was a child. I'll always remember the beautiful words     9     she said to me. "You have done something nobody thought you could do. You have made an impossible dream come true. I will always be proud of you，and you will always be     10     (me) hero(英雄).

Along the River During the Qingming Festival is a painting     1     the Song Dynasty artist Zhang Zeduan(1085-1145 ). The painting is 25.5 centimetres in     2     ( high ) and 5.25 metres long. The countryside and the crowded city are the two main parts in the picture, with the river     3    ( run ) through the entire length. The right part is the rural area of the city. There are crop fields and rural folk. A country path broadens into a road and     4     ( join ) with the city road. The left half is the urban area,     5    eventually leads to the city center. Many economic activities can be seen in this area. Zhang Zeduan’s painting is celebrated as     6    most famous work of art from the Song Dynasty. However, there are copies of the famous painting. An early copy, generally     7    ( consider ) to be the most similar to the original, was made by Zhao Mengfu during the Yuan Dynasty. Another known remake(新版)    8    ( paint ) during the Ming Dynasty. This copy has a length of 6.7 metres,     9    ( long ) than the original. Another version by five Qing Dynasty court painters was presented to the Qianlong Emperor on January 15, 1737. This version was.    10     (late) moved, along with many other handicrafts, to the National Palace Museum in Taipei in 1949.

It is reported that at present a city in Japan has a problem with graffiti(涂鸦). However, it is not the usual type of graffiti with paint from spray cans     1    (use) to write on walls. It is graffiti in sand.

Officials in the city of Tottori are asking tourists to give up     2     (write) messages and drawing pictures in the sand of its giant sand dunes (沙丘). The officials say the graffiti causes damage to the dunes,     3     destroys the pleasure others get in looking at the sand.

More than 3,300 cases of "sand graffiti"     4     (occur) at the tourist spot in the past decade. In January, two overseas tourists were ordered     5     (erase) a 25-meter-long message that read "Happy Birthday Natalie".

The Tottori Sand Dunes are famous throughout Japan     6     their natural beauty. They are the largest and longest sand dunes in the country and form part of     7     scenic coastal park on the sea of Japan coast. The biggest dune is 50 meters high.

The local government wants to improve tourists' understanding of the     8     (important) of the dunes. It will set up much     9     (many) signs in English, Chinese and Korean asking people to respect the dunes. A spokesman said, "We are concerned about whether the rules are     10     (complete) understood, and we want to continue to protect views of the beautiful sand dunes."