The Yellow River is the river in China.

— About two thousand. A number of them ______ from England.

    A thousand years ago, Hong Kong was covered by a thick forest. As more and more people came to live in Hong Kong, these trees were cut down and burnt. Now there is 1 forest left, though there are still some small areas(地方) covered with trees. We call these woods. Elephants, tigers and many 2 animals were living in the thick forest. When people came to live in Hong Kong, the 3 began to die out. Early farmers grew rice and 4 pigs and chickens in the valleys. They cut down the trees and burnt them. They needed 5 to keep themselves warm in winter, to cook their food and to keep away the dangerous animals. Elephants quickly disappeared because there was not enough food for them. 6 did most of the wolves and tigers. Monkeys and many other animals soon 7 in the same way.

    You might think that there are no longer any animals in Hong Kong 8 in the zoos. There are still about 36 different animals 9 there. One of the most interesting of Hong Kong's animals is the barking deer. These are beautiful little animals with a rich brown coat and a white patch(补丁) under the tail. They look like deer but they are much like a dog barking. In Hong Kong the barking deer has only a real enemy-10. People hunt these little animals though it is illegal(违法的). There are now not many barking deer left. So it is important for people to care for wild animals.

    RIVER DOLPHIN RUNNING OUT OF TIME

The Yangtze dolphin is the only kind of dolphin that lives in freshwater all its life. Scientists say that the finless freshwater dolphin that has lived in the Yangtze River for over 20 million years, will die out in 15 years. It's in danger of disappearing forever.

    Dangers:

    Dredging(挖掘) of their habitat

    Heavy boat traffic in the Yangtze River

    Insecticide(杀虫剂) and mercury(汞)

A man is 110 centimeters a panda.

    Alaska Range(阿拉斯加山脉) is famous for its valleys and glaciers(冰川). It has many t forests and big glaciers which are over millions of years old. It a more than a million tourists from all over the world. It is also one of the most d places on the earth.

    Of all the p, Mount McKinley is the highest. It's one of the most popular places to go for mountain c. It's very difficult to climb Mount McKinley because the t of the mountain is covered by thick snow all year round, and there are many other difficulties like the f weather c, avalanches(雪崩), the heavy storms and so on.

    For these climbers it is an extremely dangerous climb—i, many people have l their lives on this mountain. However, the mountain climbers have never given up climbing it, and they enjoy the great challenges in the mountains.

1）中学生上网基本以听音乐、看电影、玩游戏、聊天为主；

2）大多数中学生天天上网，有的一天一个小时，有的一天两个多小时；

3）由于经常上网，他们上课打瞌睡，放学后不完成作业；

4）你对中学生上网的看法和建议。

要求：

包括所有提示要点，90词左右；开头已给出，不计入总词数。

    Nowadays a large number of middle school students like surfing the Internet.