Dust storms are Beijing again. The people of Beijing are wearing masks to protect their mouths and noses. The dust storms are a problem for the people of Beijing. For several years. The storms have made being outdoors dangerous. Why do the sandstorms hit Beijing and How do we solve the problem?

The sand and dust are a problem whenever the wind comes from the north.. ①When the wind is________, it        dust and sand from the desert to north-west China.②Often the sandstorms are so bad that drivers have to be careful and use their headlamps to help them see what’s in front of them.

The Central Meteorological Station(中央气象台)says that sandstorms are a problem in summer because the land is drier. This means that the earth does not stick to the ground and the wind carries more sand and dust. When there is more rain, this does not happen, but this area is one of the driest places in the country. Dust storms also affect(影响)other areas like central and northern parts of China. Gansu and Shanxi provinces are also affected.

   Sandstorms are a difficult problem because of people’s carelessness with the trees and grasslands. People are cutting down too many trees and raising too many sheep or cows on grasslands．So many grasslands and farmland become desert(沙漠)or sand. One way to solve the problem is to plant trees to hold earth to the ground. This will also bring more rain because plants help make the world’s rain. So, solving the problem needs a long-term plan. Today, the people of northern China have to protect themselves from the effects of this unpleasant natural disaster．

76. 在①处填上适当词使文章完整。___________　___________

77. 将②处译成汉语。

______________________________________________________________

78. What’s the reason to make many farmlands and grasslands become desert?

_____________________________________________________________________________

79. 找出与下列句子意思相同的句子。

Other areas like central and northern parts of China are also affected by the sandstorms.

_____________________________________________________________________________

80. 找出本文的主题句。

I have an American friend．Her name is Lily．This is a picture of her new school．Look! There are six floors（层）in the teaching building．There are fifteen classrooms on every floor．In the school，there are 3,200 students and 300 teachers．The teachers’ offices are behind the classrooms．The dining hall is next to the teaching building．Lily often has lunch there．After lunch she often has a talk with her friends．In front of the dining hall is a library．It’s a good place to read books．

Lily gets to school at 7:40 a.m．The first class begins at 8:00 a.m．She has four lessons in the morning and two in the afternoon．There is a big gym behind the dining hall．After school，Lily likes going swimming there．

The school is big and nice，and Lily likes it very much．

1.How many classrooms are there in the teaching building?

2.What does Lily like doing after school?

3.Where is the school library?

4.What does the word“begin”mean in Chinese?

5.What’s the best title（标题）of the passage?

I have an American friend．Her name is Lily．This is a picture of her new school．Look! There are six floors（层）in the teaching building．There are fifteen classrooms on every floor．In the school，there are 3,200 students and 300 teachers．The teachers’ offices are behind the classrooms．The dining hall is next to the teaching building．Lily often has lunch there．After lunch she often has a talk with her friends．In front of the dining hall is a library．It’s a good place to read books．
Lily gets to school at 7:40 a.m．The first class begins at 8:00 a.m．She has four lessons in the morning and two in the afternoon．There is a big gym behind the dining hall．After school，Lily likes going swimming there．
The school is big and nice，and Lily likes it very much．
【小题1】How many classrooms are there in the teaching building?

请认真阅读下面短文，并根据各题所给首字母的提示，写出一个合适的英语单词完整、正确的形式，使短文通顺。

The past years have seen a rapid development of black-and-white TV into color TV and then into HDTV．

Now almost every family has a TV and almost everyone（1）e_________ watching TV．In fact，TV has already become part of our（2）l_________．Most people，young or old，are likely to（3）s_________ in front of a TV set in the evening instead of talking with each other or doing（4）a_________ else．

TV has many（5）a_________．For example，it can offer us the latest news about what are（6）h_________ in every corner of the world；it can open our eyes and enlarge our knowledge．In a word，it helps us to（7）l_________ more about the world．

However，it also has some disadvantages．Some people spend too much time watching TV．This affects their life and work．To children，watching too much TV may be（8）h_________ to their eyes．So we should control the（9）t_________ of watching TV．

We all look（10）f_________ to further improvement of TV to meet our growing needs．