Daniel is writing to Raymond, However,he is not sure how to use some words and phrases.Help him complete the e-mail using the correct forms of the words and phrases from the box below.

as usual    chat　　  find out　　　　 noise

run away  run into   take care of　　  turn around

完形填空

Big schoolbags have been a serious problem for students for a long time.Maybe your schoolbag is too 　1　 to carry，and it troubles you a lot 　2　 you want to find a book out to read，Now an e-textbook will 　3　 you.

It is said that e-textbooks are going to be 　4　 in Chinese middle schools.An e-textbook，in fact，is a small 　5　 for students.It is much 　6　 than a usual schoolbag and easy to carry.Though it is as small as a book，it can 　7 　 all the materials（材料）for study.The students can read the text page by page on the 　8　，take notes with the pointer（屏写笔）.Or even “　9　” their homework to their teachers by sending e-mails.All they have to do is to press a button.　　

Some people say e-textbooks are good，but some say they may be 　10 　 for the students’ eyes.What do you think of it?

阅读理解

　　The world is not only hungry, but it is also thirsty for water. This may seem strange to you, since nearly 70％ of the earth's surface is covered with water. But about 97％ of that is sea water, or salt water. Man can only drink and use the other 3％ the fresh water from rivers, lakes, underground, and other sources. And we can not even use all of that. Even worse, some of it has been made dirty.

　　However, as things stand today, this fresh water is still enough for us. But our need of water is becoming larger and larger quickly-almost day by day. We should take steps to do with this problem now and in this way we can get away from a serious world-wide water shortage later on. We all have to learn how to stop wasting our valuable water. One of the first steps is to develop ways of reusing it. Today in most large cities, water is used only once and then sent out into sewer system(下水道). From there it returns to sea or runs into underground places. But even if every large city reused its water, we still would not have enough. All we'd have to do to make use of sea water in the world is to remove the salt. If we take these steps we'll be in no longer danger or drying up.

(1) The world is thirsty for water because ________.

[　　]

A. man hasn't got enough food to eat

B. we haven't got enough fresh water

C. only 70％ of the earth's surface is water

D. more water is sent into sewer systems

(2)The underlined word valuable means ________.

[　　]

(3) What should we do if we want to have enough fresh water?

(a) Make full use of water.

(b) Carry salty water into lakes or rivers.

(c) Try to save the fresh water as much as possible.

(d) Do our best to use the water again.

(e) Drink and use all the water on the earth's surface.

[　　]

(4) The best but the most difficult way to solve the water problem of the world is to ________.

[　　]

A. remove the salt from the water

B. make the water in cities clean

C. take water from underground

D. make the need for water smaller

(5) What's the best title for this passage?

[　　]

A. The Importance of the Water

B. The World's Water Problem

C. The Thirsty World

D. Fresh Water and Sea Water