[填空题]S1. Why do people use multisources of water in their everyday life

[填空题]S1. Why do people use multisources of water in their everyday life

[简答题]Part 1Postcard Do you use postcards Why do people send postcards When do you send postcards Have you ever received postcards Which do you prefer, postcards or e-mails On what occasions will you send postcards instead of e-mails

[简答题]Part 1Postcard Do you use postcards Why do people send postcards When do you send postcards Have you ever received postcards Which do you prefer, postcards or e-mails On what occasions will you send postcards instead of e-mails

[填空题]Why do scientists use software rather than hardware in their experiment

[单项选择]Why do companies use a corporate travel agency
A. It saves them valuable time.
B. It guarantees service standards.
C. It offers the best available prices.

[填空题]Why do people decide to use a machine translation program instead of using a human translator Because it is _________________________ to use a human translator.

[单项选择]Why do bond portfolio managers use the concept of duration（）
A. It allows structuring a portfolio to take advantage of changes in credit quality.
B. It enables direct comparisons between bond issues with different levels of risk.
C. It assesses the time element of bonds in terms of both coupon and term to maturity.

[填空题]Why do people want to use postcards
Because they are（）

[填空题]Why people can’t use all of the fresh water
Because some of it is（）.

[填空题]Why do many companies still hesitate to use the Web to expand its market though the Web has proved to be more than a fashion today

[单项选择]

Conversation 2

Why do the student need to use a computer（）
A. To type an assignment.
B. To play games.
C. To send e-mails.
D. To write a paper.

[简答题]Drinking water and water for domestic use often come from groundwater. In order to protect this water, local water authorities can apply to local administrative authorities to mark certain locations as water protection areas. The size of these areas is calculated in such a way that the quantity of groundwater taken from them corresponds to the actual rainfall going into them. In the water protection, areas certain uses of the land and activities on the land are banned or restricted. Water protection areas fall into three zones. Zone 3 is the outermost zone with a diameter of 4 kilometers around the groundwater well. Here no chemical works or the use of pesticides (杀虫剂) are allowed. Zone 2 is determined around the so-called 50-day line. It is assumed that after 50 days in the groundwater harmful bacteria will have died off. Here settlements and fertilizer storage are forbidden. Zone 1 marks the ten-meter boundary around the well. Here, any use of the land, as well as access by unauthori

[简答题]S3. Why do other higher animals fail to use language as man does