中国的官方语言普通语（Mandarin）在美国的学校中突然热起来。由于中国经济在21世纪的快速发展，美国

of each comversation you will hear four questions. both the comversation and the questions will be spoken only once. afier you hear a question, you must choose the best answer from the four choices marked a, b cand d. then mark the corresponding letter on answer Sheet i with a single line through the centre. Questions1 to 4 are based on the conversation you have just heardA.they reward businesses that eliminate food wast

B.they prohibit the sale of foods that have gone stale

C.they facilitate the donation of unsold foods to the needy

D.they forbid businesses to produce more foods than needed

2、A.it imposed penalties on businesses that waste food

B.it passed a law aiming to stop overproduction

C.it voted gainst food import from outside europe

D.it prohibited the promotion of bulk food sales.

3、A.it has warmed its people against possible food shortage.

B.it has penalized businesses that keep overproducing foods

C.it has started a nationwide campaign against food waste.

D.it has banned supermarkets from dumping edible foods.

4、A.the confusion over food expiration labels.

B.the surplus resulting from overproduction

C.americans' habit of buying food in bulk

D.a lack of regulation on food consumption

7、A.mail a gift card to her.

B.allow her to buy on credi

C.credit it to her account

D.give her some coupons.

8、A.refunding for goods returned

B.free installing of appliances.

C.prolonged goods warranty.

D.complimentary tailoring

5、Questions 5 to 8 are based on the conversation you have just heard.A.it has started a week-long promotion campaign.

B.it has just launched its annual anniversary sales

C.it offers regular weekend sales all the year round

D.it specializes in the sale of ladies designer dresses

6、A.price reductions for its frequent customers.

B.coupons for customers with bulk purchases.

C.free delivery of purchases for senior customers.

D.price adjustments within seven days of purchase.

请帮忙给出每个问题的正确答案和分析，谢谢！

Chomsky defines“competence” as the ideal user's () of the rules of his language.

() is the smallest meaningful unit of language.

In linguistics research, both () and () approaches are preferred.

Language is distinguished from traffic lights in that the former has the designing feature of ().

Language is a means of verbal communication. It is () in that communicating by speaking or writing is a purposeful act.

() is a design feature of human language that enables speakers to talk about a wild range of things free from barriers caused by

If a linguistic study describes and analyzes the language people actually use, it is said to be ().

The study of the meaning of lingustic words, phrases is called ().

话题：

随着生活水平的提高,人们对于幸福感也有不同的要求.

幸福是什么?不同的人有不同的看法那么你对幸福感是如何定义的呢?它是否包括物质层面?