晚清外交家黄遵宪在一首咏物诗中写道：“驰书迅已极，云是君所寄。既非君手书，又无君

Who are these people rushing by you on the street? More than 250 million people now call Amer­ica" home" , but most of them can trace their families back to other parts of the world. If you, look at the names on shop windows, you will see that Americans come from many different lands. The idea that these people, who once were strangers to the United States，have lost the customs and cultures of their original countries and have become "Americans"is really not true. In fact, what exists in Ameri­ca is - more often a kind of “ side - by - side" living in which groups of people from other countries often have kept many of their own customs and habits. They join the general American society only in certain areas of their lives such as in schools，business，and sports一but they keep many of their own native customs and manners socially and at home. This “ side - by - side" living has both advantages and disadvantages. Sometimes it may cause disagreements to develop between groups whose ways of life are very different from one another. However, there are also great advantages that come from the variety of cultures brought by settlers from other lands. There is great freedom of choice among ideas ’ dress, food, and social customs in America. Everyone can find some part of his or her own familiar world in the United States, in churches, music, food, national groups, or newspaper.

小题1:More than 250 million people call America ”home" because    .

A．they have their houses there

B．they settle there now

C．they want to make their home there

D．they like that land very much小题2:Side - by - side living style means

A．to make friends with native people

B．to keep their own customs while sharing American ones in certain areas

C．that the groups of people live nearby

D．that they get closer to American society小题3:According to the passage, people in the USA

A．share American customs and cultures

B．live in a kind of side - by - side society

C．keep their own customs and habits firmly

D．make no choice to accept American customs小题4:Which of the following statements is TRUE?

A．They always stick to their own customs and habits.

B．Side - by - side living style is not suitable.

C．They face the society they are not familiar with.

D．The advantages coming from the variety of cultures make life in America colorful.小题5:Which of the following is the best title for the passage?

A．Advantages and Disadvantages

B．Different Customs and Habits

C．Home for the People

D．Side - by - Side Living Style in America

产品生命周期理论解释的是（）

A.贸易的流向

B.贸易的利益分配

C.贸易的原因

D.贸易的利益

当前最流行的并成为IEEE标准的硬件描述语言包括（）和（）。

哪种力又叫咀嚼压力

A．咀嚼肌力
B．力
C．最大力
D．牙周潜力
E．咀嚼用力

角色是构成组织结构的基本单元。