急性出血坏死性胰腺炎主要CT征象为（） A.胰腺体积常有明显增大，且为弥漫性 B.胰

The Vieira family moved to the United States in 1981. At that time, they decided to stop speaking Spanish at home and only communicate in English. This was because they were now living in an English-speaking country.

Now the Vieira children are adults, and they sometimes travel to Spain to visit their family and friends. But they cannot communicate with them. Unfortunately this is common. When people move to new countries, they often leave their own customs and mother language behind. This is a mistake because there are many benefits to knowing more than one language.

One advantage of speaking more than one language is that you can communicate directly with more people around the world. You do not have to depend on others to talk for you, so you’re more independent. People who know only one language must use others to help them communicate.

Furthermore, speaking a second language also allows people to experience other cultures and customs more effectively. Local expressions, vocabulary, and even jokes can have a powerful effect on a person’s understanding of another culture. So, knowing more than one language increases your knowledge of other cultures.

Finally, having more multi-language speakers improves relationships between countries. If people from different countries can communicate well, the world can become closer. Countries will then have more respect for each other and better understand each other’s problems.

The benefits of knowing more than one language are clear. In fact, there are no disadvantages. It is very sad that many people don’t try to learn another language. It is even worse when people let themselves forget their mother language and become silenced.

小题1:What is the passage mainly about?

A．The benefits of learning other languages.

B．The reasons why people come to America.

C．The importance of learning English.

D．How to learn another language.小题2:The passage begins with the experience of the Vieira family in order to_______.

A．discuss the need for teaching a new language

B．introduce the passage’s main characters to the readers

C．describe the advantages of moving to another country

D．show the problems of speaking only one language小题3:The underlined phrase “multi-language speakers” (Paragraph 5) means “people who know ______.”

A．their mother language

B．a new language

C．more than one language

D．body language小题4:According to the passage, if you can speak more than one language, you can____.

A．find a better job

B．make more friends

C．better understand history

D．communicate more independently小题5:Based on the last paragraph, which of the following is the worst?

A．Not knowing another language.

B．Forgetting one’s mother language.

C．Refusing to learn another language.

D．Failing to communicate with others.

The boys and girls hung out in the street       _    and ______.[ ]

A.singing, laughing            

B.to sing, laugh

C.sang, laughed            

D.sang, laugh

能使运动部件实现往复直线运动，且往复速度不一样的是（）油缸。

A.双杆活塞

B.单杆活塞

C.柱塞式

D.双杆柱塞式

下列关于急性白血病骨髓移植治疗的叙述，正确的是

A．自体骨髓移植应在第二次缓解期进行

B．异基因骨髓移植应在第二次缓解期进行

C．异基因骨髓移植患者的年龄应控制在40岁以内

D．从完全缓解到自体骨髓移植的时间间隔以6个月以上为佳

E．自体外周血干细胞移植较白体骨髓移植的造血功能恢复慢

从严格的意义上说，中国的改革并不是一个纯粹的经济问题，只不过在经济、政治、社会、文化这个大系统中经济的改革走在了前列。但随着改革的深入，随着改革走入中期，经济改革超前而其他方面的改革滞后所造成的社会心理和社会道德的差异，已经开始教育我们了。
这段话主要是为了阐明( )。

A．中国的改革不纯粹是一个经济问题
B．经济改革走在各项改革的前列
C．经济改革给我们带来了问题
D．经济改革和其他各方面的改革的不平衡已经开始给我们的社会带来了值得重视的问题