解方程：x2-2x-2=3x2-2x

主要分布于中纵隔的肿瘤有（）

A.畸胎瘤

B.霍奇金病

C.心包囊肿

D.神经源性肿瘤

E.支气管囊肿

金融衍生工具产生的最基本原因是（ ）。

A．逃避金融管制

B．金融机构的利益驱动

C．避险

D．存在套利机会

在人类语言的交际活动中，听说占了人类语言交际活动的______，所以在小学阶段，在英语基本技能的培养方面，我们应该坚持______、读写跟上的原则。

Do you love American country music? If you do, come to Nashville. It’s the home of American country music.

Nashville is the capital city of the state of Tennessee. Here you don’t have to go to the big auditoriums(音乐厅) to enjoy the country music. In the open air restaurants or on the streets, you can always hear the beautiful and sweet sounding folk music. All the singers are young and they play their guitars while they sing. The songs they sing are so touching(动人) that, if you listen attentively, you can feel they are singing with their souls rather than with their voices.

Shops selling music records and tapes can be found everywhere in Nashville. Many records are made by famous singers and they are sent to many countries all over the world.

The folk songs most of the singers sing come form the rural areas in the southern United States. The songs often describe those days to situations and the feeling of the country people. They often sing in praises of heroism(英雄) and true love.

1. From the passage we know Nashville is ________.

A. a village 　     B. a big city   C. a small town 　      D. a capital city

2. To enjoy the country music, you can go to ________.

A. the big auditoriums   B. the open air restaurants    C. the streets 　D. All of the above

3. According to the passage which of the following statements is not true?

A. Shops that sell music records and tapes can be found everywhere in Nashville.

B. The folk songs can impress you deeply

C. Not all records are made by famous singers

D. The folk songs only sing in praises of heroism and true love.

4. The passage is mainly about ________.

A. Nashville 　B. American young people   C. pop singers 　 D. the country music

男性，66岁，胃癌根治术后进行性少尿，尿量＜300ml/d，伴心悸、乏力；既往慢性肾功能不全3年。血压95/60mmHg，心率90次/分钟，双侧膝腱反射减弱；心电图发现T波高尖，血pH7.28，肌酐110μmol/L。

针对患者目前的状况，下列哪一项治疗措施是错误的（）。

A.静脉输注碳酸氢钠溶液

B.自胃管注入枸橼酸钾

C.应用阳离子交换树脂

D.输注葡萄糖溶液和胰岛素

E.10%葡萄糖酸钙缓慢滴注