常用的反映失业程度的两项指标是失业率和失业( )。A．稳定期 B．持续期 C．波动期

下列不属于社群行为的是（　　）

A．猩猩有严格的“等级制度”

B．多只狼围捕一只羚羊

C．多只家鸭一起觅食

D．一群蜜蜂“分工合作”

下列各选项中，属于增值税征收范围的有（）。

A.销售的货物

B.提供的属于营改增应税服务

C.进口的货物

D.提供的加工、修理修配劳务

防治痢疾感染的措施以下哪项不合适()

A．隔离患者和带菌者

B．大便培养一次阴性可解除隔离

C．患者的食具用物煮沸15分钟消毒

D．做好环境水源粪便管理及食品卫生

E．饭前便后要洗手

More people speak English than any other language except Chinese .English is the main language spoken in the United Kingdom，Ireland，Australia，New Zealand，Canada，the United States and some other countries. Altogether more than 450 million people speak English as their everyday language .Another 100 million or more speak at least some English. Most English words come from old Anglo­ Saxon，French，or Latin words.

Modern English developed through the efforts（努力） of literary(文学的)and political writings .Modern English was influenced by old English，the beginning of the university­ educated people，Shakespeare，the common language found in the middle of present­day England and an effort to show and standardize(使标准化)English.

British English，known as Standard English or Oxford English，underwent changes during the colonization(殖民)of North America and the creation（创建）of the United States .British English words changed into American English words，such as centre to center，metre to meter，theatre to theater and so on.

Until the 18th century，British and American English were very similar with almost no difference .Immigration（移民） to America by other English peoples changed the language by 1700.Noah Webster，author of the first authoritative(权威的)American English dictionary，created many changes.

小题1:Modern English developed through______.

A．the efforts of literary writings

B．the efforts of political writings

C．old Chinese

D．both A and B小题2:American English changed from______ during the colonization of North America and the creation of the United States.

A．British English

B．Standard English

C．Oxford English

D．all of the above小题3:British English was almost similar to American English until the______ century.

A．20th

B．19th

C．18th

D．17th小题4:What is the title of the passage?

A．Why more people speak English

B．What modern English is

C．When British and American English had no difference

D．English and its development

反映左室肥大的体征有（）

A.心尖区抬举性搏动

B.心尖搏动向左下移动

C.心界向左下扩大

D.负性心尖搏动

E.剑突下搏动