唐朝文化繁荣的根本原因是[ ] A．人口众多 B．历史悠久 C．经济发达 D．疆

下列属于学术严谨性检验的有（）

A.一致性检验

B.逻辑一致性检验

C.灵活性检验

D.风险和资源检验

不属于公共卫生工作的核心内容是（）

A、识别

B、监测

C、纠正

D、评价

E、干预

春运不全是农民工“半城市化”带来的“副产品”。在许多大城市里，即便有了学历、有了户籍、有了家业的人，包括许多“白领”、成功人士等，到了春节也经常要举家返乡。这是长期农耕文明所形成的“家”文化和“年”文化，是在中国人心里保存的一种对亲情家庭和乡里故土的特殊感情和精神寄托。
下列符合文意的说法是( )。

A．春运是中国“家”、“年”文化造就的社会现象
B．农民工并未“半城市化”
C．大城市的白领春节都要举家返乡
D．春运的主角是农民工

Health officials in western Siberia are to begin in slaughter of thousands of birds today after identifying Russia’s first outbreak of a bird flu strain that can be fatal in humans. Doctors in neighboring Kazakhstan have also (1) that a 19-year-old poultry worker (2) admitted to hospital with (3) of bird flu, only to be diagnosed (4) double pneumonia.
The H5N1 strain of avian (5) has killed 60 people (6) 2fib in Vietnam, Thailand, Cambodia and Indonesia, but has rarely been found in birds or humans (7) Asia.
Health officials (8) that HSN1 is infecting migrating birds, which could spread the (9) into Europe. Earlier this year China registered the first outbreak of H5N1 (10) wild birds, some of which (11) to breeding grounds in Siberia. These birds could come (12) contact with others flying to Europe and North America.
Russia’s (13) began in the Novosibirsk (14) , about 1,750 miles (15) of Moscow in the Asian part of Russia, early last month, but the veterinary service (16) the virus only last week. Valery Mikheyev, the chief sanitary doctor of Novosibirsk, said that teams had been (17) the (18) birds and supervising the slaughter in13 (19) villages. He said, "The state of (20) of the inhabitants of these areas gives (21) cause for alarm. Up to 6,000 people are being (22) per day.
The virus seems to have (23) only private farms that let (24) mix with wild birds. Further outbreaks were registered in the Omsk and Altai regions, but the strain had (25) to be determined, Russia’s Emergency Situations Ministry said.

观察右边的示意图。引起1760年以后图示棉花输入变化的主要原因是（）

A.棉纺织业中手工工场大量建立

B.棉纺织业逐步采用大机器生产

C.轮船、火车等交通工具的采用

D.海外市场的不断扩大