自2014年10月1日起至2017年12月31日，对月销售额不超过（）的增值税小规模

C

Latest data shows an estimated 39.5 million people around the world are living with HIV, the virus that causes AIDS. According to the report, this means every eight seconds somebody in the world is infected with HIV, resulting in 11,000 people becoming newly infected every day.

The director of UNAIDS, Peter Piot, says most of the new infections, nearly two-thirds, are in Sub-Saharan Africa. But, the biggest increases are in Eastern Europe and Central Asia, where infection rates have risen by more than 50 percent since 2004. He says 2.9 million people died from AIDS-related illnesses this year, the highest number ever.

UNAIDS senior epidemiologist(流行病学家), Karen Stanecki, says infections are rising in countries where HIV prevention programs have not adapted to the changing nature of the epidemics(流行病).  Stanecki noted，"In Thailand, one of our past success stories, a large percentage of new HIV infections are occurring in people considered to be low risk. One third of new infections are among married women."

It says data shows increased use of condoms has resulted in drops in HIV prevalence(流行) among young people between 2000 and 2005 in a number of African countries, including Botswana, Kenya and Zimbabwe. Nevertheless, the report notes young people between the ages of 15 and 24 account for 40 percent of new HIV infections. It finds the risk behavior, such as injecting drug use, homosexuals, is a factor of concern in many regions of the world, especially in Asia, Eastern Europe and Latin America.

The report notes the emergence (出现) of injecting drug use as a factor of HIV in Kenya, Tanzania, Nigeria and South Africa is a recent development in Sub-Saharan Africa.

51. According to the news report, how many people are newly infected with HIV a year?

A. 39.5 million.            B. 2.9 million.             C. 3.5 million.              D. 4 million.

52.   The highest rate of new HIV infection is in ________.

A. Sub-Saharan Africa                                      B. Eastern Europe

C. Central Asia                                                 D. both A and B

53. The underlined word “noted” in the third paragraph mean?

A. specially mentioned                                     B. said angrily

C. fully noticed                                                D. uttered weakly

54.   Which of the following statements is Not True?

A. Most of new infections of HIV are among married women.

B. Two fifths of the new infections are among young people aged 15 to 24.

C. The risk behavior, such as injecting drug use and homosexuals, exists in many parts of the world.

D. Injecting drug use occurs in many African countries.

55.   What is the main idea of the new report?

A. More and more women in the world are getting new HIV infection.

B. The AIDS epidemic continues to grow in the world.

C. The AIDS epidemic has been reduced in the world.

D. No one can tell when the AIDS epidemic will be completely controlled.

在有效不应期

A．无论多么强的刺激都不能引起反应
B．需要阈上刺激才能产生反应
C．不能产生动作电位
D．阈下刺激也可以诱发反应

适用“互碰快赔”的案件，各环节在（）选择上需保持一致。

A.事故类型

B.车牌号码

C.赔案类别

D.厂牌型号

近年来，绿色壁垒已成为国际贸易中的主要障碍，并对我国的出口贸易产生了严重影响。对此，我国外向型企业应该（）。

①积极培育有利于保护环境的绿色产业

②依靠科技创新大力研发绿色产品

③尽量减少产品出口以避免贸易摩擦

④充分利用世贸组织规则积极应对

A.①②

B.②③

C.①④

D.②④

如用符号JD_FT和JD分别表示酚酞碱度和全碱度，若JD_FT＝0，则可判断该水样中只含有HCO₃^－碱性离子。且水中HCO₃^－的含量为〔HCO₃^－〕＝JD。（）