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问题 单项选择题

消费者组织不得从事( )，不得以牟利为目的向社会推荐商品或服务。

A．商品经营和营利性服务

B．广告宣传

C．推荐服务

D．监督工作

答案

参考答案：A

解析： 《消费者权益保护法》第三十三条规定，消费者组织不得从事商品经营和营利性服务，不得以牟利为目的向社会推荐商品和服务。

单项选择题

Recent epidemiological studies have shown that the residents of Greenborough County have substantially higher rates of pancreatic and stomach cancer than do the residents of the state as a whole. Researchers have concluded that the high rates of these cancers are due to the presence in the county of a large petrochemical facility that manufactures chemicals known to be carcinogenic.
Which of the following, if true, most weakens the researchers’ conclusion ？（）

A. The county’s residents have the highest rate in the state of smoking, a habit that has been conclusively linked with higher rates of several types of cancer.

B. The residents of the county get their water from springs that could not have been contaminated by the petrochemical plant implicated by the researchers.

C. The petrochemical plant has been found to be in violation of EPA emissions standards five times in the last two years.

D. Residents of Greenborough County, like people throughout the state, are fond of spicy and fatty foods that have been linked to a number of health problems.

E. There are no known medical treatments that can permanently halt the development of certain forms of pancreatic cancer.
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单项选择题 A3/A4型题

患儿男，生后2天，出生体重为2400g。因吸入性肺炎入院，入院时患儿呼吸急促，口唇稍发绀。即置于辐射保暖床上抢救。

该患儿吸氧的流量应选择每分钟为（）

A.1L

B.2L

C.3L

D.4L

E.5L
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