维生素E是一种溶解于油中的维生素,它是一种抗氧化剂,能清除氧自由基,从而保护细胞膜上

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问题:

维生素E是一种溶解于油中的维生素,它是一种抗氧化剂,能清除氧自由基,从而保护细胞膜上的脂质,而脂质的氧化与冠心病、癌症、衰老等密切相关。总之,维生素E是人体不可缺少的营养成分。但是“需要”并不意味着越大越好。维生素E缺乏在人群中很少发生,只有几种人可能存在问题:胆汁缺乏或脂肪代谢困难的人;罕见的基因异常导致缺乏维生素E转移蛋白的人;因早产而体重严重不足的婴儿。这些情况在人群中都不易出现。 这段文字所传达的观点是:()

A.正常人没必要补充维生素E 

B.应该正确认识维生素E的作用 

C.人们对维生素E的认识存在误区 

D.要特别注意可能缺乏维生素E的人

考点:地方公务员行政职业能力测试2014年安徽省公务员录用考试《行测》真题
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张某在百货商场购买一台彩电,使用三个月后出现故障。在“三包”有效期内,经两次修理仍无法正常使用。此时市场上已无同类型号彩电。依照有关法律规定,该事件应如何解决

A.张某只能要求再次修理

B.按照销售者单方意见执行

C.张某只能要求更换为其他型号的彩电

D.百货商场应予退货,但可以抵销折旧费

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制订日平均最高容许浓度的目的是防止

A.出现刺激、过敏或慢性中毒

B.发生慢性中毒或蓄积现象及远期效应

C.出现过敏、刺激或中毒等急性危害

D.发生致癌作用

E.发生“三致”作用

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The United Nations says forty million people or so around the world went hungry in 2008, mainly because of higher food prices. Early estimates from the UN Food and Agriculture Organization (FAO) show that 963 million people did not get enough to eat.

World food prices have dropped since early 2008. Prices of major crops have decreased by more than half from their height earlier last year. But they remain high compared to earlier years.

But FAO official Hafez Ghanem says lower prices have failed to end the food crisis (危机) in many poor countries. “For millions in developing countries,” he says, “getting enough food every day to live an active and healthy life is a distant dream. ”

The FAO says food shortage is a threat to people's health. Today, two-thirds of the world's undernourished people live in just a few countries. These are India, the Democratic Republic of Congo, Bangladesh, Indonesia, Pakistan, Ethiopia and so on.

A report on food insecurity warns that the current economic crisis could send even more people into hunger and poverty.

In sub-Saharan Africa, the percentage of the people who continually go hungry fell from 34% in 1997 to 30% in 2008. But the FAO says Ghana is the only country that has reached two sets of hunger reduction targets. These were set by the 1996 World Food Summit and the Millennium Development Goals. The main reason is the growth in agricultural production in Ghana.

The FAO says some countries in Southeast Asia like Thailand and Vietnam have made progress in hunger reduction goals. But South Asia and Central Asia haven't, and North Korea is still in hot water.

小题1:What FAO official Hafez Ghanem says implies(暗示)__________

A.it's easy but takes long to provide people with enough food

B.enough food can make people more active and healthier

C.there is difficulty solving the food shortage in a short time

D.people in developing countries will never get enough food小题2:The underlined word "undernourished" in Para. 4 probably means ________.

A.hungry and unhappy

B.unhealthy for lack of food

C.not fat because of poverty

D.undeveloped and poor小题3:What is the best title of this passage?

A.The food production of the world

B.The hunger reduction target of the FAO

C.The food shortage around the world

D.The solution to the global food shortage

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风险收益率

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在化工生产中,四个过硬指什吗?

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