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【H3】
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Population Densities
The average population density (密度) of the world is 47 persons per square mile. Continental densities range from no permanent inhabitants in Antarctica to 211 per square mile in Europe. In the western hemisphere, population densities range from about 4 per square mile in Canada to 675 per square mile in Puerto Rico. In Europe the range is from 4 per square mile in Iceland to 831 per square mile in the Netherlands.
Within countries there are wide variations of population densities. For example, in Egypt, the average is 55 persons per square mile, but 1,300 person inhabit each square mile in settled portions where the land is arable (适合耕种的).
High population densities generally occur in regions of developed industrialization, such as the Netherlands, Belgium, and Great Britain, or where lands are intensively used for agriculture, as in Puerto Rico and Java.Low average population densities are characteristic of most underdeveloped countries.
Low density of population is generally associated with a relatively low percentage of cultivated land.This generally results from poor quality lands. It may also be due to natural obstacles to cultivation, such as deserts, mountains, or malaria-infested (疟疾横行的) jungles; to land uses other than cultivation, as pasture and forested land; to primitive methods that limit cultivation; to social obstacles.
More economically advanced countries of low population density have, as a rule, large proportions of their populations living in urban areas. Their rural population densities are usually very low. Poorly developed countries of correspondingly low population density, on the other hand, often have a concentration of rural population living on arable land, which is as great as the rural concentration found in the most densely populated industrial countries.
Which of the following area has the highest average population density？
【H7】
US States Do Poorly in Women's Health
Not a single US state meets basic federal goals for women's health, and the nation as a whole fails except in two areas— mammograms (乳腺X光照片) and dental (牙齿的) check-up—researchers said on Thursday.
Millions of women lack health insurance, and states make it difficult to enroll(加入)in Medicaid, the state-federal health insurance plan for the poor, according to the report.
And few states are doing anywhere near enough to help women quit smoking—the leading cause of death in the United States.
"The nation as a whole and the individual States fall short of meeting national goals," reads the report put together by the National Women's Law Center and the Oregon Health ＆ Science University. "These health goals provide a road map for assessing the status of Women's health."
Of 27 measures examined by the group, from screening for diseases to actually treating them, the nation passes on only two, the researchers said.@"The nation is so far from the health goals that it receives an overall grade of' unsatisfactory'," they wrote.
The problem seems to be a lack among states of an overall plan for health in general, the NWLC said.
"State policy makers' piecemeal (一件一件做的) approach to our health care crisis has resulted in a complex and ineffective system that fails to meet the health care needs of women, "Judy Waxman, NWLC Vice President for Health, said in a statement.
"Lawmakers need to take a comprehensive, long-term approach to meeting women's health needs and tackle this serious problem that troubles so many families."
In which area is successful in the nation？
以下有关对中国纺织品的特殊保障措施，说法正确的是：A．某一世贸组织成员认为《纺织品与服装协定》所以下有关对中国纺织品的特殊保障措施，说法正确的是：
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