构成人体的三类元素包括营养元素、微量元素、有害元素

题型:判断题

问题:

构成人体的三类元素包括营养元素、微量元素、有害元素

考点:地球系统科学地球系统科学题库
题型:判断题

“脱颖自北伐,初胜湘江曲。……革命初受难,南昌举义旗。……七七抗战开,君自海外回。东进杀倭寇,举世惊风雷。……饮马扬子江,触处见将才。”上述诗文赞颂的历史人物是

A.叶挺

B.张自忠

C.周恩来

D.朱德

题型:判断题
已知一次函数y=kx+k的图象与反比例函数y=
8
x
的图象交于点P(4,n).
(1)求n的值;(2)求一次函数的解析式.
题型:判断题

下列对应关系中,哪项不正确:

A.E/C雌激素/肌酐

B.E3雌三醇

C.S/D收缩压/舒张压

D.BPS胎儿物理评分

E.IUGR胎儿宫内发育迟缓

题型:判断题

在各类岗位评价方法中,分类法更适用于规模较小、工作复杂性较低、工种较少的中小型企业,是因为()

A.分类法复杂,理解难度高,但存在较少的主观性误差

B.分类法复杂,理解难度高,且存在较多的主观性误差

C.分类法简单,理解难度低,但存在较多的主观性误差

D.分类法简单,理解难度低,且存在较少的主观性误差

题型:判断题

With unemployment rising and housing costs still high, cities around the country are experiencing a new and sudden wave of homelessness. Shelters are overflowing, and more people this year are sleeping on floors in dingy social service centers, living in cars or spending nights on the streets.

In New York, Boston and other cities, homelessness is at record levels, a consequence of a faltering (摇晃的) economy that has crumbled even further after the Sept.11 attacks.

A survey by the U. S. Conference of Mayors released last week found that requests for emergency shelter in 27 cities had increased an average of 13 percent over last year. The report said the increases were 26 percent in Trenton; 25 percent in Kansas City, Mo.; 22 percent in Chicago; 20 percent in Denver; and 20 percent in New Orleans.

An unusual confluence of factors seems to be responsible for the surge. Housing prices, which soared in the expansion of the 1990’s, have not gone down, even though the economy has tumbled. A stream of layoffs has newly unemployed people taking low-wage jobs that might have otherwise gone to the poor. Benefits for welfare recipients are expiring under government-imposed deadlines. And charitable donations to programs that help the disadvantaged are down considerably, officials around the country said, because of the economy and the outpouring of donations for people affected by Sept.11.

"This is an unprecedented convergence (集中) of calamities (灾难), " said Xavier De Souza Briggs, an assistant professor of public policy at the John F. Kennedy School of Government at Harvard. "It’s really a crisis. "

More than half the cities surveyed by the mayors’ group reported that in the last year people had remained homeless longer, an average of six months.

There is no total number for the homeless nationwide. Experts said it was difficult to compare the situation with statistics in previous decades, because counting methods have improved. Yet, several experts said they believed that the increases reported by cities like Boston and Chicago reflected a national trend.

"My impression is there is more homelessness now than there was 20 years ago, " Gary Burtless, an economist at the Brookings Institution, said, adding that he believed that economic factors were not the sole explanation.

"I think that there must be a greater segment of our population that has tenuous connections to family and friends, and therefore has fewer resources to fall back on when something very bad happens like when they lose their job, " he said.

The word "tenuous" in the last paragraph means ().

A. p

B. enduring

C. weak

D. bad

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