永恒的中 * * 精神是中华之魂,在历史的长河中积淀和发展,有其丰富的内涵。下列选项与“

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问题:

永恒的中 * * 精神是中华之魂,在历史的长河中积淀和发展,有其丰富的内涵。下列选项与“风雨同‘舟’,威武不‘屈”的精神实质一致的是()

①天行健,君子以自强不息

②天下兴亡,匹夫有责

③四海之内皆兄弟,若一家

④克勤于邦,克俭于家

 

A.①④

B.②③

C.①③

D.②④

考点:高中政治思想品德我们的民族精神我们的民族精神题库
题型:单项选择题

对VVIRV起搏器编码描述正确的是()

A.心室抑制型起搏,有频率应答,无多部位心室起搏

B.心室抑制型起搏,无频率应答,有多部位心室起搏

C.心室抑制型起搏,无频率应答和多部位心室起搏

D.心室抑制型起搏,有频率应答和多部位心室起搏

E.心房抑制型起搏,无频率应答和多部位心室起搏

题型:单项选择题

( )是指在合同中确定一个完成项目的总价,承包人据此完成项目全部合同内容的合同。

A.双务合同

B.单务合同

C.总价合同

D.单价合同

题型:单项选择题

J2-7型空气制动机白阀的霞联柱塞阀是连通或切断()与中继阀的联系

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常见的化学成因沉积构造有()。

A.鸟眼构造、后生结核、干裂、原生结核

B.鸟眼构造、晶痕、干裂、缝合线

C.鸟眼构造、晶痕、结核、缝合线

D.晶痕、结核、缝合线、干裂

题型:单项选择题

Going to the ballpark, visiting friends and playing bingo are simple diversions for many of us. But for the elderly, these social pastimes may play a critical role in preserving their physical and mental health.

(46) In fact, a new study suggests that the less time older people spend engaged in social activity, the faster their motor function tends to decline. "Everybody in their 60s, 70s and 80s is walking more slowly than they did when they were 25," says Dr. Aron Buchman, a neurologist at the Rush University Medical Center in Chicago and leading author of the study, which was published in the June 22nd issue of the Archives of Internal Medicine. (47) "Our study shows the connection between social activity and motor function--and opens up a whole new universe of how we might intervene. "

(48) An increasing body of evidence has suggested that participating in mentally stimulating activity, socializing frequently and exercising may help protect against age-related decline-at least cognitive decline. As early as 1995, neuroscientist Carl Cotman, who studies aging and dementia at the University of California at Irvine, published a paper in Nature showing that physical exercise produces a protein that helps keep neurons from dying and spurs the formation of new neural connections in the brain. (49) More recently, Cotman demonstrated in studies of elderly dogs and mice that enriching their social environment is associated with improvement in brain function.

Researchers are also finding that social activity may be linked to the same protective effect in people. A recent study of 2 500 adults ages 70 to 79, published in the journal Neurology, found that those who were able to stay mentally sharp were also those who exercised once a week or more, had at least a ninth grade literacy level and were socially active.

While further research needs to be done to establish the exact impact of social activity and exercise on specific age-related declines (50) it’s likely that a reduction in social activity may simply be a symptom of physical decline, since people may naturally withdraw from social engagement as they lose motor skills-most researchers would agree that it is not unreasonable to encourage seniors to get out there more. Only 10% of people over 65 get the recommended amount of exercise (at least 2. 5 to 5 hours a week), and given that seniors already tend to be more socially isolated than younger adults, it’s difficult to motivate them to become more active. "If you are alone, you are less likely to follow recommendations," notes Verghese. It might help, though, if you visit Grandma more often and let her know that a regular pastime may just help her stay fitter and sharper longer.

(46) In fact, a new study suggests that the less time older people spend engaged in social activity, the faster their motor function tends to decline.

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