问题 选择题

After suffering a heart attack, Michael Jackson was pronounced dead, ___ a tragic end to the world’s most popular entertainer.

A.having marked

B.to mark

C.marked

D.marking

答案

答案:D

题目分析:to mark表将来,,having marked 表示的动作在 announced 之前, 显然又不符。根据句子意思,选择marking分词形式(表示分词与逻辑主语之间是主动关系)又因为句中无现象表明前后事件有先后顺序,不能用完成时态的分词形式。故选D。

点评:本题难度适中。非谓语动词是近几年高考的热点,本题是对已学知识点的回顾,需要考生能够理解该题的语言环境,进而作出正确的判断。会判断非谓语动词与它的逻辑主语之间是什么关系,需要考生掌握非谓语动词的不同形式的用法区别等。

即学即练:Mother was surprised at the news of his son ____ to college.

 A. had been admitted    B. admitted

 C. having been admitted  D. having admitted

解析:C。消息表达的应该是个事件,说明不是“被录取的孩子”,介词of后不可能接从句,说明of后为动名词的复合结构,答案是C。

单项选择题
问答题

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.

(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.