in a in bad need of状态.为什么去掉a呢？？？？？

来源：蜘蛛抓取(WebSpider) 时间：2011-12-08 01:14 标签： sampleappsinbad
Health & Balance
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Being in a Bad Mood May Improve Your Memory
WebMD Health News
Sept. 2, 2004 -- Being in a bad mood may make you a better eyewitness than someone who is happy, according to a new study that shows mood may have a powerful effect on memory.
Researchers found that being in a good mood made people more likely to include misleading details in eyewitness accounts. But being in a bad mood allowed them to give a more accurate account of events.
"It shows that our recollection of past events are more likely to be contaminated by irrelevant information when we are in a positive mood," says researcher Joseph Forgas, a professor at the University of New South Wales in Australia, in a news release. "A positive mood is likely to trigger less-careful thinking strategies."
Researchers say remembering personally witnessed events involves a series of complex processes that are open to a variety of influences and distortions, and this study shows that mood may play a major role in these processes and affect critical thinking skills.
"The finding makes sense in evolutionary terms," says Forgas. "Animals that are wary of their environment are more likely to perceive threats to their survival."
"This supports the idea that mood states are evolutionary signals about how to deal with threatening situations. That is, a negative mood state triggers more systematic, more attentive, more vigilant information processing," says Forgas. "By contrast, good moods signal a benign, nonthreatening environment where we don't need to be so vigilant."
Bad Moods May Improve Memory
In the study, researchers tested the ability of people to recall events under experimental conditions and in different mood states.
The results are scheduled to appear in an upcoming issue of the Journal of Experimental Social .
In one experiment, researchers had students witness a staged hostile exchange between a teacher and an intruder in a lecture hall. One week later, researchers used short, 10-minute videotapes to induce happy, neutral, or sad moods among the students. They were later asked to answer a questionnaire about the episode they witnessed that either did or did not contain misleading information. The researchers found they were more likely to recall the incident accurately a week later if they watched the sad videotapes than the happy one.
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|||||||||||||||||they went to Beijing ___ a bad time of year.A in B for C at D on选哪个?为什么呢?可是答案选d,太可恨了
C at题意表示他们在一年中的坏时节去了北京,缺失一个介词,因为表示在某个时间点,所以用at.in表示在一段时间内,for和on不表示在某个时间,on time一起表示准时,仅此而已.
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选at介词in,on与at都可用于表示时间的名词前，但用法各不相同，其区别在于： 一、用in的场合 （1）表示“在某年/月/季节”这个含义时，须用介词in。例如： She came to this city in 1980.他于1980年来到这个城市。 It often rains here in summer.夏天这里常常下雨。 （2）...
扫描下载二维码为什么 不可以It is a bad？？？_百度知道i m in a bad mood today是什么意思
i m in a bad mood today是什么意思
09-05-14 &匿名提问
意思是：我今天情绪很坏。
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我今天状态不太好的意思
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