下面关于IEEE-1394的叙述中，错误的是( )。A．IEEE-1394总线的数

古罗马“市场上的铁匠铺炉火熊熊。铁匠给奴隶钉上脚镣手铐，还要给他们戴上一个铁项圈，上面刻着：‘锁住我，不要让我逃掉’这样一行字。……如果逃亡在外，奴隶主也可以很快把他抓回来。另外，还用烧红的烙铁在奴隶的前额或脊背上烙下一个印记，这种印记通常是奴隶主姓名的第一个字母”。这段材料从本质上说明   [ ]

A．奴隶犯罪后被戴上了铁项圈

B．去市场时奴隶戴上了铁项圈

C．奴隶是与奴隶主同姓的亲戚

D．奴隶是奴隶主不可侵犯的财产

根据《建设工程安全生产管理条例》的规定，属于施工单位安全责任的是( )。

A．提供相邻构筑物的有关资料

B．编制安全技术措施及专项施工方案

C．办理施工许可证时报送安全施工措施

D．提供安全施工措施费用

Trying to make a big decision while you’re also preparing for a scary presentation? You might want to hold off on that. Feeling stressed changes how people weigh risk and reward. However, an article published in Current Directions in Psychological Science, a journal of the Association for Psychological Science, suggests stressed people pay more attention to the positive sides of a possible outcome.

It’s a bit surprising that stress makes people focus on the way things could go right, says Mara Mather of the University of Southern California. She co-wrote the review paper with Nichole R.Lighthall. “This is sort of not what people would think, ” Mather says. “Stress is usually associated with negative experiences, so you’d think, maybe I’m going to be more focused on the negative outcomes.”

But researchers have found that when people are under stress, they start paying more attention to positive information and discounting negative information. “Stress seems to help people learn from positive feedback and impairs（削弱）their learning from negative feedback, ” Mather says.

When people under stress are making a difficult decision, they may pay more attention to the good sides of the alternatives they’re considering and less to the problems. So someone who’s deciding whether to take a new job and is feeling stressed by the decision might focus on the increase in salary more than the longer commute（上下班往返）.

The increased focus on the positives also helps explain why stress plays a role in addictions. People under stress have a harder time controlling their urges. “The compulsion to get that reward comes stronger and they’re less able to resist it,” Mather says. A person who’s under stress might think only about the good feelings they’ll get from a drug, while the downsides shrink into the distance.

Stress also increases the differences in how men and women think about risk. When men are under stress, they become even more willing to take risks; when women are stressed, they get more conservative(保守的). Previous research backs this up — men usually react to difficulties while trying to fight them or escape them; women try to find friends and improve their relationships.

小题1:By saying “You might want to hold off on that” in the first paragraph, the writer suggests that      .

A．you might want to delay making your big decision

B．you should save the presentation for later

C．you should avoid taking risks

D．you might benefit from the stress小题2:From the article, we can conclude that stress       .

A．often leads people to take more risks

B．often leads people to make balanced decisions

C．makes people think more of negative results

D．makes people ignore the negative side of problems小题3:Which of the following is TRUE according to the article?

A．Stress is helpful in getting rid of addictions.

B．People who are addicted to drugs are easily stressed.

C．When women are stressed, they do not tend to take risks.

D．When men are stressed, they are more likely to develop an addiction.小题4:What is the central theme of the article?

A．Stress can affect decision-making.

B．Stress increases our desire to get rewards.

C．We should think more about the upside of problems.

D．There is a link between stress and negative experiences.

预授权撤销交易可以是对原始预授权交易的全额或部分金额撤销。