在乙型肝炎病毒(HBV)基因组S、C、P和X区4个开放性读码框架(ORE)中,最易发

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问题:

在乙型肝炎病毒(HBV)基因组S、C、P和X区4个开放性读码框架(ORE)中,最易发生变异的是()

A.X区

B.P区

C.S区的PreS基因

D.C区的C基因

E.C区的PreC基因

考点:医学检验科住院医师临床微生物学检验临床微生物学检验题库
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下列词语中加点的字,读音完全相同的一组是

A.澳洲懊悔翱翔独占鳌头桀骜不驯

B.庇护麻痹奴婢刚愎自用一言蔽之

C.挫折拆散击柝分崩离析欢欣鼓舞

D.栽倒裁判装载披星戴月呜呼哀哉

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— Why do you look so sad?

— With so many problems________,I'm in a difficult situation. [ ]

A. settled  

B. remained to settle

C. being settled  

D. remaining to be settled

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Exhausted and unhappy, you still have to squeeze a smile to your friends, or teachers. That’s just life, you may think. But new research suggests that putting on a fake smile can worsen people’s mood and even lower work efficiency.

Lead researcher Brent Scott with other researchers studied a group of bus drivers for two weeks. They tried to find out what happened when the drivers were involved in “surface acting” or fake smiling, and the opposite, “deep acting” which means people put on real smiles by recalling pleasant memories or thinking about their current situation more positively.

The results showed that on days when drivers were forced to smile, they felt depressed and didn’t want to work. On days when they smiled due to positive thoughts, their mood improved a lot as well as their work efficiency.

The research goes against the popular belief among companies that employees should be cheerful to customers at all times. They include employees of shops, banks, call center workers and others who have face-to-face contact with members of the public. “Smiling for the sake of(为了) smiling can lead to emotional exhaustion and coldness, and that’s bad for the organization,” Scott told the Daily Mail.

The study also showed that women were harmed more by fake smiling than men. Their mood and work performance both worsened more. But they were helped more by deep acting — their mood became better and they worked more efficiently.

However, while deep acting seemed to improve mood in the short term, Scott says it’s not a long-term solution for unhappiness.

“There have been some suggestions that if you do this over a long period that you start to feel inauthentic(不真实的),” Scott said. “You may be trying to cultivate positive emotions, but at the end of the day you may not feel like yourself anymore.”

小题1:Brent Scott and others’ experiments on bus drivers suggest that ______.

A.depression among bus drivers is common

B.thinking in a positive way helps with work efficiency

C.bus drivers with pleasant memories tend to be less efficient

D.the bus drivers’ work efficiency is determined by their mood小题2:According to the article, which of the following statements about “fake smiling” is TRUE?

A.It is good for the business but bad for the employees.

B.It doesn’t work on people who are emotionally expressive.

C.It is a widely accepted cultural practice in the US.

D.It causes more harm to women than men.小题3:We can conclude from the article that the researchers think that ______.

A.people should be true to their feelings

B.smiling helps to put people in a good mood and become more efficient

C.it is unnecessary to cultivate positive emotions

D.deep acting can improve mood in the long run小题4:The article is mainly about ______.

A.the importance of smiling during face-to-face contact

B.a new study on fake smiling and its influence on people

C.suggestions on improving work efficiency

D.how to cheer up when you are exhausted

题型:单项选择题

消化性溃疡引起的腹痛,其性质特点有()

A.周期性

B.慢性、长期性

C.与进食关系密切

D.烧灼痛

E.夜间痛

题型:单项选择题

下列哪种人畜共患传染病的牲畜肉经煮熟后可食用?()

A.猪瘟

B.猪水疱病

C.口蹄疫

D.结核

E.以上都不对

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