问题 阅读理解

阅读理解

    Sadness is unpleasant, and in a society where personal happiness is prized above all else, there is little

tolerance for falling in despair.Especially now we've got drugs for getting rid of sad feelings-whether it's

after losing a job, the breakup of a relationship or the death of a loved one.So it's no surprise that more

and more people are taking them.

     But is this really such a good idea?A growing number of voices from the world of mental health

research are saying it isn't.They fear that the increasing tendency to treat normal sadness as a disease is

playing fast and loose (行为轻率). Sadness, they argue, serves a useful purpose-and if we lose it, we

lose out.Yet many psychiatrists (精神病医生) insist not.Sadness has a nasty habit of turning into

depression (抑郁症), they warn.Even when people are sad for good reason, they should take drugs to

make themselves feel better.

     So who is right?Is sadness something we cannot live without or something horrible never to touch?

     There are lots of ideas about why feeling sad should become part of human life.It may be a

selfprotection strategy, as other primates (灵长类) also show signs of sadness.A losing monkey that

doesn't show sadness after it loses a fight may be seen as continuing to challenge the winning monkey-and

that could result in death.

     In humans, sadness has a further function:we may display sadness as a form of communication.By

acting sad, we tell other community members that we need support.

     Then there is the idea that creativity is connected to dark moods.There are plenty of great artists,

writers and musicians who have suffered from depression or disorder.Scientists find that people with

signs of depression perform better at a creative task, and that negative moods make people think deeply

over the unhappy experience, which allows creative processes to come to the front.There is also evidence

that too much happiness can be bad for your career.A doctor found that people who scored 8 out of 10

on a happiness test were more successful in income and education than 9s or 10s.The happiest people

lose their willingness to make changes to their lives that may benefit them.

1. The underlined word "this" refers to________.

A. taking drugs  

B. falling in despair

C. losing a job  

D. feeling sad

2. The author believes sadness is________.

A. a good thing for people's health

B. something horrible never to touch

C. a necessary function of humans

D. always to be treated as depression

3. Some animals show their sadness in order to________.

A. cheat their enemy  

B. protect themselves

C. comfort the loser  

D. challenge the winner

4. We can infer from the last paragraph that________.

A. people with great creativity tend to be happier

B. unhappy experiences contribute to a greater career

C. too much happiness can be bad for your career

D. the happiest people are the most successful ones

答案

1-4: ACBB

单项选择题

阅读下列文字,完成71-75题:遗传性疾病是因体内某种基因缺乏、基因缺欠或突变所引起的。 ① 能对其中病态基因,进行补偿、替代或修复,②能在治疗遗传性疾病方面取得很大的进展。因此,现代医学诞生了一个新科目。目前可行的是将患者细胞所需要的基因与适当的载体重组,转移于受体细胞(靶细胞)内,转移基因即有表达功能的外源性基因在受体细胞内表达并产生前所未有的基因产物,③达到治疗遗传性疾病的目的。它④为基因替代与修复奠定了基础。将生殖细胞(受精卵)作为靶细胞的基因治疗有根治效果,可在当代及患者愈后生殖的后代中免除遗传性疾病,但目前不能应用于人类,⑤它能抑制某些基因遗传,一旦失控,哪怕只有一例,也为传统的人伦观念所不允许。将无遗传观念的体细胞作为靶细胞则是可行的,但疗效报告中不会贸然出现“根治”。的字样。更重要的是选择目的基因,它是补偿缺欠基因的外源性正常基因,通常取自正常供体细胞基因组DNA或人工合成DNA的片段。供转移的目的基因必须结构完整,转移后能随细胞分裂而复制或分裂。这两个选择是治疗遗传疾病的第一步。

文中这“两个选择”是指( )。

A.选择转移基因与供体细胞基因组

B.选择载体重组与正常基因

C.选择体细胞和外源基因

D.选择靶细胞和目的基因

判断题