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问题 单项选择题

下列有关RNA分类、分布及结构的叙述错误的是

A．主要有mRNA，tRNA和rRNA三类
B．tRNA分子量比mRNA和rRNA小
C．胞质中只有mRNA
D．rRNA可与蛋白质结合
E．RNA并不全是单链结构

答案

参考答案：C

单项选择题

《劳动争议调解仲裁法》第五条规定：“发生劳动争议，当事人不愿协商、协商不成或者达成和解协议后不履行的，可以向调解组织申请调解；不愿调解、调解不成或者达成调解协议后不履行的，可以向劳动争议仲裁委员会申请仲裁；对仲裁裁决不服的，除本法另有规定的外，可以向人民法院提起诉讼。”关于这一规定，下列哪一说法是错误的( )

A．从法的要素角度看，该规定属于任意性规则
B．从法的适用角度看，该规定在适用时不需要法官进行推理
C．从法的特征角度看，该规定体现了法的可诉性特点
D．从法的作用角度看，该规定为行为人提供了不确定的指引
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问答题

To get help, Internet addicts tired of their square-eyed, keyboard tapping ways need look no further than the Web for counseling. There is now an online counseling service at www. relate, org. nz for Internet obsessives. Just e-mail the details of your Internet-induced crisis and help comes direct to your inbox. (46)The new breed of cybertherapists see nothing strange about offering help through the very medium that is swallowing their clients’ free time and splitting their marriages.
Getting hooked on the Internet isn’t confined to a few computer nerds. It’s on the rise everywhere—and women are the most likely addicts. The old stereotypical addict was a young man who spent hours playing games, downloading software or reading messages on newsgroups. (47)Yet, the new image is of a young woman who fritters away hours e-mailing friends, buying books and CDs online, talking in chatrooms and looking for information for next year’s holiday.
Ingrid Parker, once a slave to Internet chatrooms, found her experiences so devastating that she wrote a book to help other addicts break the habit. (48) Her computer dream turned to nightmare when she sold up and moved to be with her cyberpal (who had just left his wife), only to be told a week later that the couple were getting back together. The heart-breaking turn of events gave her the motivation to control her addiction—and write the book Caught in the Web.
For Ingrid Parker, anyone who is married or in a sound relationship should not really be spending hours talking to someone else and ignoring their nearest and dearest. (49)While Parker provided her own therapy by putting her experiences down on paper, she recommends others take up the online counseling offer, or log off from the Worldwide Web gradually.
She said, "It’s like smoking. It’s not a good idea to suddenly go cold turkey. People often e mail me about the problem and I tell them to gradually wean themselves off and not to switch to a scheme where you pay per hour for online time. (50)If they break their resolution, all they end up with then is the same old problem plus money difficulties for the long hours they have spent logged in to the Internet. "
Of course, the Internet is definitely addictive but if you can keep it in control it has advantages, too. Using it can be a steep learning curve so it helps you become very quick at learning. Also there is a huge demand for people in the field of Information Technology (IT) and hours on the Internet are great training.
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