甲数为a，比乙数的34多b，表示乙数的式子是______．

下列各句中，划线的词语运用正确的一项是（    ）

A．倒金字塔形的“421”家庭结构使得居家养老陷入困境，社会养老服务体系又不够完善，以至中国养老问题日趋严重。

B．有人多次为芦山灾区慷慨解囊，倾尽全部积蓄；也有人声明自己将细大不捐，以抗议某些慈善机构运作缺乏透明度。

C．面对河水严重污染的现状，大学生自愿组成暑期社会实践小分队，满怀热诚地进行生态环境调查，积极宣传环保理念。

D．随着出版业的市场化和多元化，类型多样、题材丰富的作品大量涌现，其中也有一些作品粗制滥造，令人不忍卒读。

班会一般有三类：常规班会、生活会和______。

人体基本运动平面包括以下哪些（）

A.水平面

B.基本姿势位

C.额状面

D.基本解剖位

E.矢状面

药物中特殊杂质检查，应用最广泛的方法是（）

A.气相色谱法

B.荧光法

C.原子吸收法

D.薄层色谱法

E.红外分光光度法

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.

(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.