从计算机网络组成的角度看，典型的计算机网络从逻辑功能上可分为()。A.资源子网 B.

With the development of modern science and technology, the functions of cellphones have changed greatly.  小题1:  The only difference may be that they fit in your pocket and you pay by the minute to use them. Some of the things a cellphone can do for you will be available this year:

Surf at speed

Cellphones that let you use the Web have been around for years. So, what's new? Well ,  faster third-generation (3G)  networks that let you surf at anywhere. 小题2:Possible choices are from IJG Electronics VX 8000 and Motorola V1150.Listen as you go.

小题3:  There is no doubt that it is about to change. Sony Ericsson’s new W8001 can hold around 150 songs in its 500 MB memory. And Samsung's SPH-V5400 even comes with a l. 5 GB hard drive. Mobile phones may eventually replace miniMP3 players, especially for teens. Say cheese.

Camera cellphones are not new either but most of them have limitations: around l- megapixel  (百万像素 ) .  However new technology has made 2-megapixel units more common ,and 3-megapixel units are showing up soon. Some 2-megapixel models, like Sony Ericsson's K7501, offer limited zoom and focus controls.   小题4:Portable TV.

You say you like "watching TV"? That’s what Samsung MMA700 wants to give you. The new model lets users watch popular TV programmes~ for a fee. Other choices are Nokia's 6620, Sanyo's MM740 and NEC's N940.   小题5:The above are just a handful of what you ' ll see in the coming months.  Further down the road, your mobile phone may play a host of other roles, such as mobile credit card, position locator and so on. So what is there that a cellphone can't do?

A．The NEC model lets you watch public TV - no fee.

B．Without a cellphone, you can do nothing in your daily life.

C．Nowadays, new cellphones are much cheaper than old ones.

D．Today's do-it-all mobiles have a lot in common with the computer.E. This then allows a carrier to send video, music, and games to your phone.

F. Others, like LG's recent A7110, can even capture 30 minutes of full-motion video.

G. The problem with most cellphone MP3 players is that they hold only a handful of songs.

It’s 10:30 p.m. and 11-year-old Brandon Blanco is sound asleep at home. Suddenly, a loud noise wakes him up. Naturally, Brandon reaches for his cell phone. He blinks twice, and the message on the screen becomes clear: “ R U awake?”

But the late-night text does not annoy Brandon. He gets frequent messages and calls, even after bedtime. And he can’t imagine life without them. “ If I didn’t have a cell phone, I wouldn’t be able to talk to my friends or family as often,” he told TFK.

Brandon’s use of technology doesn’t stop there. He also has a computer, a TV and three video-game consoles in his room. With so many choices, it is no surprise that when he is not at school, he spends nearly every waking minute using one or more of these devices. Brandon is hardly alone. According to a recent study by the Kaiser Family Foundation, kids aged 8 to 18 are spending more time than ever before using electronic devices. How much time? More than seven and a half hours a day on average, the study found. That’s about an hour more than just five years ago.

The jump is the result of a huge explosion in mobile devices, says Victoria Rideout, the lead author of the study. Today, nearly seven out of ten kids have cell phones. Just five years ago, it was four out of ten.

“ These devices have opened up many more opportunities for young people to use media, whether it’s on the bus, on the way to school or waiting in line at the pizza parlor,” says Rideout.

Often, kids multitask, or use more than one device at a time. “ If you’ve got a chance to do something on your computer and take a phone call and have the TV on in the background, why not?” Media expert Cheryl Olson says.

Most experts agree technology has much to offer kids. But some worry the kids could be missing out on other activities like playing outside or hanging out with friends. “ It’s a matter of balance,” says Olson. “ You’ve got to work on it.”

Multitasking while doing homework is another concern. Some kids listen to music, watch TV or use the phone while doing their homework. “It’s important to make sure that you can stop and concentrate on one thing deeply,” says Rideout.

Logan Jones, 11, of Maumelle, Arkansas, describes himself as a “game freak”. Still, he is glad not to have unlimited time with his PlayStation 2. “I’ll tell my mom I’m going to play a game, and she’ll say, ‘Okay, but only for 30 minutes,’”, Logan told TFK.

With new and exciting devices hitting stores every year, keeping technology use in check is more important than ever. “ Kids should try,” adds Rideout. “:But parents might have to step in sometimes.”

小题1:The text is mainly about kids’ _________

A．cell phone use

B．various hobbies

C．favorite video games

D．using electronic devices小题2:It can be learnt from the text that _________.

A．Brandon feels annoyed about his late-night message.

B．Olson is against teenagers’ using mobile phones.

C．many teenagers lack friends in their middle school

D．kids have too many electronic devices to choose from小题3:Which of the following is an example of multitasking?

A．Watching TV while using the computer

B．Talking on the phone while lying on the sofa.

C．Playing video games after having lunch.

D．Listening to loud music while relaxing.小题4:The underlined phrase “in check” in the last paragraph can be replaced by ______.

A．in order

B．in store

C．in sight

D．in control小题5:According to the text, Victoria Rideout would probably agree that kids should ____.

A．do homework while watching TV

B．do homework in a place without disturbance

C．spend more time on homework

D．have less homework

凡是记载和反映物业、大型或重要附属设施设备及物业管理活动的基本历史情况，对物业维护和使用以及科学研究有长远研究参考价值的文件保存年限是（）。

A.5年以内

B.15年以内

C.15～60年

D.无限期

银行国际互联网网站的特点包括（）.

A.权威性

B.便捷性

C.广泛性

D.富媒体性

E.客户自主性

《英语课程标准》规定，从（）起开设英语课程。

A.小学一年级

B.小学二年级

C.小学三年级

D.初中一年级