1. **Computers ___ for many years.** - **A. have used**:错误。Computer(电脑)本身不会主动“使用”,需用被动语态(be used)。 - **B. have been used**:正确。“for many years”强调持续到现在的动作,需用现在完成时,且主语computer是被使用的对象,故用被动语态结构(have been + 过去分词)...
The study controlled for income and race; between two similar students, the one who used computers more, generally scored worse. * Home computer use, by contrast, wasn't as harmful to academic achievement. Many students in many high performing nations reported spending between o...
百度试题 结果1 题目 ( B )4. What may people who can't afford com-puters think of the used computers? A. Expensive. B. Useful. C. Out-of-date. D. Bad. 相关知识点: 试题来源: 解析 答案见上 反馈 收藏
Most computers and all smartphones and tablets these days come equipped with a built-in webcam. However, for someone who spends a lot of time participating in video calls, virtual meetings or live streams, the resolution and sound quality of that web cam might not be go...
In the near future, the doctors who treat our illness might be tiny machines that swim through our bodies. Some movies have played with the idea of making machines the size of a cell (细胞). Today robot technology has brought the idea closer to the real life. In my laboratory, I’m ...
man who cannot move his arms or handshas used his thoughts to write on a computerscreen.man has been paralyzed fromthe neck down for almost a decade. Scientists implantedtwo tiny sensors into the man's brain. The scientists2(give) this method two names-brain-to-text" andmindwrting". ...
Depending on how your computer and other devices are configured, a stranger who joins your WiFi might gain access to the files that you share among computers, printers, and other connected devices. While it’s certainly possible to restrict access to these files, most people lack the required ...
Both children and adults receive harassing or abusive email. Sadly, there's no easy way to trace it back to a sender who doesn't want to be found.
⒕To my opinion,computers will enter every family in the near future.⒖The machine is used to working for man.⒗She married the man because what he had done for her.⒘A hundred of people attended the meeting last night.⒙Tell me how long she will be back,in ten days or a week?⒚...
when were computers invented?how were computers invented?what are they used for? 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 1942年由法国数学加巴斯卡所发明的巴斯卡机,这台机器是由许多的齿轮与杠杆所组成的.电脑可以变成一个加法累加器. 解析看不懂?免费查看同类题视频解析查看...