Megan and John realized that their house was too messy for a new baby, so they decided to ________ their house before the baby was born.A. throw awayB. take awayC. grow upD. straighten up

四、识别句子中的语法成分共5题，每题2分单选32.Working with the American Statistical Association, the journal has appointed seven experts to a statistics board of reviewing editors.Working with the American Statistical Association在句中的成分是:A. 主语B. 定语C. 状语D. 表语

阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。 Do you remember the good old days? Innocent times spent sharing documents and executable files without a care in the world. Okay, every month or so you might encounter a boot sector virus — but they were easy to deal with even if the anti-virus software didn't pick them up. 　 　But those long lazy summers disappeared too fast. Macro viruses made Information Technology (IT) administrators grow up fast as they realized there was a type of virus which could spread very quickly throughout an organization. It wasn't unusual to find hundreds of computers within personal company infected by viruses transmitted via email attachments. The IT staff were amongst the fittest departments in your company, running from Personal Computer (PC) to the next cleaning them up. 　 　There had to be a better way. Companies now realize that viruses aren't "urban myths", and can have a serious impact on their operations. They invest in anti-virus software on the desktops, servers and email gateways and even put in place procedures to ensure their anti-virus is up-to-date with the very latest detection routines. 　 　It sounds like companies have put in place adequate defenses to protect against viruses. But have they?　 　Anti-virus software detects most of the viruses your users are likely to encounter — often without the user even knowing. However, the software must be updated regularly, preferably daily in any large company. Even then, a very new virus can infect your users. With the rapid transmission of files through networks and the Internet, a virus can spread a considerable distance before it can be identified and protected against. Fortunately, only a few viruses ever do this but the likes of Melissa and the Love Bug can inflict serious damage before their progress is stopped. Whilst employees become suddenly aware during the ensuing media excitement, they soon forget about the virus threat as the stories disappear from the news headlines.　 　This is the danger. Complacency can set in when there is no perceived "action" on the virus front with no global crisis, and the importance of being vigilant about viruses recedes in your users' minds. They forget what the big deal was in the first place — after all, anti-virus software deals with the viruses, doesn't it? And isn't it the IT department's job to look after this sort of thing? 　 　Before you know it your users are opening unsolicited attachments once more, downloading unauthorized software, and putting your company's data and credibility at risk. All because the users think that they are working in a safe environment. Employees see anti-virus software, firewalls and IT departments as guarantees that their computers will work and be safe. Of course, there aren't any guarantees. Anti-virus software plays one, albeit important, part in the defense of your company from malicious attack but the security of your computer system is only as strong as the weakest link. And that, more often than not, is the human factor. 　 　No employer wants to come across as a killjoy or an ogre. Most will willingly accept that the happiest employees are those who feel that they are respected and trusted by their employer. Many companies accept that employees will send and receive a certain amount of personal email and make the odd personal telephone call. 　 　However, the worry comes when employees start risking company security in pursuit of personal amusement. Funny screensavers and games downloaded from the Internet can seem harmless enough but they could easily be harboring a dangerous virus. 　 Software downloaded from the net is often unlicensed and unsupported, and may cause conflicts with existing software in use at your company. Unlicensed, pirated software is an ideal vector for a computer virus. Virus writers and hackers often use such software as the ideal "kick-start" for their virus distribution.　 It is vitally important that employees be educated about the virus threat but this cannot be a one-off event. The potential threat should always be in the back of an employee's mind and precautionary measures should be taken as a matter of course. There is no harm in reminding people about what could happen if they let their guard down. In the end, education is the key to a virus-free environment and this is a continual process. It may not be the most exciting thing on the agenda but it works. 　 　The lesson is simple. You can have the best software in the world protecting your company's defenses; you can even be the biggest IT company in the world; but without your users practicing safe computing they will always be the weakest link. 　 56. Which of the following best summarizes the main idea of the passage? A. Employees welcome the free software available on the Internet and they download a lot of it. B. Employees should be constantly warned about virus threats to ensure the normal functioning of the company's computer system. C. Employees like to take advantage of the facilities in their companies to handle their personal matters. D. Employees take anti-virus software, firewalls and IT staff as guarantees for the normal functioning of their PCs. 57."Those long lazy summers" in paragraph 2 refers to __________. A. the time when people were not too much bothered by computer viruses B. the time when people used free documents and executable files C. the time when people could take a long nap after lunch D. the time when people frequently encountered different boot sector viruses 58. It can be concluded that __________. A. computer virus threats have never been given enough attention B. computer viruses can be avoided for good with good anti-virus software C. computer virus threats have always been in the mind of computer users D. computer viruses can never be avoided even when IT staff regularly update software 59. Employers are likely to do all of the following except that __________. A. they criticize their employees for what they don't do well B. they allow their employees to make some personal telephone calls C. they do what they can to make their employees feel respected and trusted D. they allow their employees to send and receive some personal email 60. The best way to minimize the negative influence that computer viruses may bring is __________. A. to get the best, up-to-date software B. to have the best IT department C. to educate computer users D. to download free software

Directions: Suppose your university is conducting a survey to collect students' opinions of online classes. You are to write a response to the survey about their advantages and disadvantages, and what improvements can be made. You will have 30 minutes for the task. You should write at least 120 words but no more than 180 words.请输入本题答案：

It was about 30 seconds before Alex ______ from the water; we were quite scared.A. emergeB. emergesC. emergedD. emerging

“Phantom” Traffic Jams Are Real—and Scientists Know How to Stop Them[A] Traffic jams are a common problem of most big cities, either in developed or in developing countries, but one kind of traffic jams in particular can be especially frustrating. These are generally known as “phantom” traffic jams, in which dense traffic crawls to a halt for no apparent reason at all.[B] “When caught in such a traffic jam, it is common for drivers to assume that there must be an accident, or construction or something,” said Massachusetts Institute of Technology (MIT) computer science professor Berthold Horn. “And then you drive and drive and drive … and there isn’t anything there.”[C] The exact cause of these phantom traffic jams has long remained a mystery. But now, new research has found the cause and researchers may have come up with a solution for this frustrating traffic pattern: maintaining equal spacing between cars on the road, rather than driving so closely behind another vehicle that a collision (碰撞) is likely if that vehicle brakes suddenly.[D] Horn said phantom traffic jams are an emergent property of the flow of vehicles down a highway. A phantom jam begins when a car in dense traffic slows down even slightly, which causes the car behind that vehicle to slow even more—and the slowing action spreads backward through the lane of traffic like a wave, getting worse the farther it spreads. Eventually, the cars far behind are forced to stop completely or risk hitting the slower vehicles ahead—and so the traffic grinds to a halt over nothing, Horn said.The age-long mystery has now been resolved as to how phantom traffic jams are caused. ____12____

To reap the benefits of physical exercise, you should exercise ________, and for at least half an hour each time.A. regularB. regularlyC. efficientD. efficiently

8.Jennifer couldn't ___ her tears when she was told her grandmother had survived the operation.A. keep backB. pay backC. go backD. look back

We have been practicing for so long and so hard that our team should ________ winning the game.A. take pleasure inB. open the door toC. stand a chance ofD. make the most of

I'm not a critic, but I am a partisan for conversation. To make room for it, I see some first steps. At home, we can create "sacred" spaces for conversation while doing domestic chores: the kitchen, the dining room. We can make our cars a place free of little devices. We can be a consultant to our children through the demonstration of the value of conversation. At work, we can do the same thing. Employees asked for casual Fridays; managers may "collaborate" and introduce conversational Thursdays.What is the author's attitude toward conversation?