单选题Insomnia, or “poor sleep”, can have bad effects on a persons health and general well-being. It can_____21on both our physical and mental health and can lead to other health_____22. Insomnia can b

单选题 The American recovery seems to be picking up pace. The growth seems to be everywhere except the place it matters most—labour markets. Employment in America turned in a surprisingly poor performance in November, indicating that recovery still hasn't gotten the job creation machine turning steadily. The Bureau of Labour Statistics (BLS) reported a disappointing gain of only 39,000 jobs for the month of November. The figure came in well below expectations. In October, on Wednesday a private employment report estimated that the economy added 93,000 private sector workers. Markets had expected one of the strongest reports of the recovery so far. That's not what they received. In November, according to the BLS, private employers added just 50,000 new jobs—the worst performance since April. Within the private sector, drops in employment among goods-producing and retail trade firms were offset by new hires among professional and business services and in the health and education sectors. The unemployment rate rose to 9.8%—its highest level since April and close to the 10.1% recession peak. At 15.1 million, the number of unemployed workers rose back to its April high. Fully 6.3 million people have been out of work for more than 27 weeks. Many of these workers are now cycling off federal emergency unemployment benefits, which expired on November 30. Congress has yet to re-authorise the emergency benefits package, as it has done so many times through the recession. Some 2 million jobless workers may lose benefits by the end of 2010, and perhaps 4 million or more will lose them by April. There is little to be happy about in this report. But there are some indications that the November numbers may be an exception. September's job losses were revised down to 24,000 in this report, while October's job gains were revised upward, from 151,000 to 172,000. Through November, weekly data on initial jobless claims showed significant improvement. And of course, many other indicators have been flashing positive signs in recent weeks. It's likely that the November figures will be revised up in future months to show a better performance more in keeping with broader trends. And it's important to remember that monthly data are noisy. America's labour markets have yet to generate job growth sufficient to bring down the unemployment rate. But the pace of recovery has been improving. There is good reason to suspect that when all is said and done this report will appear as a tiny deviation from a strengthening upward employment trend. All the same, policymakers in Washington weighing whether to extend unemployment benefits and tax cuts should pay attention to the obvious weakness in labour markets.

单选题He plays tennis to the ______ of all other sports. A. eradication B. exclusion C. extension D. inclusion

单选题The director often says it is difficult to design a program that will meet the ______ needs of all our users. A. diverse B. distinctive C. distinct D. distinguished

单选题The first balls were probably made of ______.

单选题It was sunrise on an August morning when the captain and his crew cast their nets some 50 miles south of Louisiana in the Gulf of Mexico. As the net was pulled over, the contents were poured out follo

单选题Bob: Why didn't you come to my party last night?Bill: I'm sorry, ______ I had to visit my grandmother at the hospital.

单选题Professor Taylor's talk has indicated that science has a very strong ______ on the everyday life of non-scientists as well as scientists.

单选题The team should play very hard because the championship of the state was______.

单选题Which of the information is true according to the passage?

单选题Like other religious groups, the Christian church's strong emphasis on holiness is essential to salvation. A. deemed B. doomed C. destined D. depicted

单选题He had tried everything but it made little ______.

单选题 Old stereotypes die hard. Picture a video-game player and you will likely imagine a teenage boy, by himself, compulsively hammering away at a game involving rayguns and aliens that splatter when blasted. Today a gamer is as likely to be a middle-aged commuter playing 'Angry Birds' on her smartphone. In America, the biggest market, the average game-player is 37 years old. Two-fifths are female. Even teenagers with imaginary rayguns are more likely to be playing 'Halo' with their friends than playing alone Over the past ten years the video-game industry has grown from a small niche business to a huge, mainstream one. With global sales of $56 billion in 2010, it is more than twice the size of the recorded-music industry. Despite the downturn, it is growing by almost 9% a year. Is this success due to luck or skill? The answer matters, because the rest of the entertainment industry has tended to treat gaming as being a lucky beneficiary of broader technological changes. Video gaming, unlike music, film or television, had the luck to be born digital: it never faced the struggle to convert from analogue. In fact, there is plenty for old media to learn. Video games have certainly been swept along by two forces: demography and technology. The first gaming generation—the children of the 1970s and early 1980s—is now over 30. Many still love gaming, and can afford to spend far more on it now. As gaming establishes itself as a pastime for adults, the social stigma and the worries about moral corruption that have historically greeted all new media, from novels to pop music, have dissipated. Meanwhile rapid improvements in computing power have allowed game designers to offer experiences that are now often more cinematic than the cinema. The industry has excelled in two particular areas: pricing and piracy. In an era when people are disinclined to pay for content on the web, games publishers were quick to develop 'freemium' models, where you rely on non-paying customers to build an audience and then extract cash only from a fanatical few. In China, where piracy is rampant, many games can be played online for nothing. Finns instead make money by selling in-game perks and 'virtual goods' to dedicated players. China is now the second-biggest gaming market, but does not even rank in the top 20 markets for the music business. As gaming comes to be seen as just another medium, its tech-savvy approach could provide a welcome shot in the arm for existing media groups. Time Warner and Disney have bought games firms; big-budget games, meanwhile, now have Hollywood-style launches.

单选题It happened in a flash, although ______ everything seemed to occur in slow motion, as though I were watching from another planet.

单选题--What do you think of the ______ car?--I think it much better than his ______ one.

单选题I ______ come yesterday, but I could not.