试题库在线考试题库-历年真题模拟试题及答案-考博英语在线试题测试中心-希赛网

北京大学

Only when faced with overwhelming evidence of being treated differently than the men who surrounded me（），briefly, with the notion that I was different in gender-related ways from my male colleagues.

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In China, minimum wage becomes higher in many places. But people disagree over its benefits and drawbacks. Supporters say it increases the worker’s standard of living, while opponents say it increase unemployment. What do you think?

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Wal-Mart announced Thursday afternoon that it would introduce a program nationwide called (1) “Pick Up Today” that allows customers to submit orders online and pick up their items few hours later in their local store. (2) The move is not revolutionary — Sears and Nordstrom，as instance，already have similar programs.(3) Retailers say that tying online and in-store inventory together lets them to sell more products. (4) Nordstrom recently combined its inventory so that if the online stockroom is out of a jacket，a store that has it can ship to the Web customer. (5) Encourage customers to retrieve items they have ordered online in a store increases visits to the stores，which usually increases sales. (6) Best Buy offers both store pickup and “ship to store, where items are shipped free from a local store. Ace Hardware, J. C. Penney and Wal-Mart itself are among the others offering “ship to store” programs.In Wal-Mart5s program, (7) that is expected to be nationwide by June, customers can select from among 40, 000 items online. (8) They will send a text message or e-mail alerting them when the order is ready，which usually takes about four hours.(9) “ Not only we see it as a nice convenience for customers，but we also saw it as a way to drive incremental traffic to the stores，and incremental sales,” said Steve Nave, senior vice president and general manager of Walmart. Com.(10) The program will include about 40, 000 items likewise electronics，toys, home decor and sporting goods. (11) As of now，it does not include groceries，though Mr. Nave did dismiss that possibility.(12) “We’re not ready to talk today about everything that’s going on in grocery，” he said. “What we，ve tried to do is (13) focus on those categories where customers are most likely to be willing to make the purchase after they touch it or look at it. (14) This is a convenient play，trying to figure out what are the things that are going to drive more customers into the stores. ”Wal-Mart also announced that (15) it was shortened the time customers would have to wait for ship-to-store items，to four to seven days, from seven to 10 days.

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Many adults may think they are getting enough shut-eye, but in a major sleep study almost 80 percent of respondents admitted to not getting their prescribed amount of nightly rest. So, what exactly is the right amount of sleep? Research shows that adults need an average of seven to nine hours of sleep a night for optimal functionality. Read on to see just how much of an impact moderate sleep deprivation can have on your mind and body.By getting less than six hours of sleep a night, you could be putting yourself at risk of high blood pressure. When you sleep, your heart gets a break and is able to slow down for a significant period of time. But cutting back on sleep means your heart has to work overtime without its allotted break. In constantly doing so, your body must accommodate to its new conditions and elevate your overall daily blood pressure. And the heart isn’t the only organ that is overtaxed by a lack of sleeps. The less sleep you get, the less time the brain has to regulate stress hormones, and over time, sleep deprivation could permanently hinder the brain’s ability to regulate these hormones, leading to elevated blood pressure.We all hang around in bed during our bouts of illness. But did you know that skipping out on the bed rest can increase your risk of getting sick? Prolonged sleep deprivation has long been associated with diminished immune functions, but researchers have also found a direct correlation between “modest” sleep deprivation — less than six hours — and reduced immune response. So try to toughen up your immune system by getting at least seven hours of sleep a night, and maintaining a healthy diet. You’ll be glad you got that extra hour of sleep the next time that bug comes around and leaves everyone else bedridden with a fever for three days.During deep REM sleep, your muscles (except those in the eyes) are essentially immobilized in order to keep you from acting out on your dreams. Unfortunately, this effort your body makes to keep you safe while dreaming can sometimes backfire, resulting in sleep paralysis. Sleep paralysis occurs when the brain is aroused from its REM cycle, but the body remains in its immobilizing state. This can be quite a frightening sensation because, while your mind is slowly regaining consciousness, it has no control over your body, leaving some with a feeling of powerlessness, fear and panic. Most people experience this eerie phenomena at least once in their lives, but those who are sleep deprived are more likely to have panicked episodes of sleep paralysis that are usually accompanied by hallucinations, as well. For a second, imagine all of your memories are erased; every birthday, summer vacation, even what you did yesterday afternoon is completely lost, because you have no recollection of them. It’s a chilling thought, but that is what a life without sleep would be like. Sleep is essential to the cognitive functions of the brain, and without it, our ability to consolidate memories, learn daily tasks, and make decisions is impaired by a large degree. Research has revealed that REM sleep, or dream-sleep, helps solidify the “fragile” memories the brain creates throughout the day to that they can be easily organized and stored in the mind’s long-term cache.1.According to the passage, what is the meaning of “sleep deprivation”？2.Which of the following statements is TRUE according to Paragraph 3?3.Why is there the so-called “sleep paralysis”？4.Which of the following statements is TRUE according to the last paragraph?5.What effects of sleep deprivation on human mind and body are discussed in this passage?

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