单选题此题为音频题

单选题English primrose need to be grown in rich damp soil with plenty of ______ or compost worked into it. A. marijuana B. manure C. malt D. mallet

单选题Nobody yet knows how long and how seriously the shakiness in the financial system will ______ down the economy. A. put B. settle C. drag D. knock

单选题More and more people choose to shop in a supermarket as it offers a great ______ of goods. A. variety B. mixture C. extension D. combination

单选题Ever since Geoffrey sent a sizeable cheque to a well-known charity he's been ______ with requests for money from all sides. A. devastated B. smashed C. bombarded D. cracked

单选题 The newly-built Science Building seems ____________enough to last a hundred years.

单选题 茶拥有5,000年的历史。传说，神农氏(Shen Nong)喝开水时，几片野树叶子落进壶里，开水顿时散发出宜人的香味。他喝了几口，觉得很提神。茶就这样发现了。 自此，茶在中国开始流行。茶园遍布全国，茶商变得富有。昂贵、雅致的茶具成了地位的象征。 今天，茶不仅是一种健康的饮品，而且是中国文化的一个组成部分。越来越多的国际游客一边品茶，一边了解中国文化。

单选题That a different component part of the vaccine is necessary is principally due to the variable change of ______.

单选题When enacting the prohibition laws, government officials assumed that ______.

单选题Only when he had done it ______ that he had made a mistake.

单选题 How to Fall Asleep? A. It's 4 a.m. The clock ticks, the moon glows, the dog snores and you just stare. Perhaps you stare into the blackish red of the inside of your eyelids as you lie still, thinking if you pretend to be sleeping, the real thing will surely come. Or maybe you stare the laundry on the floor, then the glowing 4:01 a.m. time, as you turn and shift and stare some more. And you know you shouldn't be staring: you should be sleeping! You should be logging those crucial seven-plus hours of quality sleep each night, and the frustration that you cannot will make you feel angrier at this 4:02 a.m. stare session. And it's hard to fall asleep when you're infuriated (激怒). B. So what do you do? The first step to getting more sleep is to perfect your sleep hygiene (卫生；保健). That means developing a regular sleep schedule, using your bed only for sleep, and ditching electronics and caffeine well before bedtime. But that second step is for the daylight hours. The first step is to get to sleep now, so you can grab at least a couple hours before the birds start chirping (鸣叫). The tips below might help you sleep easier. Here's the advice of Eric Olson, co-director of the Center for Sleep Medicine at the Mayo Clinic in Rochester Minn., and Harneet Walia, a doctor in the Cleveland Clinic's Sleep Disorders Center: C. Get out of bed. When you lie awake in bed, you send yourself the wrong message. 'You're basically training your body not to sleep in bed, but to lie there and not sleep,' Walia says. 'And your mind can get conditioned to that.' Olson puts it another way, 'The longer we lie there and get frustrated in that environment, the more we come to anticipate it next time we're there,' he says. 'We come to associate the bedroom with not sleeping well.' So if you're unable to sleep for about a 15 or 20 minute stretch, slip into your slippers and out of the room. Try something relaxing and non-stimulating. Listen to music. Read a book. Even consider cleaning the house or doing the dishes, Olson suggests. A bath might do the trick, according to the National Heart, Lung, and Blood Institute, because sleepiness can develop from the post-bath drop in body temperature. Whatever activity you choose, do it away from bed, and return when you're feeling tired. D. Try relaxation techniques. Use whatever relaxation tips you know to combat this inappropriately timed alertness. Try your favorite calming yoga pose. Neuroscience (神经科学) researcher Catherine Kerr explains a simple way of relaxing through breathing. You simply note the rising and falling of your breath, and focus on the parts of your body where you feel your breath, whether it's in the lungs, tip of your nose or elsewhere. E. Walia suggests progressive muscle relaxation: Working from your toes to your forehead, tightly tense each muscle group for five seconds, and then relax. Visualization is another classic relaxing technique, in which you picture yourself someplace pleasant and calm. And what about the mother of all sleep remedies—counting sheep? Olson views this as a 'mental distraction technique,' like visualization. With sleep, he says, 'the harder you try to get it, often the more elusive (难以捕捉的) it is.' So whether you're counting farm animals or picturing yourself in a hammock (吊床), the idea is the same, Olson says. 'You're getting your mind off of 'I can't sleep; I can't sleep; I can't sleep,' and onto something else.' F. Ease anxiety. Sometimes the sleeplessness stems from worry. Your brain is overworking, thinking about your bank account and the big meeting tomorrow. For people who consistently have trouble 'quieting the mind' at night, Olson suggests trying 'to train your mind to think about those things at more appropriate times of the day.' Schedule a time each day between work and dinner to simply write a sentence or two about what's worrying you and where you stand with that. 'Maybe it's as simple as, 'I thought about this today, but I don't have any real solutions right now.'' Olson says. By systematically documenting these worries during the day, ideally, you'll be less likely to focus on them at night. At that point, Walia suggests, 'Write down all your worries on a piece of paper so it's out of your head.' And try the breathing, muscle relaxation and visualization techniques above. G. Another common anxiety that is hidden in the wee hours (凌晨) of a sleepless night is the mounting awareness that you're not asleep when you should be. Stress and frustration increase as you worry about how you need to be up for work in four (or three or two) hours. The experts' suggestion? Get rid of time cues. 'No clock watching,' Walia says, 'That's a big no-no. Turn the clock around.' H. Medicate (用药治疗) with caution. Whether prescription or over-the-counter, Walia and Olson do not recommend drugs as a first choice for relieving sleeplessness. Ideally, the tips above and improved sleep hygiene should do the trick. But, should you choose a sleep aid, Olson reminds people that, of course, they make you sleepy. 'Avoid taking a sleep medicine the closer you get to morning,' he says. 'You don't want to be hung over because you took that Tylenol (泰勒诺，一种药物) at 5:30 a.m. just to sleep another hour.' Olson also advises that those who tuna to over-the-counter sleep aids don't do this continuously, so as to help avoid building a habit, and to check with their doctors that the medicine doesn't interfere with any of their conditions or medications. If you take a Food and Drug Administration-approved prescription sleep aid, Walia points out that it should be for the short term. I. See a doctor. If your sleeplessness is frequent and influencing your daytime behavior, bring it up with your physician. 'When people start to feel like they're worried about their sleep during the day, that's probably the time when they need some guidance,' Olson says.

单选题There are strict laws about exporting______ animals.

单选题Factors leading to the crisis included poor regulation, mismanagement and deception in the industry, and competition from other types of financial firms.

单选题Some linguists believe that the ______ age for children learning a foreign language is 5 to 8. A. optimistic B. optional C. optimal D. oppressed

单选题Producing elastin through chemical synthesis is a tedious process consuming ______ three months. A. the better half of B. for the better of C. all the better for D. the better part of

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单选题Woman: I am upset. You told my boss I had a part-time job? Man: I am sorry. I couldn’t help it. Question: What does the man mean? A．He couldn’t help the woman at all. B．He couldn’t hold back the secret. C．He couldn’t possibly tell the boss. D．He couldn’t decide who told the boss.

单选题Marlin visited his aunt two days before he ______ town.

单选题Lately I got a chance to read People magazine"s most recent compilation of "The 50 Most Beautiful People in the World." It was fabulous. In addition to offering helpful grooming tips, the issue involves an attempt to answer one of the most difficult questions of our time: Which is ultimately more influential, nature or nurture? Consider first the extreme nurturists, who abstain from the notion that anything is biologically fixed. There"s John Watson, famous for the statement: "Give me a child and let me control the total environment in which he is raised, and I will turn him into whatever I wish." A nurture viewpoint is also advanced by TV star Jenna Elfman, who attributes her beauty to drinking 100 ounces of water a day, and using a moisturizer that costs $1,000 a pound. However, even a beginner in the study of human developmental biology might easily note that no degree of expensive moisturizers would get, say, me on People"s beauty list. Naturally, similarly strong opinions come from the opposing, nature faction—the genetic determinists among the Most Beautiful. Perhaps the cockiest of this school is Josh Brolin, an actor whose statement could readily serve as a manifesto for those in his profession: "I was given my dad"s good genes." One searches the pages for a middle ground, for the interdisciplinary synthesizer who perceives the contributions of both nature and nurture. At last, we find Monica, a singer, who has an absolutely wondrous skill for applying makeup. This, at first, seems like just more nurture propaganda. But where does she get this cosmetic aptitude? Her mother supplies the answer: it"s something that"s inborn. One gasps at the insight: There is a genetic influence on how one interacts with the environment. Too bad a few more people can"t think this way when figuring out what genes have to do with intelligence, substance abuse, or violence. In matters of human beauty, hardwired preferences matter but can be overcome. Novelist George Eliot was strikingly homely, but her magnetic character inspired Henry James to write in a letter: "She is magnificently ugly—deliciously hideous. She has a dull grey eye, a vast pendulous nose, a huge mouth, and full of uneven teeth... Now in this vast ugliness resides a most powerful beauty which, in a very few minutes, steals forth and charms the mind, so that you end as I ended, in falling in love with her."