单选题Lighting levels are carefully controlled to fall within an acceptable level for optimal reading convenience.

单选题People"s attitude towards their work determines everything. To workers, leisure means simply the hours they need to relax and rest in order to work efficiently. Workers are therefore more 21 to dedicate more time to working, taking too little 22 rather than too much. To laborers, on the other hand, leisure means autonomy from compulsion, 23 it is natural for them to imagine that the fewer hours they have to spend laboring, and the more hours they have free to play, the 24 . Besides mere hours spent in leisure, workers and laborers 25 in the amount of personal satisfaction they derive from their jobs. Workers who enjoy their jobs will be happier, less stressed, and generally more 26 with their lives. They will also work with more diligence and precision 27 they have fostered a sense of personal pride in their jobs. On the other hand, laborers, whose sole incentive is 28 their livelihood, feel that the time they spend on the daily routine is wasted and doesn"t contribute to their happiness. 29 valuing all 24 hours of their day as enjoyable and productive hours, they gauge only the time spent in leisure and play as meaningful. Unfortunately, laborers are all too 30 and only a small percentage of the population is in the lucky position of being workers.

单选题Annie's job as an assistant at the university observatory was to {{U}}classify{{/U}} stars according to their spectra.

单选题Woman: Jimmy said that he was going to marry a rich French businesswoman. Man: Don't be so sure. He once told me that he had bought a big house. Yet he's still sharing an apartment with Mark. Question: What does the man imply?

单选题The design of this architecture shows a great deal of originality . We have never seen a building like that before.

单选题General acceptance of 3-D. films may prove hard to come by, as the experience of three decades ago indicated.

单选题It is reported that a completely new situation will ______ when the examination system comes into existence.

单选题The pursuit of maximum profit often drives manufacturers to Uturn out/U things that can do harm to people’s health.

单选题The growth of part-time and flexible working pattern allows more women to Utake advantage/U of jobopportunities.

单选题The sitting-room feels comfortable with the fireplace {{U}}shedding {{/U}}warm and faint light.

单选题A: We each have our own desk and dresser, but we'll have to share the bookcase and the closet. B: ______.

单选题According to the U. S. National Highway Traffic Safety Administration (NHTSA) , car crashes are the leading cause of death among children between 5 and 14 years of age. Says NHTSA: " (61) 50% of children who die in crashes are unrestrained. In addition, 4 out of 5 children are (62) restrained. " The NHTSA offers a number of safety (63) and cautions for those who are accompanied by children while driving. (64) laws vary from country to country and even from state to state, these guidelines may serve as food for (65) to many parents and guardians of children. The safest place for all children is in the back seat. Infants should be placed in a rear-facing child safety seat in the baekseat of the car. A child (66) a year old and weighing at least 20 pounds may be placed in a forward-facing seat. At 40 pounds, the child can use a "booster seat(儿童案例椅) ", (67) is secured by one of the car's lap and shoulder belts. At approximately 80 pounds and a (68) of about four feet nine inches, the child may begin using an adult safety strap. Children should not sit in the front passenger seat (69) they are at least 13 years of age. Front- passenger air bags can cause serious (70) to younger children and babies. When a booster seat is used, a lap belt alone will not provide (71) protection if the booster seat does not have a (72) . Do not think that a shoulder belt alone will protect a small child; in the (73) of a crash, the belt may (74) the neck of the child, causing serious injury or even death. Follow instructions closely when (75) and using child seats. According to NHTSA, "even the 'safest' seat may not protect your child if it isn't used correctly. /

单选题The {{U}}ultimate{{/U}} cause of the American Civil War was bombardment of Fort Sumter.

单选题A well-written biography can ______ the barriers of time and bring the hero back to life.

单选题My suggestion met with a(n) ______ refusal; I had to hold my tongue.

单选题She was slim and he liked her that way. So he called a lawyer. The result was a contract. According to the document, the fresh-faced bride agreed to pay a fine for each pound she gained in weight, the money refundable upon its loss. The paper signed, and the wedding went on. This is a prenuptial (婚前的)agreement—one more indication of the strange pass of marriage in this most transactional decade. You are welcome to marriage, contractual style, where increasingly detailed legal documents spell out everything from who's going to do the dishes to who's going to get the house when you split. This is family planning taken to extreme. Once employed solely by the rich, second-timers and the old industrialist carrying off the latest young cookie, the prenuptial agreement—a written pact between a couple outlining the financial obligations in the event of divorce—is becoming commonplace in a litigious (爱打官司的),disillusioned and materialistic age in which one in every two marriages is projected to end in divorce. The only question is: What about love? When asked whether anyone believes in Cupid (爱神)anymore, Dr. Michael Vincent Miller says, "Given a century that is full of sexual liberation, computer-dating services and so on, one feels tempted to reply,' only in a mood of desperate nostalgia (怀旧 )'. ""Pre-nups" (prenuptial agreements)do assume negativity. Founded on disillusionment, they cannot be separated from the high divorce rate in the United States. The result, argues Miller, is a kind of defending mentality. "We've gotten good at managing finiteness, failure and trouble with a sort of 'What' s yours is yours and what's mine is mine's realism'. We've seen it isn't all about love. We've seen there's power politics in there—a fight for control, and when you've got those things, you're halfway to lawyers and money." In other ways, however, the compacts embody positive, even idealistic thinking about marriage, love and relations, a law scholar Isabel Marcus believes. Marcus says , "Contracts could spell the end of romantic love as salvation. They say love exists, but that it's best accompanied by good, hard thinking about equitability (平等). By writing a contract, the couple gains control of its marriage. "What's good is it contributes to honesty; what's unfortunate is the idea that any contract can govern your emotions," says the author of the book "The Nature of Love./

单选题This work is expected to fulfill a need that lawyers have felt for many years.

单选题The other members of the Cabinet made fun of the Secretary of Interior when he purchased Alaska because ,at the time ,it was not considered valuable,