单选题It is unlikely he can significantly contribute to the highly competitive strategies that food ______ demands.

单选题______you ______further problems with your printer, contact your dealer for advice.

单选题Dr. Segura has a ______ sign on his office door: "I'd like to help you out. Which way did you come in?"

单选题We had a good time there, and the food was plentiful and ______.

单选题With advances in xerography and desktop publishing, the fanzines became slicker and more visually appealing .

单选题I live in the land of Disney, Hollywood and year-round sun. You may think people in such a glamorous, fun-filled place are happier than others. If so, you have some mistaken ideas about the nature of happiness. Many intelligent people still equate happiness with fun. The truth is that fun and happiness have little or nothing in common. Fun is what we experience during an act. Happiness is what we experience after an act. It is a deeper more abiding emotion. Going to an amusement park or ball game, watching a movie or television, are fun activities that help us relax, temporarily forget our problems and maybe even laugh. But they do not bring happiness, because their positive effects end when the fun ends. I have often thought that if Hollywood stars have a role to play, it is to teach us that happiness has nothing to do with fan. These rich, beautiful individuals have constant access to glamorous parties , fancy cars, expensive homes, everything that spells " happiness". But in memoir after memoir, celebrities reveal the unhappiness hidden beneath all their fun: depression, alcoholism, drug addiction, broken marriages, troubled children and profound loneliness. Ask a bachelor why he resists marriage even though he finds dating to be less and less satisfying. If he"s honest, he will tell you that he is afraid of making a commitment. For commitment is in tact quite painful. The single life is filled with fun, adventure and excitement. Marriage has such moments, but they are not its most distinguishing features. Similarly, couples that choose not to have children are deciding in favor of painless fun over painful happiness. They can dine out ever they want and sleep as late as they want. Couples with infant children are lucky to get a whole night"s sleep or a three-day vacation. I don"t know any parent who would choose the word fun to describe raising children. Understanding and accepting that true happiness has nothing to do with fun is one of the most liberating realizations we can ever come to. It liberates time; now we can devote more hours to activities that can genuinely increase our happiness. It liberates money: buying that new car or those fancy clothes that will do nothing to increase our happiness now seems pointless. And it liberates us from envy: we now understand that all those rich and glamorous people we were so sure are happy because they are always having so much fun actually may not be happy at all.

单选题I won't give you an account of all my wanderings, though I had been most indefatigable; for I am keeping, as I told you before, a most ______journal.

单选题As a way of ______ domestic harmony and creating a manageable routine, some couple choose one of the three different styles of household role division : traditional, egalitarian or cooperative.

单选题The firemen acted quickly because lives were at stake .

单选题More than one third of the Chinese immigrants in the United States live in California, ______, in San Francisco.

单选题Scarcely ______ when she started complaining to me of the terrible living conditions on the campus.

单选题All human communication experts agree that we use both verbal and nonverbal methods to ______ message to each other.

单选题1837 marks the______of the slave trade in the British Empire.

单选题Of all things banish the ______ out of your conversation, and never think of entertaining people with your own personal concerns of private affairs.

单选题The health administrative department of a city with districts shall designate at least one______medical institution to take and treat AIDS victims and AIDS virus carriers.

单选题The outbreak of the Ebola virus in Africa could be ______the poor medical apparatus, ineffective quarantine policy and unrest social conditions.

单选题Ironically, the proper use of figurative language must be based on the denotative meaning of the words, because it is the failure to recognize this ______ meaning that leads to mixed metaphors and their attendant incongruity.

单选题Although her initial success was ______ by the fact that she was the daughter of a famous actor, the critics later acclaimed her as a star in her own right.

单选题But if robots are to reach the next stage of labor-saving utility, they will have to operate with less human ______ and be able to make at least a few decisions for themselves—goals that pose a real challenge.

单选题Because it takes an interest in anything that ______ on the health of travelers, this emerging medical speculums invariably cuts across the traditional disciplines. A. impinges B. jolts C. shocks D. concusses