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【单选题】
To paraphrase 18th-century statesman Edmund Burke, 'all that is needed for the triumph of a misguided cause is that good people do nothing.' One such cause now seeks to end biomedical research because of the theory that animals have rights ruling out their use in research. Scientists need to respond forcefully to animal rights advocates, whose arguments are confusing the public and thereby threatening advances in health knowledge and care. Leaders of the animal rights, movement target biomedical research because it depends on public funding, and few people understand the process of health care research. Hearing allegations of cruelty to animals in research settings, many are perplexed that anyone would deliberately harm an animal. For example, a grandmotherly woman staffing an animal rights booth at a recent street fair was distributing a brochure that encouraged readers not to use anything that comes from or is tested in animals — no meat, no fur, no medicines. Asked if she opposed immunizations, she wanted to know if vaccines come from animal research. When assured that they do, she replied, 'Then I would have to say yes.' Asked what will happen when epidemics return, she said, 'Don't worry, scientists will find some way of using computers.' Such well-meaning people just don't understand. Scientists must communicate their message to the public in a compassionate, understandable way — in human terms, not in the language of molecular biology. We need to make clear the connection between animal research and a grandmother's hip replacement, a father's bypass operation, a baby's vaccinations, and even a pet's shots. To those who are unaware that animal research was needed to produce these treatments, as well as mew treatments and vaccines, animal research seems wasteful at best and cruel at worst. Much can be done. Scientists could 'adopt' middle school classes and present their own research. They should be quick to respond to letters to the editor, lest animal rights misinformation go unchallenged and ac- quire a deceptive appearance of truth. Research institutions could be opened to tours, to show that laboratory animals receive humane care. Finally, because the ultimate stakeholders are patients, the health research com- munity should actively recruit to its cause not only well-known personalities such as Stephen Cooper, who has made courageous statements about the value of animal research, but all who receive medical treatment. If good people do nothing, there is a real possibility that an uninformed citizenry Will extinguish the precious embers of medical progress. The author begins his article with Edmund Burke's words to ______.
A.
call on scientists to take some actions
B.
criticize the misguided cause of animal rights
C.
warn of the doom of biomedical research
D.
show the triumph of the animal rights movement
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A.
蛋白质的摄入量每日每千克体重0.6~0.8g,其中60%以上为高生物效价蛋白质
B.
保证供给每日充足热量摄入
C.
盐的摄入量为每天1~3g,同时补充多种维生素
D.
避免患者发生感染
E.
高脂肪高蛋白饮食
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A.
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B.
编程原点
C.
机床原点
D.
换刀点
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A.
正确
B.
错误
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A.
正确
B.
错误
【单选题】数控机床的编程基准是( )。
A.
工件原点
B.
机床参考点
C.
机床零点
D.
机床参考点及工件原点
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A.
会员国 缴纳股金
B.
向国际金融市场借款
C.
转让银行债券
D.
业务净收益
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【单选题】数控机床的编程基准是( )。
A.
机床原点
B.
机床参考点
C.
编程原点
D.
机床参考点及工件原点
【判断题】按需心脏起搏仅在心脏发生暂时性传导阻滞时发放电信号刺激心脏。
A.
正确
B.
错误
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