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External
Rewards{{/B}} Psychologists take opposing views of how external rewards, from warm praise to cold cash, affect motivation and creativity. Behaviorists, who study the relation between actions and their consequences, argue that rewards can improve performance at work and school. Cognitive (认识学派的) researchers, who study various aspects of mental life, maintain that rewards often destroy creativity by encouraging dependence on approval and gifts from others. The latter view has gained many supporters, especially among educators. But the careful use of small monetary (金钱的) rewards sparks creativity in grade-school children, suggesting that properly presented inducements (刺激) indeed aid inventiveness, according to a study in the June Journal of Personality and Social Psychology. A. They have no doubts about them. B. They have doubts about them. C. They approve of them. D. They avoid talking about them. [单选题]对倾覆车体利用重型设备进行扶正.支撑.固定时，要加强现场警戒，确保救援行动安全；列车处于下坡状态时，应通知( )部门采取车辆制动措施，防止车辆溜坡。
A.交通 B.高警 C.铁路 D.消防 [判断题]迷走神经节后纤维末梢释放的递质是乙酰胆碱。
A.正确 B.错误 [判断题]自锁式常规取芯工具开始造芯时,除疏松油砂外,一般情况下要加足钻压启动,送钻均匀。
A.正确 B.错误 [单项选择]The Declaration of Independence came from the theory of British philosopher ______.
A. Paul Revere B. John Locke C. Cornwallis D. Frederick Douglass [单项选择] HOW THE CREDIT CARD CAPTURED AMERICA
The proliferation of platinum American Express cards in the 1980s spawned rumors of an ultimate, highly exclusive, never publicized "Black Card". Carried by billionaires, it reportedly allowed holders to demand private shopping sprees at the world’s most exclusive shops and to summon helicopters in the middle of Sahara. American express vehemently denies the existence of such a charge card. But the persistence of the myth suggests the social importance credit cards have for so many Americans. As one business writer puts it, "to have one’s credit cards canceled is now akin to being excommunicated by the medieval church." America’s love affair with the credit card began in 1949, when businessman Frank X. McNamara finished a meal in a New York restaurant and then discovered he had no cash. In those days, gasoline and store charge cards were common, but cash was standard for almost everything e A. Because the continuing competition forced them. B. Because credit cards replaced and created cash. C. Because credit cards can be used as ATM. D. Because consumers didn’t mind paying high rates of their credit cards. [单项选择]患者男8岁，1小时前外伤求诊。检查见右上1近中切角缺损未露髓，探面敏感上前牙牙根发育完成的年龄是（）
A. 6～8岁 B. 7～9岁 C. 9～12岁 D. 12～14岁 E. 18岁 [单选题]在管理的引导方式，旋转但不拔出选择旋钮，速度/马赫(SPD/MACH)窗数字保持多少秒后，虚线重新出现？
A. 10秒 B. 45秒 C. 60秒 [单项选择]The world seems increasingly divided into those who favor genetically modified (GM) foods and those who fear them. Advocates assert that growing genetically altered crops can be kinder to the environment and that eating foods from those plants is perfectly safe. And, they say, genetic engineering—which can induce plants to grow in poor soils or to produce more nutritious foods—will soon become an essential tool for helping to feed the world’s burgeoning population. Skeptics contend that GM crops could pose unique risks to the environment and to health—risks too troubling to accept placidly. Taking that view, many European countries are restricting the planting and importation of GM agricultural products. Much of the debate hinges on perceptions of safety. But what exactly does recent scientific research say about the hazards
Advocates of GM, or transgenic, crops say the plants will benefit the environment by requiring fewer toxic pesticides than conventional crops. But critics fea A. GM crops can produce more nutritious foods. B. GM crops can be greatly helpful in feeding the growing population of the world. C. GM crops will benefit the environment by requiring fewer pesticides. D. GM crops can simplify operation in growing crops. 我来回答: 提交
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