Since 1975 advocates of humane treatment of animals have broadened their goals to oppose the use of animals for fur, leather, wool, and food. They have mounted protests against all forms of hunting and the trapping of animals in the wild. And they have joined environmentalists in urging protection of natural habitats from commercial or residential development. The occasion for these added emphases was the publication in 1975 of "Animal Liberation: A New Ethics for Our Treatment of Animals" by Peter Singer, formerly a professor of philosophy at Oxford University in England. This book gave a new impetus to the animal rights movement. The post-1975 animal rights activists are far more vocal than their predecessors, and the organizations to which they belong are generally more radical. Many new organizations are formed. The tactics of the activists are designed to catch the attention of the public.
Since the mid-1980s there have been frequent news reports about anim
A. many people began to call for humane treatment of animals that year
B. a new book was published that broadened the animal rights movement
C. the environmentalists began to show interest in animal protection
D. the trapping of animals began to go wild all through the world
| Birds are literally half-asleep-with
one brain hemisphere alert and the other sleeping, according to a new study of
sleeping ducks. Earlier studies have documented half-brain sleep in a wide range of birds. The brain hemispheres take turns sinking into the sleep stage characterized by slow brain waves. The eye controlled by the sleeping hemisphere keeps shut, while the wakeful hemisphere’s eye stays open and alert. Birds also can sleep with both hemispheres resting at once. Decades of studies of bird flocks led researchers to predict extra alertness in the more vulnerable, end-of-the-row sleepers. Sure enough, the end birds tended to watch carefully on the side away from their companions. Ducks in the inner spots showed no preference for gaze direction. Also, birds dozing (打盹) at the end of the line resorted to single-h A. they have to watch out for possible attacks B. their brain hemispheres take turns to rest C. the two halves of their brain are differently structured D. they have to constantly keep an eye on their companions [单选题]变压器空载试验不能测取(____)。
A.变比 B.空载电流 C.短路阻抗 D.励磁阻抗 [判断题]警冲标用来指示机车车辆的停留位置，防止机车车辆的侧面冲撞。（ ）
A.正确 B.错误 [填空题]动车组一级修重点是检查防范走行部、___、受电弓的异常损坏，进行制动系统功能试验， 处理运用中发生的故障。
[单项选择]线路中断，铁路组织原列车绕道运输时，旅客原票（）但中途下车即行失效。
A. 补收差额票价 B. 退还差额票价 C. 不补不退 [多选题](1.0分)混凝土的和易性包括
A.分层度 B.粘聚性 C.保水性 D.流动性 E.强度 [单项选择]关于药物相互作用，错误的说法是( )。
A. 源于合并用药 B. 有广义和狭义之分 C. 狭义地讲专指药物在体内的药理作用出现增强或减弱的现象 D. 广义地讲指药物在体外所产生的物理学或化学变化 E. 分为药动学和药效学的相互作用 [单项选择]标准工艺应用与实施管理中，施工阶段施工项目部按（）进行“标准工艺”实施情况自检，报监理项目部验收。
A. 检验批 B. 分部工程 C. 分项工程 D. 单位工程 [单选题]国有资本、集体资本、非公有资本等交叉持股，互相融合的()是基本经济制度的重要实现形式。
A.混合所有制 B.融合所有制 C.综合所有制 D.联合所有制 我来回答: 提交
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