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巴甫洛夫发现的高级神经活动的几个基本规律是什么

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何为自变量和因变量心理学实验中通常是如何控制无关变量的

材料：八年前，刘宁以近650分的高分，成为凉山某县的理科状元，考入中国科技大学，大学毕业4年间，找了几个工作都觉得不理想，就放弃了，刘宁称“如果找不到喜欢的工作，我宁愿不工作。”他开始沉迷网络，并觉得像多数人一样工作结婚很无聊，宁愿选择当“流浪汉”。一个高考状元，毕业找不到工作，就这么自暴自弃，引起了社会强烈关注，30后说身体才是革命的本钱。70后说年轻的一代要有理想和追求，80后说曾经觉得理想很重要，现在觉得还是得在理想和现实中取个平衡。请问这件事对自己的启示

材料：八年前，刘宁以近650分的高分，成为凉山某县的理科状元，考入中国科技大学，大学毕业4年间，找了几个工作都觉得不理想，就放弃了，刘宁称“如果找不到喜欢的工作，我宁愿不工作。”他开始沉迷网络，并觉得像多数人一样工作结婚很无聊，宁愿选择当“流浪汉”。一个高考状元，毕业找不到工作，就这么自暴自弃，引起了社会强烈关注，30后说身体才是革命的本钱。70后说年轻的一代要有理想和追求，80后说曾经觉得理想很重要，现在觉得还是得在理想和现实中取个平衡。如果是你，上班同事都以异样眼光看你，你怎么办

案例分析题Man-made climate change is "unequivocal (毋庸置疑的)" and demands urgent action. Yesterday’s report from the Intergovernmental Panel on Climate Change underlined the former point, (67) discussions at the World Economic Forum in Davos last week demonstrated the growing consensus on the (68) . The challenge now is action.The IPCC’s warning is serious: temperatures are likely to (69) by about 3℃ by 2100, with a (70) of 2℃ to 4.5℃. The latter would be close to the difference (71) the hast ice age and today.Adaptation is going to be part of the response, not least (72) a substantial rise in temperatures is already on the way: the stock of greenhouse gases in the (73) now is already 50 percent (74) pre-industrial levels. But it is also essential to (75) growth in the stock, ideally to (76) it below 550 parts per million, which would (77) be double the pre-industrial levels.On present trends, the atmosphere is (78) to reach such a concentration in just three decades. To (79) levels rising further, emissions will need to be reduced (80) at least 50 per cent below what Sir Nicholas Stern called "business as usual" -- (81) is, the continuation of historic trends--by then.The good news, (82) the Stern review of climate change, is that the economic (83) of achieving these objectives (84) be as little a 1 per cent of global gross product. However, the (85) news is that big changes to long-lived investment decisions will be required soon, (86) in the power sector. 82（）

A. suggests
B. doubts
C. predicts
D. promises