题目内容
In the past few decades, remarkable findings have been made in ethology, the study of animal social behavior. Earlier scientists had (21) that nonhuman social life was almost totally instinctive or fixed by genetics. Much more careful observation has shown that (22) variation occurs among the social ties of most species, showing that [earning is a part of social life. That is, the (23) are not solely fixed by the genes. (24) , the learning that occurs is often at an early age in a process that is called imprinting. Imprinting is clearly (25) instinctive, but it is not quite like the learning of humans, it is something in between the two. An illustration best (26) the nature of imprinting. Once, biologists thought that ducklings followed the mother duck because of instincts. Now we know that. shortly (27) they hatch, ducklings fix (28) any object about the size of a duck and will henceforth follow it. So ducklings may follow a basketball or a briefcase if these are (29) for the mother duck at the time when imprinting occurs. Thus, social ties can be considerably (30) , even ones that have a considerable base (31) by genetics. Even among the social insects something like imprinting (32) influence social behavior. For example, biologists once thought bees communicated with others purely (33) instinct. But, in examining a "dance" that bees do to indicate the distance and direction of a pollen source, observers found that bees raised in isolation could not communicate effectively. At a higher level, the genetic base seems to be much more for an all-purpose learning rather than the more specific responses of imprinting. Chimpanzees, for instance, generally (34) very good mother but Jane Goodall reports that some chimps carry the infant. upside down or (35) fail to nurture the young.
查看答案
搜索结果不匹配？点我反馈
更多问题
Publication of this survey had originally been intended to coincide with the annual meetings of the World Bank and the International Monetary Fund, scheduled for September 29th-30th in Washington, D.C. Those meetings, and the big anti-globalization pro- tests that had been planned to accompany them, were among the least significant casualties of the terrorist atrocities of September 11th. You might have thought that the anti-capitalist protesters, after contemplating those horrors and their aftermath, would be regretting more than just the loss of a venue for their marches. Many are, no doubt. But judging by the response of some of their leaders and many of the activists (if Internet chat rooms are any guide), grief is not always the prevailing mood. Some anti-globalists have found a kind of consolation even a cause of satisfaction, in these terrible events--that of having been as they see it, proved right. To its fiercest critics, globalization, the march of international capitalism, is a force for oppression, exploitation and injustice. The rage that drove the terrorists to commit their obscene crime was in part, it is argued, a response to that. At the very least, it is suggested, terrorism thrives on poverty and international capitalism, the protesters say, thrives on poverty too. These may be extreme positions, but the minority that holds them is not tiny, by any means. Far more important, the anti-globalists have lately drawn tacit support if nothing else, reluctance to condemn--from a broad range of public opinion. As a result, they have been, and are likely to remain, politically influential. At a time such as this, sorting through issues of political economy may seem very far removed from what matters. In one sense, it is. But when many in the West are contemplating their future, with new foreboding, it is important to understand why the skeptics are wrong; why economic integration is a force for good; and why globalization, far from being the greatest cause of poverty, is its only feasible cure. Undeniably, popular support for that view is lacking. In the developed economies, support for further trade liberalization is uncertain; in some countries, voters are down- right hostile to it. Starting a new round of global trade talks this year will be struggle, and seeing it through to a useful conclusion will be. The institutions that in most people’s eyes represent the global economy--the IMF, the World Bank and the World Trade Organization are reviled far more widely than they are admired; the best they can expect from opinion at large is grudging acceptance. Governments, meanwhile, are accused of bowing down to business, globalization leaves them no choice. Private capital moves across the planet unchecked. Wherever it goes, it bleeds democracy of content and puts "profits before people". From the passage, you may infer that the survey was planned to be published on September 29th～30th ______.
变量生存时间是指变量从模块对象 【9】 的代码执行时间。
患者，男，50岁。1年来头晕、乏力，半月来加重伴心悸、纳差、恶心，血压增高为165/105mmHg，化验尿蛋白(++)，沉渣RBC4～8个/HP，血Hb80g/L，血肌酐610μ×mol/L，BUN25mmol/L。 该患者最不可能出现的电解质紊乱是
如果就业率比较高，社会人才供不应求，预期未来家庭收入可通过努力劳动获得明显增加，那么个人理财应更多配置储蓄产品类资产。 ( )
微信支付 
支付宝支付