If a clone loses many stems simultaneously, the resulting hormonal imbalance triggers a huge increase in new, rapidly growing shoots that can outnumber the ones destroyed. An aspen grove needs to experience fire or some other disturbance regularly, or it will fail to regenerate and spread. Instead, coniferous trees will invade the aspen grove's borders and increasingly block out sunlight needed by the aspens.
政府为了促进就业，给就业的人提供补助，但是这些人的收入小于政府提供的失业补助----》所以失业的人没有经济激励去接受这些提供补助的工作。注意题目问的是削弱！！
错选A 政府对于失业补助金不征税，注意是对失业的人，这样人们确实没有经济激励去找工作，加强结论。
B 其他国家，这些国家制定了最低工资水平，比L有更高的失业率。其他国家、最低工资水平都与原文无关。
C 有工作并且还在找新工作的人找到的工作 比那些失业的在找工作的人找到的工作 薪水更高。先接受一个工作，之后便可以去找新工作，这样工资就更高，所以失业者是有经济激励的，削弱了原结论，correct。
D 失业者每年获得的政府补助低于贫困线。那又如何，接受有补助的工作获得的工资比失业补助更低，更没有经济激励了。
E 人们有时接受一项工作是因为他们喜欢。与经济激励无关。
Krech also contradicts Martin's exclusion of climatic change as an explanation by asserting that widespread climatic change did indeed occur at the end of the Pleistocene.
take its orders from 听命于 the Anglo-Iranian Oil Company did not take its orders from the British government, despite the 51 percent government shareholding. 说明公司并不受政府控制，A错。
despite定位后一句the relationship between British business and the British government was sufficiently close that many Iranians understandably viewed the oil company and the bank as symbols of a British imperialist policy.由股权51%引出了I的看法
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If a clone loses many stems simultaneously, the resulting hormonal imbalance triggers a huge increase in new, rapidly growing shoots that can outnumber the ones destroyed. An aspen grove needs to experience fire or some other disturbance regularly, or it will fail to regenerate and spread. Instead, coniferous trees will invade the aspen grove's borders and increasingly block out sunlight needed by the aspens.