细节题:the vertical pressure gradients within the blood vessels are counteracted by similar pressure gradients in the ...
A选项:本文提到怎样适应环境,没提缺点;
本文大意:T蛇,海蛇,A蛇。开头说T蛇适应了一些重力对于血液的影响,而它所面临的问题在海蛇身上可以体现。海蛇在水中,由于水讲中立中和,海蛇全身的血液量是一样的,然后当海蛇从水中出来后,身体中间一下的血液迅速流向尾部,而其脑袋又在身体中间部位,以至于脑部没有血液;而这点上来说,T蛇表现得更好一些,因为{它已经适应在不同方向上调节血压}{它的脑部和心脏距离很近也是它的一个适应性的表现“}{对于在树上生活的A蛇来说}心脏和脑袋的距离只有身体的15%,心脏的血液很容易供给脑部,而血液流到尾部再流回来的时间变长。它很好的适应血液循环的问题,通过间歇性的停下身体,摇晃尾巴,收缩肌肉,{促使血液流回心脏和大脑}。
A平行么……
注意后面的later however
这道题错选B了, 错误的原因是没有理清题目问的对象:present-day columnar cacti in the Sonoran Desert differ from their close relatives in southern Mexico in that the Sonoran cacti,其中in that the Sonaran cacti指的是southern Mexico的,而不是最后一段讲的现今的。。;
Pollinators can be unreliable for several reasons. They can be dietary generalists whose fidelity to a particular species depends on the availability of alternative food sources. Or, they can be dietary specialists, but their abundance may vary widely from year to year, resulting in variable pollination of their preferred food species.Finally, they may be dietary specialists, but their abundance may be chronically low relative to the availability of flowers.
A选项:文章并没提到the adaptive responses
文章大意:本文先描写了在the Sonoran Desert of northwestern Mexico and southern Arizona有几种花columnar cacti-cardon, saguaro, and organ pipe 都是夜间蝙蝠授粉,然后说它们白天的时候关闭柱头不接受白天授粉着的授粉。
A选项是 maintaining 不是 monitoring !
本题考查果因推理,选项取反后找削弱更容易。
错选了C:要依据证据做题,不能发挥啊!!其实是对这句话的不理解“Hoping to participate in the traditional American ethos of individual success” 想要获取个人成功=personal attainment
选项C的“surviving”对理解句意起到关键作用。
错选C选项:学者提到的是G创造了一种意识,并没有提到“非洲美国人的这种普遍的敏感“,也没提这种敏感为G的政治诉求打基础;
选项D黑体二并非对黑体一的直接解释,而是阐述了为何这种考虑可能过于乐观了。
BCD对比对象都错误
还是定位到第二段 ”The constructivists gain acceptance by misrepresenting technological determinism:“
A选项:学者认为G创造了引起复兴的意识,而这种political activism是来自G,而不是士兵;
要仔细思考每个选项表达的意思judicial support不等于verdicts favoring patentees ,后者是表示结果,同时也不符合原文之前的意思