a中说解释他们的年代关系，而文中只是大概说了一下时间的先后，没有精确到多少多少年吧。而且other aspects of human evolution指什么？前面的双足行走算是一个human evolution，其他的又是什么
而且文章一开始提出老观点说由于大脑和工具导致直立行走，中间和后面都是用anatomical的证据来说明大脑和工具的年代比预期的要晚。而且第一段的最后一句话表明了文章要说明的问题.But discoveries of the three-million-year-old fossilized remains of our hominid ancestor Australopithecus have yielded substantial anatomical evidence that upright walking appeared prior to the dramatic enlargement of the brain and the development of stone tools. 典型的新老观点
22题应该是C，原文里面讲的明明白白的， Reconstruction of the pelvis (hipbones)....has shown that they are much more like the corresponding bones of the modern human than like those of the most closely related living primate, the quadrupedal chimpanzee。
讲的是骨骼结构的惊人相似，不是直立行走的方法method of locomotion，希望朋友们读文章的时候还是要注意些细节部分，不要主观臆测这道题的答案。
20.C. (Note: question asked about what happened most recently, i.e. what happened the last)
21.B. (From the statements of the passage, we know that hominid australopithecines have more suitable bone structure to walk, thus human are less adpated to work upright)
22.C (As what i mentioned in above post, the passage has clear statement about this)
23.D (The last sentence of first paragrah states the main idea)
sorry that after my revision of the question 22, i changed my mind. D should be the correct answer. As in the passage that immediately followed the red highlighted portion, we can read that the shape of Lucy's pelvis is different from human's. therefore the answer cannot be C.
Instead, in D, the mentioned "method" actually refers to second sentence of the second paragraph, where we can find that the "method" is actually the modification of "shape and configuration of various bones". i.e. Both human and hominid austraiopithecine perform locomotion by the same modification of body structure.
Reconstruction of the pelvis (hipbones) and femur (thighbone) of “Lucy”, a three-million-year-old skeleton that is the most complete fossilized skeleton from the australopithecine era, has shown that they are much more like the corresponding bones of the modern human than like those of the most closely related living primate, the quadrupedal chimpanzee.
22: According to the passage, the hominid australopithecine most closely resembled a modern human with respect to which of the following characteristics?
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发表于 2006-12-27 06:27:00
