GWD－31－20、21、22、23

sureho

请教一下的23题，为什么不选C？我觉得文章主要不是解释年代关系，而是想说明真正令原始人两脚行走的原因

sureho

有没有人能够谈论一下？

wwwhahchn

完全同意wangyuGG的答案

tania

想了好久，还是觉得23题应该选D，那个nn再给讲讲啊

leohymo

No 22 should be C

lindazhou

my answer is ABDC

lindazhou

22, One theory is that bipedality evolved in conjunction with the nuclear family:

a-ga

21: the passage suggests that, in comparison with the hominid australopithecines, modern humans are

A: less well adapted to large group cooperation

B: less well adapted to walking upright

C: more agile in running and climbing

D: more well suited to a nuclear family structure

E: more well suited to cooperative caring for their offspring 請問這題怎麼推出來的??謝謝!!

ayang1017

23题先开始选c但是后来仔细看了下发现c的表达有问题

c。argue that the transition to a nuclear family structure was a more crucial step in human evolution than was the development of stone tools

其实文章在argue的是小家庭中的传递对于直立行走的影响，那么直接改到人类进化，这个表述好像有些问题啊～

d。不太可行的原因，evidence过于细节

所以想了想还是只能a了啊

yuyingchao

我想第23题还是C比较是文章的重心: 作者提出新的观点transition to a nuclear family对人类演化的影响, walk upright是演化的一环
C: argue that the transition to a nuclear family structure was a more crucial step in human evolution than was the development of stone tools

If the small-brained australopithecines were not toolmakers, what evolutionary advantage did they gain by walking upright? (Line 50) One theory is that bipedality evolved in conjunction with the nuclear family: monogamous parents cooperating to care for their offspring. Walking upright permitted the father to use his hands to gather food and carry it to his mate from a distance, allowing the mother to devote more time and energy to nurturing and protecting their children. According to this view, the transition to bipedal walking may have occurred as long as ten million years ago, at the time of the earliest hominids, making it a crucial initiating event in human evolution.