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[Reading Comprehension]
试题详情
文章：
| Line | Micro-wear patterns found on the teeth of long- |
| extinct specimens of the primate species | |
| australopithecine may provide evidence about their | |
| diets. For example, on the basis of tooth micro-wear | |
| (5) | patterns, Walker dismisses Jolly’s hypothesis that |
| australopithecines ate hard seeds. He also disputes | |
| Szalay’s suggestion that the heavy enamel of | |
| australopithecine teeth is an adaptation to bone | |
| crunching, since both seed cracking and bone | |
| (10) | crunching produce distinctive micro-wear |
| characteristics on teeth. His conclusion that | |
| australopithecines were frugivores (fruit eaters) is | |
| based upon his observation that the tooth micro- | |
| wear characteristics of east African | |
| (15) | australopithecine specimens are indistinguishable |
| from those of chimpanzees and orangutans, which | |
| are commonly assumed to be frugivorous primates. | |
| However, research on the diets of | |
| contemporary primates suggests that micro-wear | |
| (20) | studies may have limited utility in determining the |
| foods that are actually eaten. For example, insect | |
| eating, which can cause distinct micro-wear | |
| patterns, would not cause much tooth abrasion in | |
| modern baboons, who eat only soft-bodied insects | |
| (25) | rather than hard-bodied insects. In addition, the |
| diets of current omnivorous primates vary | |
| considerably depending on the environments that | |
| different groups within a primate species inhabit; if | |
| australopithecines were omnivores too, we might | |
| (30) | expect to find considerable population variation in |
| their tooth micro-wear patterns. Thus, Walker’s | |
| description of possible australopithecine diets may | |
| need to be expanded to include a much more | |
| diverse diet. |
题目：
It can be inferred from the passage that Walker’s conclusion about the australopithecine diet would be called into question under which of the following circumstances?
选项:
A、
The tooth enamel of australopithecines is found to be much heavier than that of modern frugivorous primates.
B、
The micro-wear patterns of australopithecine teeth from regions other than east Africa are analyzed.
C、
Orangutans are found to have a much broader diet than is currently recognized.
D、
The environment of east Africa at the time australopithecines lived there is found to have been far more varied than is currently thought.
E、
The area in which the australopithecine specimens were found is discovered to have been very rich in soft-bodied insects during the period when australopithecines lived there.
答案:
C
提问：
张老师，我错选了D。我现在觉得选C非常稳妥的原因是因为提到了diet，而a的diet就是全篇讨论对象；但是我觉得D选项如果从第二段定位的话也有一定道理。毕竟阅读文章里面给出了一些线索。您能帮我排除一下这个选项吗？
解答：
点赞1
阅读133
提问：
张老师，我错选了D。我现在觉得选C非常稳妥的原因是因为提到了diet，而a的diet就是全篇讨论对象；但是我觉得D选项如果从第二段定位的话也有一定道理。毕竟阅读文章里面给出了一些线索。您能帮我排除一下这个选项吗？
解答：
点赞1
阅读134
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