托福TPO真题阅读-答案解析[001].docx

文档介绍：托福TPO真题阅读:答案解析
Key:
13-
题目解析：
1. In paragraph 1, what drecious意为“宝贵的，有价值的”，后文种种由该化石得出的科研结论也说明P化石极有科学价值，与valuable同意。因此选择C。
正确答案：
C


4. Pakicetus and modern cetaceans have similar（Factual Information Question）
structures
for diving
shapes
locations
相关原句：
The fossil consists of a complete skull of an archaeocyte, an extinct group of ancestors of modern cetaceans. (Paragraph 3)
此题解析：
依据原句得出P化石与现代鲸类的祖先(archaeocyte)拥有同样的完整头骨(a complete skull)，可推出P与现代鲸类头骨应当类似。因此选择C。
此题亦可用排解法：
A. “The skull is cetacean-like but
its jawbones lack the enlarged space
that is filled with fat or oil and used for receiving underwater sound in modern whales. Pakicetus probably detected sound through the ear opening as in land mammals.”该句指出P化石的颚骨（jawbones）缺少鲸类动物拥有的由脂肪和油脂填充的扩大性空间（enlarged space


that is…），听力构造不同，并猜想它应当通过耳孔(the ear opening)承受声音，排解A。
B. “The skull also lacks a blowhole, another cetacean adaptation for diving.”该句明确指出P头骨缺少出气孔（blowhole），同鲸类潜水构造不同，排解B。
probably bred and gave birth on ，文章猜想（probably）在陆地（give birth on land），排解D。
正确答案：
C
5. The word it in the passage refers to（Reference Question）




相关原句：
It has been suggested that Pakicetus fed on fish in shallow water and was not yet adapted for life in the open ocean. It probably bred and gave birth on land. (Paragraph 3)
此题解析：
科学家猜想Pakicetus可能靠浅水区鱼类为食并尚未适应海洋生活，由此得出“很可能在陆地生殖”的主体“it”正是指Pakicetus。因此选A。


正确答案：
A
6. The word exposed in the passage is closest in meaning to （Vocabulary Question）




相关原句：
Basilosaurus, were found in sediments left by the Tethys Sea and now exposed in the Sahara desert.( Parag