历年托福考试语法真题全面解析19
11. The scholarly interest in perception stems largely from questions about the sources and validity of what __________.(A) it is known as human knowledge
(B) is known as human knowledge
(C) known human knowledge
(D) is human knowledge known
答案：B
测试点：what引导的名词从句。
分析：介词of应后接名词性成份作介词宾语。What…结构的作用相当于一个名词，它要么是what+不定式，要么是what从句，即名词性从句。答案中无不定式形式，只有(B)能与what组成完整的从句，故选 (B)。(A)it与what重复。
12. Because of the Aleuts’ constant exposure to cold weather, they have long recognized __________ .
(A) and body needs to be fat
(B) body needs the fat
(C) how fat the body needs
(D) the body’s need for fat
答案：D
测试点：宾语。
分析：recognize是及物动词，其后应接名词性的成份作宾语。(D)是名词词组，故选(D)。(B)看似省掉that的宾语从句，但fat前的定冠词the是错误的。(C)如改为how much fat则在句子结构上亦是正确的。
13. Almost all economists agree __________ by trading with one another.
(A) nations that are gained
(B) nations they gain
(C) gaining nations
(D) that nations gain
答案：D
测试点：宾语从句。
分析：请注意动词agree的几种句型结构：(1)agree十宾语从句； (2)agree with／to十名词结构。
14. The development of mechanical timepieces spurred the search for __________ with which to regulate them.
(A) more accurate than sundials
(B) more accurate sundials
(C) sundials more accurately
(D) more accurately than sundials
答案：B
测试点：介词宾语。
分析：介词for后面应接名词性的成份作其宾语。4个答案中只有(B)是以名词sundials作中心词的词组，可作介词宾语。
15. Anthropology is a science __________anthropologists use a rigorous set of methods and techniques to document observations that can be checked by others.
(A) in that
(B) that in
(C) that
(D) in
答案：A
测试点：习语。
分析：空格后面的部分说明Anthropology is a science的原因，而并非修饰它。答案中只有(A)in that表示“因为”，故选(A)。(C)that是错误的。从句子结构上分析这个that无法引导出定语从句，因句中既有主语(anthropologists)又有宾语(asetof…)； 从句意上分析，that后面的部分并不是前面Science的同位语从句。
解题要点：当4个答案中有in that这个短语时，首先要考虑选择它。
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