历年托福考试语法真题全面解析59
11.A majority of people in the United States can get all the calcium their bodies --- from the food they eat.(A) require
(B) requires
(C) requiring
(D) to require
答案：A
测试点：谓语／主谓数的一致.
分析：calcium后面是省略了关系代词that的定语从句，从句缺谓语动词。答案中(A)(B)均可能作谓语，但从句主语为复数的bodies，故选复数形式的(A)。(C)(D)均为动词的非谓语形式.
12. --- map dates back to about 3,000 B.C.
(A) Known to be the oldest
(B) It was the oldest known
(C) Known as the oldest
(D) The oldest known
答案：D
测试点：习语.
分析：the+形容词最高级+known是固定说法，表示“己知的最……的”，通常作定语．空格后为完整的句子，主语前只需定语，故选(D)．(B)用了形式主语it,但句中并无真正主语that从句或不定式.
13. The best way to control rats is by seeing that they have as --- .
(A) possibly little nourishment
(B) nourishment possibly little
(C) little as possible nourishment
(D) little nourishment as possible
答案：D
测试点；as…as…结构。
分析：以空格前的as为线索，在答案中寻找含有另外那个as的结构，即(C)、(D)．(C)形容词和它所修饰的名词之间不应插入其他成份；(D)正确.
14. The small greenish flowers of the American elm tree appear in the spring, --- .
(A) is grown long before the leaves
(B) long before the leaves grow
(C) the leaves before growing long
(D) the growth of leaves before long is
答案：B
测试点：状语从句/习语.
分析：所缺为说明时间的状语，应以before开头；而短语long before语法作用与before相同，但语意更强，故选(B).
15. In the years between 1937 and 1952, author Margaret Wise Brown ---more than a hundred books but also wrote the lyrics for 21 children’s records.
(A) not only produced
(B) only not produced
(C) produced only
(D) only have produced
答案：A
测试点：not only…but also…
分析：后文的but also是关键词，应在答案中选择含有not only的形式，即(A)。
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