历年托福考试语法真题全面解析53
21. Jazz first flourished in New Orleans, Louisiana, and then spread at cities all across the country.答案：C
测试点：介词.
分析：cities前不用介词at，而用in.
22. Flower have long been cultivated and bred for their beauty and their fragrance.
答案：A 测试点：主谓数的一致.
分析：动词是复数的have，推知主语应也是复数的．应为Flowers.
23. When a spinning ball bounces, some of the energy contained in its rotation can transferred to its energy of forward motion.
答案：C 测试点：被动语态.
分析：can后接动词原形，不能接分词．(C)can transferred是错误形式．根据句意，应为被动语态can be transferred。
24. One values product of a musk deer is musk, which comes from a gland near the male’s abdomen and is used in medicines and perfumes.
答案：A
测试点；词性.
分析：(A)应用形容词valuable修饰主语名词product.
25. The economy of Little Rock, Arkansas, is basis primarily on manufacturing, wholesale and retail trade, and government functions.
答案：B
测试点：习语.
分析：Be based on是固定的短语，不用名词形式basis.
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