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标题: GWD14-38 [打印本页]

作者: lena110220 时间: 2008-5-6 22:25
标题: GWD14-38

38. GWD17-Q38:

All Y chromosomes in existence today are descended from a single ancestor’s who is thought to have lived about 140,000 years ago.

A. a single ancestor’s who is thought to have lived

B. a single ancestor’s who was thought to live

C. a single ancestor whom it is thought had lived

D. the Y chromosome of a single ancestor who is thought to have lived

E. the Y chromosome of a single ancestor whom it was thought had lived

正确答案D, 我选B

作者: 愁予 时间: 2008-5-6 22:50
who不能修饰所有格，d的修饰对象就很清楚了

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