59. On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.
A. On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow
B. On Earth, among the surest indications of sunspot cycles are, it is believed, the rate of tree growth
C. On Earth, the rate at which trees grow is believed to be among the surest indications of sunspot cycles
D. Among the surest indications on Earth of sunspot cycles, believed to be the tree growth rate
E. Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow
A: among倒装，主语应该是the rate所以用单数is
B: 同上
C: their的指代存在歧义，离它最近的是sunspot cycles
D: believed应该用被动
E: correct
注意：
1、 倒装结构下谓语和主语的主谓一致
2、 了解清楚On Earth的修饰对象是谁
3、 Their出现指代问题
GWD答案是C
请谁来确认一下？
另：呼吁大家订正一下prep，好像是颇有一些题目和以前的答案不一样的。
又是一整天没有人搭理我 谁帮忙讨论一下这道题目的答案阿
多谢多谢
我觉得E更好,选项C中on earth作为副词修饰整个主句,修饰范围太广.
选项E,on earth修饰indications修饰明确
on earth 在地球上
怎么会有修饰范围的问题呢？
举个例子吧:
Quickly, he picked up the wallet and returned it to me
He picked up the wallet quickly and returned it to me
其中第一个句子quickly修饰整个句子,既可以修饰picked up又可以修饰returned
而第二个句子quickly只能修饰picked up
因此存在一个副词修饰范围的问题
这是我对Prep 59的看法,还希望大家多加讨论
楼上非常有理。这道题根本不是其它帖子所说的指代啊什么的错误，关键是on earth的位置：是在地球上的最sure的indication，而不是在地球上，树的生长blabla。。。。on earth 放前面和句子中间区别开来,那就只有DE，D没有谓语动词，所以是E
同意楼上的。
On Earth, among the surest indications of sunspot cycles are believed to be the rate that trees grow, as seen in the rings visible in the cross sections of their trunks.
加上一点：未划线部分的as seen in the rings visible in the cross sections of their trunks.的比较对象是the rate at which trees grow，比较的对象离得越近越好。
C. On Earth, the rate at which trees grow is believed to be among the surest indications of sunspot cycles 太远。
E. Among the surest indications on Earth of sunspot cycles is believed to be the rate at which trees grow 最好。
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