一道SAT语法题9.The eerie sons of humpback whales often lower in p

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/16 05:49:40

一道SAT语法题
9.The eerie sons of humpback whales often lower in pitch and longer than birds,are intriguing to scientists partly because whales have no functional vocal cords.
A.as it is now
B.the eerie songs of humpback whales,which are often lower in pitch and last longer than birds
C.humpback whale’s eerie songs,often pinched lower and longer than that of birds
D.the eerie songs of humpback whales,often lower in pitch and lasting longer than those of birds.
E.often being lower in pitch and lasting longer than birds,the eerie songs of humpback whales
B和D有什么区别?为什么不能选B?

首先,大意是：驼背鲑鱼的奇异的歌声相对于鸟类来讲总是音调更低,持续更长.这种歌声在一定程度上激起了科学家的兴趣,因为鲸类并没有实用的声带.
看B选项：这里表达声音长于鸟类的时,指代错误.D而这方面是对的.

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