67. (28133-!-item-!-188;#058&003500)
Scientists say that each of the photographs taken of the Ares Vallis plain by the Mars Pathfinder indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that rocks were scattered by its force.
(A) indicate the overwhelming extent to flooding on the planet billions of years ago and the degree that
(B) indicate that the extent of the floods on the planet billions of years ago was overwhelming and the degree to which
(C) indicate the overwhelming extent of the floods on the planet billions of years ago and the degree to which
(D) indicates the overwhelming extent of the flooding on the planet billions of years ago and the degree to which
(E) indicates the overwhelming extent to flooding on the planet billions of years ago and the degree that
答案为D,E 为什么不对呢?
extent 范围，程度，这里是用来修饰flooding的。
举几个extent of的例子(牛津字典）：
From the roof we could see the full extent of the park.
I was amazed at the extent of his knowledge.
The full extent of the damage is not yet known.
字典上没有看到extent to+名词的用法，网上也没查到。extent to只有后面加which+从句的用法。
I suppose后面the degree to which的用法是和the extent to which的用法是一样的。
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