大全517

1.        Most nations regard their airspace as extending upward as high as an aircraft can fly; no specific altitude, however, has been officially recognized as a boundary.

(A) as extending

(B) as the extent

(C) to be an extent

(D) to be an extension（A）

(E) to extend

为什么用A啊？

答案A, 沒問題,regard .... as....

新問題是關於後半句, 比較對象的問題,....

Most nations regard their airspace as extending upward as high as an aircraft can fly.

請問an aircraft can fly 的比較對象是誰? 是當副詞嗎? 如何還原回去?

謝謝..

翻译一下：

大多数的国家认为是只要是飞机能飞到的高度的地方都是它的领空，这里的extending upward as high as an aircraft can fly.是修饰airspace 的

选项 A 和 B　有什么区别 ？

从意思上理解 A：extending upward 指向上延展

             B：指在程度上————

 所以选A