作者ginno ()
看板Eng-Class
標題[文法] 托福pp文法
時間Wed Feb 22 22:13:57 2006
The surface of Venus is obscured by the plant's thick clouds
^^^^^^^^^^ ^^^^^^
A B
yet so is invisible to optical instruments
^^^ ^^
C D
答案是C
請問要怎麼改呢?
thanks
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