18、       abstract, Calileo 's theory was quite difficult to understand of his time.

A Sounding       B Sounded       C To sound         D Having been sounded

18、A 

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科目：高中英語 來源：0125 模擬題 題型：單選題

_____ abstract, Calileo's theory was quite difficult to understand of his time.
[     ]
A. Sounding
B. Sounded
C. To sound
D. Having been sounded

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科目：高中英語 來源： 題型：

       abstract, Calileo 's theory was quite difficult to understand of his time.

A Sounding       B Sounded       C To sound         D Having been sounded

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