_________, so he is afraid of dogs .

A．Having been bitten twiceB．Bitten twice
C．After he has been bitten twiceD．He has been bitten twice

D

解析試題分析：考察動詞的非謂語形式辨析
句意為：他被狗咬過兩次，所以很怕狗
從語法上看，該句式一個(gè)原因狀語從句。前句應(yīng)是一個(gè)完整的單句，故選D 
考點(diǎn):考察動詞的非謂語形式辨析 
點(diǎn)評：考察動詞的非謂語形式辨析。命題者從句子的形式出發(fā)設(shè)置視覺障礙，考生常常會根據(jù)逗號就先入為主的判斷用動詞的非謂語形式，不過后面有一個(gè)連接詞。這就是所謂的‘螳螂捕蟬黃雀在后’,為了避免錯(cuò)誤，考生應(yīng)認(rèn)真審題，切不可大意。

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