单选题 The new computer virus ______, the system was restored to its normal operation.
A. having removed B. being removed C. had been removed D. was removed

【正确答案】 B

【答案解析】[解析] 本题空格处是说新的计算机病毒被清除。the new computer virus being removed在句子中是独立主格结构用被动态表示，因此B项为正确答案。