题目

  I _____ ten minutes to decide whether I should reject the offer. A. gaveB. was given  C. was givingD. had given 答案:B 解析: give是及物动词,give sb. sth的被动形式。若分式的值为零,则x的值为(     ) A. 1    B. -1     C. ±1    D. 0
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