题目

---- Really, I don’t know ______ to join the army or to find a job after my graduation. ---- Why don’t you ______ your parents’ advice? They will surely help you. A.if; take           B.whether; follow          C.if; give            D.whether; seek 答案:D直线L1:2x+(m+1)y+4=0与直线L2:mx+3y-2=0的平行,则m的值为 (    ) A.2        B.-3        C.2或-3       D.-2或-3
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