Bill suggested ______ a meeting on what

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问题选择题

Bill suggested ______ a meeting on what to do for the Shanghai Expo during the vacation. [ ]

A. having held

B. to hold

C. holding

D. hold

答案

答案：C

解答题

已知关于x的实系数一元二次方程ax²+bx+c=0有两个虚数根x₁、x₂，若|x₁-x₂|=2，且2+ai=c-1+i，求方程的根x₁、x₂．

选择题

— that he picked up French?

—It was in 1949 he traveled in France.

A．Was it when; that

B．When was it; that

C．Was it when; when

D．When was it; when