题目

At the meeting, they sat very_____ and had a _____ talk, but I didn’t know what they were talking about.      A. close; close    B. closely; close    C. close; closely    D. closely; closely   答案：A已知f(x)=ax3+cx+5,满足f(－3)=－3,则f(3)的值等于 A.13                                                               B.10C.7                                                                 D.3