题目

下列分子中所有原子既不在同一直线上，又不在同一平面内的是（    ） A.C2H4          B.C2H2                  C.C6H6                  D.CH3—CH = CH2 答案：D–Jane Zhang is going to hold a concert here in July.-- Really? ________ exciting news!A. How B. What an C. What