----- Hi, Mark. How was the musical evening? ----- Excellent! Ales and Andy performed _________ and they won the firs prize. A. skillfully B. commonly C. willingly D. nervously 答案:A 解析: 本题考查副词。四个副词的意思分别是skillfully巧妙地, 技术好地;commonly 一般,普通,通常;willingly自动地,欣然地;nervously 焦急地。上文问音乐晚会怎么样?回答是非常好,自然Ales和Andy是娴熟地(skillfully)表演并获得第一名。已知向量=(1,-2),=(-3,4),则等于A.(-2,3)B.(2,-3)C.(2,3)D.(-2,-3)