【题目】My brother’s plans are very ______; he wants to master English, French and Spanish before he is 10.
A. arbitrary B. aggressive C. ambitious D. abundant
在线课程【答案】C
【解析】考查形容词。A. arbitrary专职的；B. aggressive好斗的；C. ambitious有雄心的，野心勃勃的；D. abundant丰富的。句意：我弟弟的计划雄心勃勃，他想在10岁之前掌握英语、法语和西班牙语。根据句意可知是雄心勃勃的，故选C.