The president made a （） speech at the opening ceremony of the sp

The president made a （） speech at the opening ceremony of the sport meeting, which encouraged the sportsmen greatly.
A、vigorous
B、tedious
C、flat
D、harsh
【正确答案】：A
【题目解析】：vigorous精力充沛的，有力的；tedious冗长乏味的；flat平的；单调乏味的；harsh严厉的，冷酷无情的。句意为：校长在运动会开幕式上发表了气吞山河的演说，这给予运动员们极大的鼓舞。因此应选A