The strong increase in imports last year is attributed to buoyant economic activity as to the success of the Government's trade and foreign investment policies. ( )
A、onerous
B、various
C、brisk
D、strong
【正确答案】：C
【题目解析】：buoyant轻快的，上涨的；onerous繁重的；麻烦的；负有义务的；various各种各样的；brisk敏锐的，轻快的；strong强壮的，强烈的。故选C。
