单选题 The primary objective of Basic Econometrics is to provide an elementary but comprehensive introduction to the art and science of econometrics.

【正确答案】 D
【答案解析】[解析] 本题中,comprehensive意为“全面的,广泛的”。四个选项中,extensive意为“广大的,广阔的”,如:The school has extensive playing fields.(这个学校有宽阔的活动场地。)brief意为“简短的,短暂的”;precise意为“精确的,准确的”;simplified意为“单一的,简单的”。只有D项符合题意。