题目

 Some American women think it is men’s business to earn money and ______ to spend it. A. theirs           B. their            C. them             D. they 答案：A下列数据为4份雨水样本的酸碱度值，其中能明确判断为酸雨的是（　　）A.5.8B.6.1C.4.6D.7.0