题目

若cosθ＞0，sinθ＜0，则角θ的终边所在的象限是（） A . 第一象限 B . 第二象限 C . 第三象限 D . 第四象限 答案：D There’re too many clothes in the shop. I really can’t decide           .A．which to buy coatB．to buy which coatC．which coat should I buyD．which coat to buy