题目

— Would you mind my coming over and having a look at your new garden? My little son’s curious about those roses you grow. —________. You are welcome. A. Yes, I do       B. Never mind     C. Yes, please   D. Not at all 答案：D 解析: 略小强同学在探究血液的成分时，将等量的新鲜鸡血分别放入A、B、C、D四支试管中。在A、D两支试管内加入抗凝剂，B、C不做上述处理。静置较长一段时间后，下列图示中正确的是