2009年5月26日，国家卫生部公布，湖南长沙确诊了首例输入性甲型HINI流感病例，这意味着源于境外部分地区的甲型HINI流感离我们越来越近了．

测量液体密度的仪器叫密度计，将其插入被测液体中，待静止后直接读取液面处的刻度值（图甲）．图乙和图丙的容器中是同一个自制的简易密度计，它是在木棒的一端缠绕一些铜丝做成的，将其放入盛有不同液体的两个烧杯中，它会竖直立在液体中，由图中现象可以判断（    ）

根据短文理解，选择正确答案。

    Frederick was ill and went to the hospital. A doctor looked him over and said, "Well, Mr Green, you're going to get some injections(针), and you'll feel much better. A nurse will come and give you the first this evening, and you'll have to get another one tomorrow evening.'' In the evening a young nurse came to Frederick's bed and said to him. "I'm going to give you your first injection now, Mr Green. Where do you want it?"

    The old man was surprised. He looked at the nurse for a while, then he said, "Nobody has ever let me choose that before. Are you really going to let me choose now?"

    "Yes, Mr Green," the nurse answered. She was in a hurry, "Where do you want it?"

    "Well, then,'' the old man answered with a smile, "l want it in your left arm, please."