题目

阅读下面短文，从短文后各题所给的四个选项(A、B、C和D)中，故答案选出可以填入空白处的最佳选项，。 I've been taking a bus to school for years. I found that most passengers keep to themselves and no one ever has a 1 with anyone else. About a year ago, an elderly man entered and said 2 to the driver, “Good morning!” Most people looked up, confused and 3, and the bus driver took it for granted and 4responded with a grunt (哼声). The next day the man 5 and again he said in a loud voice, “Good morning!” to the driver. Another grunt. By the fifth day某一小孩患了佝偻病，请判断该小孩体内可能缺乏①维生素A ②维生素B ③维生素C ④维生素D ⑤含铁的无机盐 ⑥含钙的无机盐A．①② B．③④C．②⑤ D．④⑥