题目

阅读下面材料，根据其内容和所给段落开头语续写两段，使之构成一个完整的故事。Onevery hot morning, Mrs. Carr was occupied in doing housework in the kitchen,with her two kids Tom Carr and his sister Dot playing in the yard. Tom was nineyears old, but Dot was only three, and Tom took very great care of his littlesister. Suddenlya man rushed hurriedly into the yard. It was Mr. May, who lived at the nextstation, which is a big farm in Australia. Fire! he cried,Fire! One of the worst fires I ever saw in my life. Come along, Carr, andbring all your hands, Mr. Carr ca在△ABC中，∠C=90°，cosB=32，a=3，则b=（　　）A．2B．1C．4D．3