三根钢材的长分别是12米、18米和24米。要把它们锯成同样长的钢材且不浪费，问每根最长是几米？这样一共可以锯几段？
6米；9段
用方框中所给的单词的恰当形式填空，每词限用一次。
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小题1:The weather here was terrible in winter. It was often cold and ______.
小题2:Mrs Smith is a short woman_____ long hair.
小题3:I’d like an ____and a glass of milk for breakfast.
小题4:Mary _____ her grandparents last week.
小题5:I like Jackie Chan very much. He is a popular ______
关于补钾的要求哪项不合适（）
A.一般每日补钾总量按3～4mmol／kg
B.静脉补钾的浓度不超过0.3％
C.一日补钾量不少于6～8小时给入
D.见尿补钾
E.吐泻好转应及时停止补钾
