题目

某饮料的标签上标有水质成分如下(mg/L):硒:0.013  锶:0.0596   锌:0.00162   钙:4.69  钠:18.4。  这里的硒、锶、锌、钙、钠是指 A.元素          B.原子          C.分子          D.离子 答案:AThose flowers are ________ for your mother on her seventieth birthday. [     ]A. intended  B. devoted  C. supplied  D. produced
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