保健品“黄金搭档”组合维生素片中含钙、铁、锌、硒等元素，其中

保健品“黄金搭档”组合维生素片中含钙、铁、锌、硒等元素，其中属于组成生物体的大量元素的是

A．钙 B．铁 C．锌 D．硒

答案

相关题目

设斜率为1的直线l与椭圆相交于不同的两点A、B，则使为整数

设斜率为1的直线l与椭圆相交于不同的两点A、B，则使为整数的直线l共有（ ▲ ） A．4条 B． 5条 C． 6条 D．7

He tried hard to keep calm before the policemen but the sweat on his forehead __

He tried hard to keep calm before the policemen but the sweat on his forehead ________. A．gave him away B．turned him down C．got him across D．took him off

— We are getting married! — ______________ A. Congratulations! B.

— We are getting married! — ______________ A. Congratulations! B. You are really happy! C. Oh, really? D. Congratulate!

It was more than he could bear when his old friend ______ him to accept a ciga

It was more than he could bear when his old friend ______ him to accept a cigarette. A. invited B. urged C. persuaded D. agreed

已知水在25℃和95℃时，其电离平衡曲线如右图所示：（1）25

已知水在25℃和95℃时，其电离平衡曲线如右图所示：（1）25时，将＝9的NaOH溶液与＝4的溶液混合，混合所得溶液的＝7，则NaOH溶液与溶液的体积比为 �

已知正方形的边长为a，依次连结正方形各边中点得到小正方

已知正方形的边长为a，依次连结正方形各边中点得到小正方形，再依次连结小正方形各边中点得到更小的正方形，如此进行下去，求所有正方形的面积

________she has got!A. What good knowledge of English B.

________she has got!A. What good knowledge of English B. What good a knowledge of English C. How good knowledge of English D. How good a knowledge of En

宋神宗任用王安石进行变法，其根本目的是（） A .维

宋神宗任用王安石进行变法，其根本目的是（） A .维护统治 B.提高北宋军队战斗力 C.缓和阶级矛盾 D.发展经济

保健品“黄金搭档”组合维生素片中含钙、铁、锌、硒等元素，其中

答案

相关题目

最新题目