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（1）锌是人体不可缺少的微量元素，对儿童的生长发育起着重要的促进作用，每天只需要锌13-15毫克，锌缺乏，就会导致食欲减退，皮肤粗糙，儿童智力发育不良、发育迟缓以及贫血等。合理的补充锌，可使白细胞作用增强，调整因生理老化带来的免疫紊乱，发挥最佳免疫功能。同时，补锌还可减弱细胞毒素的毒害，对人体抗御感染起重要作用。葡萄糖酸锌可以应用到各类食品中，特别是在补锌产品中因对人体副作用小、吸收性好的特点而被广泛使用。下图是某品牌葡萄糖酸锌口服液的标签，请根据标签信息计算葡萄糖酸锌中锌元素的质量分数为多少？(要求列式计算，精确到0.1%) （2）实验室常用过氧化氢和二氧化锰来制取氧气，若需制取氧气9.6g,理论上需要质量分数为5%过氧化氢溶液多少g?(反应化学方程式:2H 2 O 2 2H 2 O+O 2 ↑)
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【单选题】What do the majority of the people in the world use for health care?
A.
Strange and wonderful equipment.
B.
Factory-produced chemicals.
C.
Modem medicines.
D.
Plants.
【单选题】—What do you think of the new movie directed by Jackie Chan? —Well, most people think it is wonderful. But _____, it is just a new one, nothing special.
A.
pardon me
B.
I agree
C.
in my opinion
D.
it is all right
【单选题】What do the majority of the people in the world use for health care?
A.
Strange and wonderful equipment.
B.
Factory-produced chemicals.
C.
Modern medicines.
D.
Plants.
【简答题】Michael Jordan was born on February 17, 1963. In 1984 he joined the NBA’s Chicago Bull. His wonderful performance with leaping ability earned him the nickname “Air Jordan”. In 1991, he won his first N...
【简答题】A．Extraordinary, terrible, unreliable. B．Extraordinary, wonderful, temperate. C．Wonderful, temperate, drafty. D．Temperate, mild, extraordinary.
【单选题】What do the majority of the people in the world use fox health care?
A.
Strange and wonderful equipment.
B.
Factory-produced chemicals.
C.
Modern medicines.
D.
Plants.
【单选题】The coffee is wonderfu;! It doesn't taste like anything I ________ before.
A.
was having
B.
have
C.
have ever had
D.
had ever had
【简答题】“神韵”这个概念最早出现在()时期。
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