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问题 选择题

下列变化中，是氧化反应而不是化合反应的是（　　）

A．照明弹照明时镁粉燃烧发出耀眼的强光

B．烟雾弹是利用磷燃烧时产生大量的白烟

C．停电时，点燃蜡烛照明

D．工业上用分离液态空气的方法制取氧气

答案

答案：C

完形填空

根据中文提示写出正确的单词形式.

小题1:The _______ （质量） of their life has greatly improved when they moved to France.

小题2:This mistake was caused by her lack of ______（判断）about the situation.

小题3:All people are _______ (平等的) as we are living on the same planet.

小题4:Old people prefer the ________ （平静的） life in the countryside to the noisy life in the city.

小题5: The woman returned to the shop the following morning _________ (穿着) in a fur coat, with a handbag in her hand.
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单项选择题

一般缺铁性贫血患者服用铁剂以铁剂吸收率为30%计，日服元素铁

A．80mg

B．100mg

C．140mg

D．180mg

E．220mg

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