题目

Ⅰ.用所给单词的适当形式填空【1】Many people were ______(die)because they didn't get to hospital quickly enough.【2】Norman Bethune invented new tools for ______(operate)to help the ______(wound)soldiers.【3】Though he was very tired,he ______(continue)his work.【4】He jumped into the water ______(save)the child without______(think)about it.【5】Odysseus managed ______(get)away and at last he succeeded.我们的祖先很早就掌握了用孔雀石(主要成分是Cu2(OH)2CO3)和木炭一起加热进行火法炼铜的工艺,早在3000多年前的商朝就造出“后母戊鼎”(如图15)等许多精美的青铜器。有关的化学方程式是:①Cu2(OH)2CO3 2CuO+H2O+CO2↑②C+2CuO 2Cu+CO2↑在西汉时期就开始湿法炼铜的应用,当时刘安所著的《淮南万毕术》中,就有曽青得铁則化为铜的记载,是回答下列问题:(1)上述反应①属于          反应(填“分解”“化合”“置换”“复分解”之一)(2)青铜属于             (填“氧化物”“单质”“化合物”“合金”之一)(3)单质铁的金属活动性        单质铜的金属活动性(填“大于”“等于”“小于”之一)(4)以“绿色化学”的观点,对照火法炼铜,谈谈湿法炼铜的优点                   
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