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【简答题】
人类的生产、生活离不开金属。 （1）目前年产量最高的金属是 ； （2）潮湿的空气里会发生锈蚀，证明氧气一定参加了反应必须要做的实验是 ； A．①② B．①③ C．②③ D．①②③ （3）Fe 2 O 3 中铁元素的质量分数为 ；某钢铁厂用主要成分是（Fe 2 O 3 ）的赤铁矿石炼铁．钢铁厂每天需要消耗1000t含杂质20%的赤铁矿石，该厂理论上可产含Fe98%的生铁的质量是 。 （4）氧化铝难溶于水，能溶于酸或强碱溶液，它溶于氢氧化钠溶液，反应生成偏铝酸钠（NaAlO 2 ）和水。请结合以上信息写出氧化铝与氢氧化钠溶液反应的化学方程式： 。 （5）在硫酸铜、硫酸锌和稀硫酸的混合溶液中，加入过量的（有剩余），使之充分反应后，过滤，则滤渣的成分是 ，滤液中含有的微粒是 。
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【单选题】下列作品中，同属叙事诗的一组是
A.
杜甫《蜀相》、李白《行路难》
B.
《诗经.氓》、白居易《杜陵叟》
C.
王昌龄《从军行》、陆游《关山月》
D.
《汉乐府.陌上桑》、《楚辞.国殇》
【单选题】听力原文： (32) Breakfast plays an important part in our dally life, and it supplies a certain of the energy for us. If we had a good breakfast, we'll have a good day. Generations of Americans have been br...
A.
A study of the Chicago-based Market Research Corporation.
B.
One of the essentials for life.
C.
Latest figures of people who don't eat breakfast.
D.
Breakfast and human health.
【单选题】主要说明"阴阳互根互用"的原文是（）
A.
"阴阳相错，而变由生也"
B.
"动极镇之以静"
C.
"阴在内，阳之守也"
D.
"阳胜则阴病，阴胜则阳病"
E.
"重阴必阳，重阳必阴"
【简答题】从方框中选择恰当的选项补全对话。其中有两项是多余的。 A. We will be free the day after that. B. I want to ask you a question. C. When are you going to take the tour? D. Could you give me some help? E. What places are you going ...
【单选题】听力原文： Breakfast plays an important part in our dally life, and it supplies a certain of the energy for us. If we had a good breakfast, we'll have a good day. Generations of Americans have been brought...
A.
A study of the Chicago-based Market Research Corporation.
B.
One of the essentials for life.
C.
Latest figures of people who don't eat breakfast.
D.
Breakfast and human health.
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