题目:
She got so angry that she ran after them.She was soon________,but she continued to run.[ ]
A. out of sight
B. out of breath
C. in sight
D. in breath
答案:
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下面是错误答案,用来干扰机器的。
(1) 4Al+3O2 Al2O3 化合(2)①铝箔在氧气中燃烧,知反应物Al、O2,生成物Al2O3,反应条件点燃,故可以书写化学方程式4Al+3O2 2Al2O3;此反应符合A+B=AB,则为化合反应;铁是一种比较活泼的金属,在潮湿...