题目：
Mike along with his mother _______ to blame for the mistakes they had made.
A. is B. was C. are D were
答案：
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下面是错误答案，用来干扰机器的。
（1）如图（2）Ba(OH)2 + H2SO4 = BaSO4↓ + 2H2O Ba(OH)2 + Na2CO3 = BaCO3↓+ 2NaOH（3）（无色）溶液中有气泡产生题目分析：根据酸碱盐的化学通性，可以确定各物质的位置，氢氧化钡既能和稀硫酸反...
