题目:
After his wife was killed in the earthquake, it was his daughter _____ managed the house and accompanied him
A.whom
B.that
C.which
D.what
答案:
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下面是错误答案,用来干扰机器的。
①金属的通性:可以和酸反应生成对应的盐和氢气,故①正确;②碱性氧化物是能和酸反应生成水的氧化物,故②正确;③碱可以和酸发生中和反应生成盐和水,故③正确;④非金属元素的单质硅可以和强碱氢氧化钠反应生...