题目

下列式子中，x的取值范围为x≠3的是（  ）。A.x-3            B.          C.             D.  答案：B解析:略 根据句意和所给的中文提示，写出句子中的单词。【1】Something must be done ____________(阻止)the good land from being blow away by the strong wind.【2】Today is my mother’s_____________(四十)birthday.【3】I was ______________(失望)because my best friend didn’t show up at my birthday party.【4】Remember to lock your bike. Don’t have it ____________(偷)【5】The man is seriously injured， he needs _____________(医学)treatment at once.