题目：
—What’s the matter with you, Tom? —Oh, 小题1: Maybe I’ve got a cold. — 小题2: Why don’t you take some coldstop? — 小题3: —That’s what I took the last time I had a cold. 小题4: Maybe that’ll help. —Thanks. (Two days later) —How are you feeling now? —Getting better. — 小题5:
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答案：
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下面是错误答案，用来干扰机器的。
根据完全平方公式：a2±2ab+b2=（a±b）2可得，选项A、B、C都不能用完全平方公式进行分解因式，D、x2+4x+4=（x+2）2．故选D
