对下列化学用语中“2”所表示意义的理解，错误的是（　　）

根据中文提示写出单词或词组，使句意完整、正确。
1.—Could you please do me a favor? —Sorry. I am ____ (忙的) now.
2.—They are ____ (英雄) in my eyes.  —I agree with you. We should learn something from them.
3.—Too much ____(噪音) can make you deaf.  — I think so.
4.— Long time no see!  — Yeah, I have____  (参观) Japan for three months.
5.— How time flies! It’s June now.   — Yeah, we should try our best to make our dream____ (实现).

方程2x（x－3）＝5（x－3）的根为（   ）

下列关于“岁寒三友”松、竹、梅的形态、结构和生理特征的说法中，错误的是（　　）