下面哪些是孔子思想的内容：①“仁者，爱人”②“无为而治”③以法治国④“克己复礼”
A．①②④
B．①④
C．①③
D．①②
答案：B
I was not in Fuzhou last September, otherwise I ____ the opening ceremony of the 5th National Special Olympic Games.
A．would not have missed
B．didn’t miss
C．had not missed
D．would not miss
材料的δ、ψ值越大，其（）越好。
A.冲击韧性
B.弹性
C.塑性
D.硬度
