“言必信，行必果，硁硁然小人哉”是（）针对信而言。
A.老子
B.孟子
C.孔子
D.曾子
参考答案：C
在对天然气管路检查中，不能使用（）直接敲击管道。
A.木棒
B.铜棒
C.塑料棒
D.铁器或铁制工具
Questions 1-4
Why did people put up the slogan "save the whales"？（）
A．They think whales are their friends.
B．They believe whales can save humans.
C．They wanted to ban whale-hunting.
D．They enjoy watching whales in an aquarium.
