壳一般只承受压力，其承载力极限标志是混凝土被压坏
参考答案：对
I admired the painting, and Ted said he would like me to have___as a gift from him.
A．some
B．this
C．one
D．it
下列因素中，最易造成环境污染的是 [ ]
A．台风
B．地震
C．工厂排出的污水
D．旱涝灾
