混凝土梁板结构表面应无（）和宽度超过0.15mm的收缩裂缝。
A.孔洞
B.露筋
C.气泡
D.蜂窝
E.麻面
参考答案：A, B, D, E
—Hello!Amy,could you come to my birthday party?
--I’d love to,but my grandmother is ill.I have to her.
A.look at B.look after C.look up
－Jack, why are you late again?
－Sorry . My car _______ on my way to the company.
A．broke down
B．broke up
C．broke out
D．broke into
