当水泥混凝土垫层铺设在基土上,且气温长期处于0℃以下时,应设置( )。
A.伸缩缝 B.沉降缝 C.施工缝 D.膨胀带
参考答案:A
The last few years ________ many disasters in and out of China, from earthquake to drought.[ ]
A. see
B. are seeing
C. have seen
D. saw