为使统计分析资料有说服力,实查率应()
A.大于95%
B.大于90%
C.小于95%
D.小于90%
E.大于85%
参考答案:B
城市建设与发展过程中如果规划不当,到了炎热的夏天往往会出现热岛效应,下列有关热岛效应的表述不正确的是( )
A.城市增加的车辆与住户的空调加剧了热岛效应
B.热岛效应只会在大城市出现,中小城市不会出现这种情况
C.出现热岛效应的地,温度比周围郊区一般要高两三度甚至三五度
D.城市高楼大厦越来越多,通风与气流不畅是造成热岛效应的原因之一
I didn't see Lucy at the party last night. Do you know_______?[ ]
A. why didn't she come
B. what happened
C. when would she arrive
D. where she has been