《城市居住区规划设计规范》规定，()层以下住宅可不安装电梯。A．6 B．7 C．8

丽水市第一座横跨瓯江的单塔斜拉式大桥紫金大桥正在建造中，在比例尺为1：500的图纸上，大桥的长度约为1.04米，则大桥的实际长度约是（　　）

A．104米

B．1040米

C．5200米

D．520米

Mark wants to buy a particular painting. He makes his request known to an art dealer who sells him the painting, providing him with a certificate guaranteeing the authenticity of the painting. Several months later, Mark has the painting valued and he is informed that the painting is a fake.Required:Advise Mark whether he may take action against the art dealer to invalidate the contract of purchase of the painting. (10 marks)

“宪法的生命在于实施，宪法的权威也在于实”是（）提出的

A.习 * *

B.李克强

C.张德江

D.张高丽

简述基因工程诞生理论上的三大发现和技术上的三大发明。

对指挥性违章者每次处以多少罚款？