城镇路灯照明、农村路灯照明执行（）电价。
参考答案：居民生活
You_______that mistake；you were too careless．
A．should not make
B．should not have made
C．ought not have made
D．must not have made
水是构成身体的主要成分之一，如果失水量超过体重的（）以上，就会危及生命。
A.6％
B.4％
C.8％
D.10％
E.15%
