属于日内瓦统一票据法系的国家有______。
A．德国
B．法国
C．英国
D．日本
E．美国
参考答案：A,B,D
农村实施《生活饮用水卫生标准》准则中水质分为几级（）。
A.1
B.2
C.3
D.4
E.5
— Didn't your friends play computer games yesterday?
— _________. They watched TV yesterday. [ ]
A. Yes, they didn't
B. No, they did
C. No, they didn't
D. Yes, they did.
