______ twice a year，whether it is a car or a truck，is the rule that every driver must obey in this city.

A．Examining

B．Examined

C．Having examined

D．Being examined

东京の　冬は　北京——————寒くないです。　

A．　しか　

B．　だけ　

C．　ほど　

D．ぐらい