— We need a room for tonight, and I’d like to take a chance to check in without reservation.

— Don’t you know about the jammed hotels in this season? ______.   

A．Better play it safe

B．Do as you please

C．No problem

D．Think nothing of it

“今天的教育，明天的科技，后天的经济”这句话给我们的启示是

①要实施计划生育的基本国策 ②把教育摆在优先发展的战略地位③要实施科教兴国战略

④要把经济发展转移到依靠科技进步和提高劳动者素质的轨道上来

A．①②③

B．①②④

C．②③④

D．①②③④