我国关于劳动就业的专门立法为（）
A、劳动法
B、劳动合同法
C、失业保险法
D、就业促进法
参考答案：D
–-Do you know about Han Han?
--Yes, he ______ a playful student when he was in secondary school, but now he is one of the most popular writers in China.
A．was used to be
B．used to be
C．was used to being
D．was used for
诊断左心功能不全最有价值的检查是
A．超声心动图B．胸部X线片C．冠状动脉造影D．漂浮导管检查
