贴现国债是按()的价格发行的国债。
A、高于面值金额
B、低于面值金额
C、等于面值金额
D、记账式国债
参考答案：B
The researchers found clear and convincing evidence _________ happiness is the key when it comes to better health and longer lives.
A．where
B．whether
C．how
D．that
下列工业生产属于轻工业的是[ ]
A．开采铁矿
B．冶炼钢铁
C．纺纱织布
D．制造机器
