流动比率是企业某个时点流动资产同（）的比率。
A.固定资产
B.流动负债
C.固定负债
D.偿债能力
参考答案：B
The house was sold for $60,000, which was far more than its real ____.
A．cost
B．value
C．price
D．money
人体一次失血只要超过体内血量的______就会有生命危险。[ ]
A．20%
B．30%
C．40%
D．50%
