流动比率
参考答案：
解析：是流动资产除以流动负债的比值，反映企业的短期偿债能力。
单句改错。
1. my name is betty and i'm from america.
____________________________.
2. these are my friends.
3. she can't play basketball.
4. She is american and she's a secretary in china.
5. these american teachers can speak chinese.
从计划的维度来定义课程的学者有（）。
A.弗洛伊德
B.博比特
C.塔巴
D.坎贝尔
