甘草皂苷是( )
A．B-香树脂烷型三萜类
B．α-香树脂烷型三萜类
C．达玛烷型三萜类
D．羊毛脂甾烷型三萜类
E．甾醇类
参考答案：A
I wonder why you didn’t do as ________ and it’s the third time you have done this.
A．telling
B．be told
C．told to
D．tell
状态修
