目前尿酮体试带法不能检测（）.
A.乙酰乙酸
B.丙酮
C.β-羟丁酸
D.乙酰乙酸和丙酮
E.β-羟丁酸和乙酰乙酸
参考答案：C
In order to reduce the increasing prices of vegetables, the toll____ if a truck carrying them passes through a toll station．
A．has cancelled
B．is cancelled
C．was cancelled
D．had been cancelled
下列对丙胺太林的描述哪一项有错：
A．可用于妊娠呕吐
B．不易透过血脑屏障
C．对胃肠道M受体选择性高
D．属于叔铵类解痉药物
E．属于季铵类解痉药物
