东莨菪碱治疗效果较差的是:
A.晕动症B.溃疡病C.胆绞痛D.妊娠呕吐E.麻醉前给药
参考答案:C
There ________ some CDs on the shelf. [ ]
A. is
B. are
C. have
D. has
测试用例包括输入值集和______值集。