导致消化性溃疡的主要因素之一是()
A.大肠杆菌
B.胰岛素分泌不足
C.幽门螺杆菌
D.消化道痉挛
E.白色念珠菌
参考答案:C
-Do you need any help, Lucy?
-Yes. The job is ____I could do myself. [ ]
A.less than
B. more than
C. no more than
D. not more than
我们应该如何更好运用教学媒体技术?