引起呕吐的病因包括()
A.反射性呕吐
B.中枢性呕吐
C.前庭功能障碍性呕吐
D.神经性呕吐
E.疼痛呕吐
参考答案:A, B, C, D
She is hungry. She wants _____ some water. [ ]
A. eat
B. to eat
C. drink
D. to drink
GDP冲减指数度量通货膨胀时的优点在于()。