If people ______virtual reality holidays, we ______ on an around-the-world tour．

A．invent; go

B．invented; had gone

C．invent; have gone

D．invented; would go

糖尿病神经并发症中，最常见的是（）

A.脊髓病变

B.神经根病变

C.周围神经病变

D.中枢神经系统病变

E.脑神经病变