题干
— I'm hungry. ________ there any bread in the fridge, Mum?
— None, but we have cakes. Would you like to have one?
A：Is
B：Are
C：Will
D：Have
答案(点此获取答案解析）
A
— I'm hungry. ________ there any bread in the fridge, Mum?
— None, but we have cakes. Would you like to have one?
A：Is
B：Are
C：Will
D：Have
）和抗癫痫药物H（ 
）的路线如图（部分反应略去条件和试剂）： 
+H2O（R、R′表示烃基或氢）
为偶数）时命题为真，则还需要用归纳假设再证 （ ）