证明：因为∠A=30°，∠B=60°，所以∠A<∠B.
所以a<b.其中，划线部分是演绎推理的( )
A：大前提
B：小前提
C：结论
D：三段论
There _____________ a pen and two pencils in the pencil case.
A.Where did you go over the winter holiday?
B.How tall are you?
C.Did you see a film last night?
D.You didn't come to school. What happened?
E.Are you all right?
⑴____ ⑵____ ⑶____ ⑷____ ⑸____
