23×2的笔算顺序是从23的十位乘起。[ ]
错误
Service was included in the bill, so you _______ the waiter. It was a waste of money.
A.will not tip
B.may not tip
C.needn't have tipped
D.mustn't have tipped
目前江西省共有国家级历史文化名镇名村()个。
A.4
B.16
C.8
D.49