1、Unit6 Happybirthday!PartB(3)词汇积累练一、算一算,选择正确的答案,将答案的序号写在横线上。(30分)1.two+three=________2.ten÷five=________3.nine-six=________4.three×three=________5.nine-one=________6.four+three=________语句应用练二、单项选择。(20分)( )1.Hello,Sarah.This________myfriend,Mike.A.am B