【单选题】计算(a-b)(a+b)(a 2 +b 2 )-(a 4 +b 4 )等于( )
【简答题】Use Baidu naotu to make revision of each unit. (Unit 1, Unit 2, Unit 3, Unit 4 and Unit 5), and Unit 8 is optional task. Send me the naotu link. Unit 1: Unit 2: Unit 3: Unit 4: Unit 5: Unit 8:
【简答题】人教版三年级下册英语作业本Unit 2 5答案
【单选题】晚唐诗歌史上和杜牧并称为“小李杜”的诗人是( )。
【单选题】Of the three windstorms, the tornado is the most dangerous because______.
B.
it costs thousands of lives
C.
it causes damage to property
D.
it frequently occurs in recent years
【单选题】旅游从业人员的素质要求体现在多个方面,其中( )是第一位的,它是对一个合格的旅游工作者的基本要求。
【简答题】已知A×B=200,则: (A×3)×B=______ A×(B÷5)=______ (A÷2)×(B÷2)=______ (A÷4)×(B×4)=______ (A÷4)×(B×8)=______.