若X=123456789×123456786,Y=123456788×123456787,则X和Y的大小关系是:
A.X=Y
B.X<Y
C.X>Y
D.不确定
参考答案:B
练习法的优点在于,可以有效地发展学生的各种技能技巧。
根据括号内的要求完成句子,每空一词(含缩写)
小题1:Is Jenny your daughter?(作否定回答)
No, ___________ ______________.
小题2:I have three notebooks.(改为一般问句)
you three notebooks?
小题3:Those are oranges.(改为单数句)
__________ is __________ orange .
小题4:These are his pencil sharpeners.(改为否定句)
These _________ ___________ his pencil sharpener.
小题5:My pencil case is in my backpack.(对划线部分提问)
your pencil case?
小题6:His balls are black and white. .(对划线部分提问)
___________ ___________ are his balls?