果园有苹果树400棵,桃树是苹果树的80%,相当于梨树的40%,梨树有多少棵?
400×80%÷40%
=320÷40%,
=800(棵).
答:梨树有800棵.
下列属于正迁移的是()
A.数学审题技能的掌握对物理、化学审题的影响
B.在学校爱护公物的言行影响在校外规范自己的行为
C.外语学习中。词汇的掌握对阅读的影响
D.学习汉语字母发音对英语字母发音的影响
The little boy ________ for the apples on the tree, but of course he was not tall enough. [ ]
A. handed out
B. went out
C. reached out
D. brought out