名词解释：学习
学习是通过主客观的相互作用，在主体头脑内部积累经验、构建心理结构以积极适应环境的过程，它可以通过行为或者行为潜能的持久变化而有所表现。
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Agingparents
题目：Describinggraphs
Annualleave
InourletterofMay5,wemade__________clearthatshipmentistobeeffectedinJune.
DearMr./Ms,
Mr.JohnGreen,ourGeneralManager,willbeinParisfromJune2to7andwouldliketocomeandseeyou,say,onJune3at2.00p.m.abouttheopeningofasampleroomthere.Pleaseletusknowifthetimeisconvenientforyou.Ifnot,whattimeyouwouldsuggest.Yoursfaithfully,
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