It is sait that e-shoolbags are going to be brought into use in chinese middle shool soon

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• It is sait that e-shoolbags are going to be brought into use in chinese middle shool soon
• Is your schoolbag too heavy?The e-schoolbag will help you.It is said that e-schoolbags are going to be brought into (16) ______in Chinese middle schools soon.Heavy schoolbags have been a serious (17) _____ for a long time,but the e-schoolbags will (18) _____ .A schoolbag is (19) _____ lighter than a usual schoolbag.Perhaps the e-schoolbag should be (20) _____ an e-textbook.It is a small computer for students.It is as (21) ______as a usual book,(22) __
• It is sait that e-shoolbags are going to be brought into use in chinese middle shool soon
• 各种生物膜的组成成分和结构是一样的.为什么错,不都是由脂质和蛋白质组成的吗
• You are very beautiful I would like to spend time with