知知识识梳梳理理核核心心突突破破单单元元微微写写作作分分层层限限时时跟跟踪踪练练project connection worthwhile bond outspoken respect crowd support rate modest supports respected crowded connection worthwhile deliver delivery argue argument entertain entertainment refer reference considerate consideration achieve achievement behave behavior observe observation inspire inspired inspiring inspiration intend intention behaved behaviour achieve achievement inspired inspiring argued argument argued considerate consideration off lead/live in upon/on to by across on to out crowded in work out move off looks down upon/on came across carry on Devoted to refer to Once I stop was she allowed to begin her project Suddenly it hit me tired after a days work Why not study at medical college Once you begin，you must continue. Only when much attention has been paid to environment protection can we live in harmony with nature. It hit them how difficult it was for the student to solve the problem in such a short time. He spent seven days in the wind and snow，cold and hungry. Why not form the habit of exercising to keep fit? 分层限时跟踪练分层限时跟踪练