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system atmosphere fundamental multiply thus gentle climate crash pull float multiplied systems floated crashed Pulling astronomy astronaut astronomer religion religious violent violently violence harm harmful harmless exist existence biology biologist physics physicist physical puzzle puzzled puzzling unlike like likely theory theoretical violently violence violence violent harmful harm existence exist puzzled puzzled puzzling Unlike likes inlaytoinfromupgetoutoutoutCheered up in time prevent from broke out in your turn get the hang of gave birth to block out made it possible for life to develop twice as far as on theearth now thatgravity has changed No matter where he is，he makes it a rule to go for a walk before breakfast. She has devoted three times as much time and energy as she did before，so I believe she will succeed this time. Now that everybody is here，we can begin the meeting. 分层限时跟踪练分层限时跟踪练