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±ØÐÞ ²á\r Unit 1 A new start\r Unit 2 Exploring English oo\r Unit 3 Family matters\r Unit 4 Friends forever\r Unit 5 Into the wild\r Unit 6 At one with nature\r ±ØÐÞµÚ¶þ²á\r Unit 1 Food for thought\r Unit 2 Let's celebrate!\r Unit 3 On the move\r Unit 4 Stage and screen\r Unit 5 On the road\r Unit 6 Earth first\r ±ØÐÞµÚÈý²á\r Unit 1 Knowing me, knowing you\r Unit 2 Making a difference\r Unit 3 The world of science\r Unit 4 Amazing art\r Unit 5 What an adventure!\r Unit 6 Disaster and hope\r Ñ¡ÔñÐÔ±ØÐÞ ²á\r Unit 1 Laugh out loud!\r Unit 2 Onwards and upwards\r Unit 3 Faster, higher, stronger\r Unit 4 Meeting the muse\r Unit 5 Revealing nature\r Unit 6 Nurturing nature\r Ñ¡ÔñÐÔ±ØÐÞµÚ¶þ²á\r Unit 1 Growing up\r Unit 2 Improving yourself\r Unit 3 Times changel\r Unit 4 Breaking boundaries\r Unit 5 A delicate world\r Unit 6 Survival\r Ñ¡ÔñÐÔ±ØÐÞµÚÈý²á\r Unit 1 Face values\r Unit 2 A life's work\r Unit 3 War and peace\r Unit 4 A glimpse of the future\r Unit 5 Learning from nature\r Unit 6 Nature in words\r Ñ¡ÔñÐÔ±ØÐÞµÚËIJá\r Unit 1 Looking forwards\r Unit 2 Lessons in life\r Unit 3 The world meets China\r Unit 4 Everyday economics\r Unit 5 Into the unknown\r Unit 6 Space and beyond\r ¸½Â¼1 ½Ì²ÄÖصã¶ÌÓï