6000 metres long与6000-metre-long的区别?语法与用法性质意思上区别?怎么1楼与大家说法差别那么大？到底谁对哦，不要蒙我呀~

120-metres long 120-metres-long 120-metre long 120 metres long 哪个对? There is a ___river A.6000-metre-long B.6000 metre long C.6000-metres-long D.6000-metres long在解释一下.谢谢! 6000 metres long与6000-metre-long的区别?语法与用法性质意思上区别?怎么1楼与大家说法差别那么大？到底谁对哦，不要蒙我呀~ The swimming pool is about( )and there is also an( )playground.A.fifty metres long;eighty-metre-long B.fifty metres long;eighty metres long C.fifty-metres-long;eighty-metre-long D.fifty metres long;eighty-metres long This river is 5000 metres long. metres提问 two-year-old 与two years old有何区别这题应该怎么选，说明理由。The river through our city,which is about______,is clean again.A.6000 metres long B.6000-metre-long 4.The river through our city,which is about _________,is clean again.A.6000 metres long B.6000-metres-long C.6000-metre-long D.6000 metre long为什么？ 4.The river through our city,which is about _________,is clean again.A.6000 metres long B.6000-metres-long C.6000-metre-long D.6000 metre long该选哪个? three metres long的同义句 the swimming pool is fifty metres long.对fifty metres 划线提问划线部分是fifty metres long时呢？ three metres long 是否能写成 three-metre long? 10-metre-long和10 metres long有什么不同 the wall is ___.it is a____wallA.five meter long;five metres long B.five metres-long;five-metre long C.five metres long;five-metre-long D.five-metre long;five-metres-long 英文长度表达式 是 5000 metres long 还是 5000-metres long还是等等 .The river is very long and it is about ____.A.50 metres tallB.20 metres wideC.30 metres highD.15 metres long The river through our city,which is about 600 metres long is clean again.怎么翻译?是怎样的结构? The river is two metres long 是否等于The river is two metres in length?Why? The running track is 100 metres long.(100 metres 划线) 划线部分提问