人教课标版高一必修3Unit4ExtensivereadingExtensivereadingExtensivereadingExtensivereadingspacewalkLookatthepictures!ReadandthendescribethethreewaysinwhichgravitychangedforLiYanpingandhowhisweightchanged.1.Thepullofgravitybecameverystrongshelefttheearth’satmosphere.Hisweightisnormal.2.Itdis...

时间:2024-11-19 10:06栏目:幼儿/小学教育