things are on mars on earth becaus of the different gravitya much_英语解答

things are on mars on earth becaus of the different gravity
a much lighter b much lighter,than those

人气：391 ℃　时间：2019-12-25 00:23:32

解答

B
后面的those指代前面的things,意思是因为不同引力作用,火星上的东西比地球上的（东西）轻.