问题补充:
单选题Wedonotknowhowastronautscan____whentheyspendmonthsinspacewithouttheprotectionoftheatmosphere.A.get offB.get upC.get alongD.get in
答案:
C
时间:2018-11-08 19:37:20
单选题Wedonotknowhowastronautscan____whentheyspendmonthsinspacewithouttheprotectionoftheatmosphere.A.get offB.get upC.get alongD.get in
C