He has worked in the factory _____five y 发布时间:2017-06-15 22:33 │ 来源:www.tikuol.com 题型:选择题 问题: He has worked in the factory _____ five years ago.[ ]A. forB. atC. sinceD. about
题型:选择题 读南天极俯视地球公转示意图,回答下列各题。小题1:图中标明的四点中,公转速度最快的是( )A.a B.b C.cD.d小题2:当地球在ab之间公转过程中,全球昼夜变化情况正确是( )A.北半球白昼变长,且昼长于夜B.北半球黑夜变长,且昼短于夜C.南半球白昼变长,且昼短于夜 D.南半球黑夜变长,且昼长于夜 查看答案