属于十二指肠黏膜上皮细胞的是()。 A.壁细胞 B.G细胞 C.D细胞 D.杯状细胞 发布时间:2017-05-10 17:06 │ 来源:www.tikuol.com 题型:单项选择题 问题: 属于十二指肠黏膜上皮细胞的是()。A.壁细胞B.G细胞C.D细胞D.杯状细胞E.主细胞
题型:单项选择题 (2013·高考辽宁卷)At no time ________the rules of the game.It was unfair to punish them.A.they actually brokeB.do they actually breakC.did they actually breakD.they had actually broken 查看答案
题型:单项选择题 我国已成为石油净进口国。将石油从波斯湾运至上海港,循最近航线要依次经过( )A.霍尔木兹海峡、曼德海峡、马六甲海峡B.曼德海峡、马六甲海峡、台湾海峡C.马六甲海峡、霍尔木兹海峡、琼州海峡D.霍尔木兹海峡、马六甲海峡、台湾海峡 查看答案
题型:单项选择题 Seeing a little girl crying in the street, the policeman went up to _____. [ ]A. help out B. pick out C. send out D. try out 查看答案