一次函数y=kx+b的图象同时经过第一、三、四象限的必要但不充分条件是[ ] A 发布时间:2017-04-17 07:50 │ 来源:www.tikuol.com 题型:选择题 问题: 一次函数y=kx+b的图象同时经过第一、三、四象限的必要但不充分条件是[ ]A.k>0且b>0 B.k<0且b>0 C.k>0且b<0 D.k<0且b<0
题型:选择题 完形填空。 There are twenty-seven boys and twenty girls in our class. 1 of the boys is English.His 2 is John.He is thirteen.He likes 3 very much.But he is not good at it.Two of the 4 are American.They are twins.5 names are Mary and Jane.They are twelve.They ?always? 6 the same clothes.They are my 7 . All the other boys and girls are 8 .We Chinese students all like the English boy and the American girls.They like us,too.We 9 games together and we help each other.Look,there 10 the twins!They are coming this way.Let's say hello to them.?( )1.A.One ( )2.A.Class ( )3.A.the football ( )4.A.girls ( )5.A.Their ( )6.A.put ( )7.A.friends ( )8.A.Chinese ( )9.A.do ( )10.A.come B.Two B.SchoolB.footballB.girlB.TheyB.wearB.sistersB.English B.play B.comesC.Three C.name C.a football C.boys C.Them C.on C.teachers C.American C.have C.to come 查看答案
题型:选择题 患者女,46岁,因“强直性脊柱炎”来诊。患者3年前反复发作腰骶部疼痛、乏力,腰部活动受限,尤以俯仰更为明显,曾诊断为“强直性脊柱炎”,口服西药控制,但近2个月自觉症状加重。查体:一般可,舌质淡胖,边见齿痕,苔薄,脉沉细。可采用的治疗方案有()A.直接灸B.温针灸C.铺灸(隔蒜灸)D.蒜泥灸E.艾卷灸F.灯火灸 查看答案
题型:选择题 用电子显微镜观察A、B、C的细胞结构,观察到细胞结构a到e具有如下特征:abc均由双层膜构成,其中a的膜上有小孔,而b、c没有小孔;从d的周围发出丝状物;e由几个囊状结构重叠而成。将试样A、B、C的细胞结构有无作表如下:(+:存在;—:不存在),由此判断,试样A、B、C分别可能是()A.菠菜叶、大肠杆菌、鼠肝B.大肠杆菌、菠菜叶、鼠肝C.大肠杆菌、鼠肝、菠菜叶D.鼠肝、菠菜叶、大肠杆菌 查看答案