已知数列是等比数列，数列是等差数列，若，，则的值是（ ） A．1 B． C．
After going to school, my little son has _____many bad habits. A. got away from B. broken from C. kept away from D. stayed away from
有一个商店把某件商品按进价加20%作为定价，可是总卖不出去；后来老板按定价降价20%以96元出售，很快就卖掉了.则这次生意的赢亏情况为（ ） A
I often went fishing up in Maine during the summer. Personally I am very fond of strawberries and cream, but I have found that for some strange reason, fish prefer insects. 36 I thought about
如图所示，质量为m、带电荷量为+q的微粒以初速v0竖直向上射入两带电平行板两极间水平向右的匀强电场中，匀强电场的电场强度为E，微粒垂直打到右
右图是人体局部内环境示意网。以下叙述正确的是 （ ） A．l和2的细胞所处的具体内环境相同 B．人体摄入的营养物质太少会使A液
五氧化二钒广泛用于冶金、化工等行业，主要用于冶炼钒铁．用作台金添加剂，占五氧化二钒总消耗量的80%以上，其次是用作有机化工的催化剂，为了
____________ they are brothers, they look like each other. A. Because B. Though C. When D. So
