【单选题】【消耗次数:1】
The old lady _____and fell from the top of the stairs to the bottom.
slided
slipped
split
spilled
参考答案:
复制
纠错
相关题目
【单选题】 While being questioned on the court, the man denied ____ the old lady’s necklace.
①  having taken
②  taking
③  to have taken
④  to take
【单选题】 While being questioned on the court, the man denied _____the old lady’s necklace.
①  having taken
②  taking
③  to have taken
④  to take
【单选题】 The old lady was _______ to the young man who helped her find her lost generation.
①  touched
②  cheerful
③  gratefu
④  generous
【单选题】 ____ from the top of the hill, the city is just like a garden.
①  To see
②  Having seen
③  Seen
④  Seeing
【单选题】 6.The old lady fainted on the street and found herself in the first aid room when she came_________.
①  across
②  over
③  in
④  to
【单选题】 The child who fell dow from the second floor_______to the hospital already.
①  has taken
②  is taken
③  has been taken
【单选题】 My boss is a 40-year-old man, _______ wife is from Australia.
①  that
②  which
③  whose
【单选题】 14.The thief fell to the ground,his left foot ____and blood ____down from his mouth.
①  breaking; running
②  broken; running
③  breaking; run
④  broken; run
【单选题】 The thief fell to the ground,his left foot________and blood________down from his mouth.
①  breaking;running
②  broken;running
③  breaking;run
④  broken;run
【单选题】 But for the immediate help from his neibour, the old man______of hunger fifteen years ago.
①  must die
②  must have died
③  would die
④  would have died
随机题目
【判断题】 单体黄酮的含量测定,如葛根中葛根素的测定,只能用高效液相色谱法,不能用薄层扫描法或者荧光分光光度法。
①  正确
②  错误
【判断题】 中药制剂中总黄酮的含量测定,可采用紫外分光光度法
①  正确
②  错误
【多选题】 下列具有明显抗癌作用的黄酮类物质是
①  银杏黄酮
②  紫檀素
③  黄柏素
④  异芒果素
⑤  桑色素
【多选题】 皂苷类药物的特点有
①  遇碱显红-紫红色
②  遇硫酸显色并增强UV吸收
③  溶血作用和泡沫反应
④  盐酸-镁粉反应
⑤  多无共轭体系,无明显UV特征
【多选题】 关于黄酮类化合物的理化性质,下列说法正确的是
①  黄酮类化合物都溶于水
②  黄酮类化合物因其结构不同,溶解度差异大
③  黄酮苷一般易溶于水、乙醇、甲醇
④  黄酮苷一般易溶于石油醚、氯仿等有机溶剂
⑤  游离苷元易溶于水
【多选题】 中药大黄中所含的蒽醌类化合物主要有
①  大黄素
②  大黄酸
③  大黄酚
④  大黄素甲醚
⑤  番泻叶苷A
【多选题】 酸性染料比色法测定中药制剂中总生物碱的含量,常用的染料有
①  甲基红
②  甲基橙
③  BTB
④  溴甲酚绿
⑤  雷氏盐
【多选题】 中药中的有机酸按结构可分为
①  脂肪族有机酸
②  芳香族有机酸
③  脂环族有机酸
④  萜类有机酸
⑤  有机酸盐
【多选题】 醌类成分在中药中的存在状态可分为
①  氧化型
②  还原型
③  游离型
④  结合型
⑤  挥发型
【多选题】 含三萜皂苷类中药制剂在制备样品时,常用的净化方法有
①  萃取法
②  氧化提取法
③  还原提取法
④  水解法
⑤  色谱柱法