题目

We will have two family parties this autumn. One is at Halloween and_______ is at          Thanksgiving.          A. other    B. the other   C. another    D. the others 答案：B检验HCl气体中是否混有少量Cl2可采用的方法是A．凭气味和颜色                             B．通入AgNO3溶液C．干燥的蓝色石蕊试纸，观察其颜色变化       D．湿润的碘化钾淀粉试纸是否变色