第22题: [单项选择]炔雌醇片含量测定的方法是 A. 酮肟的生成反应 B. 与间二硝基酚的反应 C. 硒 D. 氯化三苯四氮唑法 E. 异烟肼 参考答案:A
第23题: [填空题]I can’t invite you to dinner this week as I am having my house (paint) ______ at the moment. 参考答案:painted 答案解析:[解析] 本题考查的是词组have sth. done(让某人做……)的用法。如:John went to the town to have his computer repaired yesterd