【简答题】胆汁的显色反应有 A.Legal反应 B.Pettenkofer反应(10%蔗糖加5滴浓硫酸),产生紫色 C.Keller-Kiliani反应 D.Gregory Pascoe反应(45%硫酸+0.3%糠醛)显蓝色 E.三氯化锑反应
【简答题】听句子,选择最佳答案。 A. In the afternoon. B. No,there isn't. C. Houston Rocket. D. That's a great idea. E. At Sun Theatre. 1.__ 2. __ 3.__ 4. __ 5. __ ?
【简答题】从方框中选择恰当的选项补全对话,有两项是多余的。 A. That's a good idea. B. Would you like to go to the theatre? C. Would you like to go there with me? D. Where is it? E. What day is it today? F. How many people are there? G....
【判断题】若有说明:int main(int argc, char**argv),则argc的值必须大于1。