题目

下列有关实验的操作、现象和结论完全正确的是( ) A . 向蔗糖溶液中滴加几滴稀H2SO4 ， 水浴加热几分钟，再加入银氨溶液继续水浴加热，若不能产生银镜，证明蔗糖没有水解 B . 向浓盐酸中加入蛋白质，蛋白质呈黄色，说明蛋白质发生了颜色反应 C . 将乙醇和浓H2SO4的混合物迅速升温至170℃，并将产生的气体通入溴水，溴水褪色证明有乙烯生成 D . 向少量苯酚稀溶液中加入过量浓溴水，产生白色沉淀，说明苯酚与浓溴水发生了反应第三部分：阅读理解（共20小题；每小题2分，满分40分）阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。Imagine life as a game in which you are playing some five balls in the air. You name them-work, family, health, friends and spirit, and you’re keeping all these balls in the air.You understand that work is a rubber ball. If you drop it, it will bounce back. But the other four balls are made of glass. If you drop one of these, it will be irrevocably (不可逆转地) scuffed (磨损), marked, damaged or even broken into pieces. They will never be the same. You must understand that and try for balance in your life. How?Don’t undermine (逐渐损害) your worth by comparing yourself with others. It is because we are different and each of us is special. Don’t set your goals by what other people consider important. Only you know what is the best for you. Don’t take for granted the things closest to your heart. Hold on to them as you would to life, for without them, it’s meaningless. Don’t let life slip through your fingers by living in the past or in the future. By living your life one day at a time, you live all the days of your life. Don’t run through life so fast that you forget not only where you’ve been, but also where you are going. Don’t use time or words carelessly. Life is not a race, but a journey to be enjoyed slowly each step of the way. Yesterday is history, tomorrow is a mystery, and today is a gift. That’s why we call it – the present. 56. What’s the best title of this passage? A. Today Is A Present    B. How to Live Your LifeC. Life Is A Game         D. Imagine Life as a game57. What does the underlined sentence mean?A. not only where you live , but also where you’re going to liveB. all over the worldC. not only what you have done, but what you are going to do as wellD. the places you have been to as well as the places you are going to58. Which of the following is NOT true? A. You should try your best to keep balance in your life.B. It’s unnecessary to compare yourself with others.C. Life is just like a race.D. Everyone has his own best points.