问题
单项选择题
官能团定量分析为了使反应完全经常采用（）
A、试剂过量和加入催化剂
B、试剂过量和产物移走
C、回流加热和加催化剂
D、产物移走和加热
答案
参考答案：B
搜题请搜索小程序“爱下问搜题”
官能团定量分析为了使反应完全经常采用（）
A、试剂过量和加入催化剂
B、试剂过量和产物移走
C、回流加热和加催化剂
D、产物移走和加热
参考答案：B
I am a lovely and happy boy. I my parents, teachers, friends and classmates, and I also love my city and the world, I love life. But sometimes I am . I want to do everything well. I want to be a good boy. I want everyone to love me. If I do something , I’ll feel unhappy, I’ll think I am good for nothing and I’ll be upset(失望) some time. Then the persons who love me tell me: “ You can’t do all things better than anyone else. You can’t do all things . You have to who you are. You have to decide what comes first, and then do that.” “You’ll have to learn to accept yourself. You’ll have to live with your limitations(局限). You are just . You’re wonderful. It’s your duty to be who you are.” It’s true that I can’t do very well, but I’ll try my best. Then I’ll become myself-a lovely boy. So my world will become beautiful, full of happiness.
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