问题
选择题
列关于糖类的说法错误的是[ ]
A．果糖与葡萄糖都是单糖且是同分异构体
B．蔗糖、麦芽糖和纤维二糖都是二糖且是同分异构体
C．淀粉和纤维素的组成都可以用式子(C6H10O5)n来表示且是同分异构体
D．麦芽糖、纤维素、淀粉的最终水解产物都是葡萄糖
答案
答案：C
搜题请搜索小程序“爱下问搜题”
列关于糖类的说法错误的是[ ]
A．果糖与葡萄糖都是单糖且是同分异构体
B．蔗糖、麦芽糖和纤维二糖都是二糖且是同分异构体
C．淀粉和纤维素的组成都可以用式子(C6H10O5)n来表示且是同分异构体
D．麦芽糖、纤维素、淀粉的最终水解产物都是葡萄糖
答案：C
A Stress (压力) is everywhere in our everyday life. Men, women, the young and the old sometimes have stress. The most important reasons of stress are: death, diseases, exams, making money, changing jobs, ending friendships and so on. How do you know whether you have stress? Could you give your answers to the following questions?
Doing relaxing exercise, talking with friends and listening to light music are all usual ways relieving (减轻) stress. However, doctors now say that there are easier ways — people should laugh and smile more often. When you laugh and smile, your body relaxes. They also say that people, especially men, should cry more often, because crying is the natural way of relieving stress. 小题1:Which of the followings is NOT one of the most important reasons of stress according to the passage?
|