问题
单项选择题
牙龈上皮萎缩，组织水肿，临床表现为
A．牙龈呈暗红色
B．牙龈质地松软
C．牙龈表面光亮，点彩消失
D．牙龈色粉红且致密
E．探诊出血，疼痛
答案
参考答案：C
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牙龈上皮萎缩，组织水肿，临床表现为
A．牙龈呈暗红色
B．牙龈质地松软
C．牙龈表面光亮，点彩消失
D．牙龈色粉红且致密
E．探诊出血，疼痛
参考答案：C
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| Everyone, rich or poor, can have happiness (幸福、快乐). You don't need to think too much about those who are 1 . Why? Because those who have big houses may often feel 2 and those who drive their cars to work may want to 3 on country roads in their free time. In fact, happiness is always around you. When you are 4 , -your friends will come to help and this will surely 5 you happy; when you study hard at your lessons, you will get good 6 and of course you will feel happy about it. When you are not 7 well, your parents will take good care of your 8 and you will be happy when you are well again. All these are your happiness. When you are poor, you also can say you are happy because you may have something else that money can't buy. When you 9 problems, say loudly that you are happy as you have more chances to challenge (挑战) yourself so that you can 10 in what you do and this may bring you happiness. Take every chance you get and you can be a happy and lucky person. | ||||
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