问题
单项选择题
全冠修复体采用龈上边缘的最主要优点是()
A.不易附着菌斑
B.美观性好
C.边缘密合
D.对龈刺激小
E.不易附着牙垢
答案
参考答案:D
全冠修复体采用龈上边缘的最主要优点是()
A.不易附着菌斑
B.美观性好
C.边缘密合
D.对龈刺激小
E.不易附着牙垢
参考答案:D
It was a Sunday afternoon. It was very ____and nobody wanted to stay at home. Mike decided to go swimming in the river. His brother,Jim.wanted to go with him. “ _______him with you, Mike” said their father.” he will do what you say, I think.” They got ____the river quickly. A lot of people were ___in it. Mike told Jim to play in the bank,then he ____into the river. About an hour later, Mike swam to the bank with a fish in his hand. Jim was very _____. He found a bottle and put the fish in it. Jim did____except(除了) watching the fish that evening. Suddenly Mike heard Jim ____in the room. He ran to him and asked,” what’s wrong ____you, Jim?” “ The fish has died,” Jim said “I thought it was ______. So I took it out of the bottle and put it on the chair, I only wanted it to have a rest.”
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