There are just as many protons in the nucleus as electrons______ around it.
A. revolving
B. spinning
C. rotating
D. spiraling
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The______ of the bank where he worked was not in the centre of the city.
A. branch
B. settlement
C. successor
D. mansion
烤瓷熔附金属全冠属于
A. 金属全冠
B. 非金属全冠
C. 混合全冠
D. 核冠
E. 桩冠
How did summers react to the faculty's humiliation
A. He showed his distinguished abilities and intentions to them.
B. He has defended and yielded in their game.
C. He tried to grasp, any opportunity to prove his innocence
D. He was full of fear toward those feminists and the left.
男性，17岁。诉牙齿出血、咀嚼无力1个月余。口腔检查：切牙和第一磨牙松动 Ⅰ度，切牙唇侧移位，牙周袋5～6mm，第一磨牙牙周袋6mm，菌斑指数和牙龈指数1，探诊牙龈出血。初步诊断为
A. 成人牙周炎
B. 青少年牙周炎
C. 快速进展性牙周炎
D. 青春期龈炎
E. 青春前期牙周炎
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