问题
单项选择题
未经磨耗的年轻恒磨牙，牙合面沟嵴清晰，备洞时不易确定洞型的边缘，此时的龋病治疗，最理想的方法是
A．银汞充填+窝沟封闭
B．复合树脂充填十窝沟封闭
C．再矿化治疗+窝沟封闭
D．再矿化治疗+银汞充填
E．再矿化治疗+复合树脂充填
答案
参考答案：B
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未经磨耗的年轻恒磨牙，牙合面沟嵴清晰，备洞时不易确定洞型的边缘，此时的龋病治疗，最理想的方法是
A．银汞充填+窝沟封闭
B．复合树脂充填十窝沟封闭
C．再矿化治疗+窝沟封闭
D．再矿化治疗+银汞充填
E．再矿化治疗+复合树脂充填
参考答案：B
A black car rushed around the busy street corner, towards the courthouse. The dark window rolled down and a semi-automatic stuck out. Pauly Gillespie, a government protected witness (目击者), stood , seeing death walking toward him. Pauly’s FBI bodyguards themselves on top of him, but two were fired and Pauly was hit the shoulder. The car across two lanes (车道) of traffic. Then it turned left down a path and got __ behind a large truck. The two men in the car out and raced away --- into the arms of four policemen. Special agent (特工) Brown was new to the police unit and was told to __ the car out of the path so that the traffic could return to . Brown changed the position of the rearview (后视) mirror _ and drove it around to __ his boss was questioning the two men. Brown stood and watched. One of the men was tall and thin, and _ was five inches shorter, about Brown’s . Agent Fordney asked the two men who had done the shooting. They __ to tell him. Then Brown smiled and said, “I know who the shooter was.” His boss was surprised. How could Brown know that without getting any answer from the two men? When Brown got into the car, he had to adjust the rearview mirror. That meant the previous driver had been of a height. Since the shorter man was close to Brown’s height, he knew the taller man must have been the _. Therefore, the shorter man had done the .
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