患者因中龋一次银汞充填后冷热刺激痛，无自发痛。查：充填物完好_爱下问搜题

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问题单项选择题

患者因中龋一次银汞充填后冷热刺激痛，无自发痛。查：充填物完好，叩(-)，冷热测正常牙面时无痛，但测充填体处痛

最可能的原因是

A．备洞时刺激牙髓

B．充填时未垫底

C．流电作用

D．充填体恳突

E．充填体高点

答案

参考答案：B

听力题

bicycle, drive, If, do, careful, take, allow, against, slow, danger, speak, other

Recently a lot of people have been punished for speaking on their mobile phones while driving. 1______ on the phone requires concentration (集中，专心) and 2______ a driver’s attention from the road.
If you drive after you have consumed alcoholic (含酒精的) drinks, you are 3______ the law and risking your own life as well as the lives of 4______. If you are with someone else who has been drinking alcohol, even 5______they had just a glass of beer, do not allow them 6 _______.
There is a fact that driving too fast through city streets is very irresponsible (不负责任的) and 7_______. Our city streets are always busy with people, cars and 8______. Drivers have to take the responsibility to be 9_______ for people crossing the road, especially older people who walk 10______ and young children who do not look before stepping into the road.

判断题

海陆风是热力环流，夜间陆地温度比海洋低，下层空气由海洋吹向陆地。