以下提供若干个案例，每个案例下设若干个考题。请根据答案所提供的信息，在每道题下面的A、B、C、D、E五个备选答案中选择一个最佳答案。
| 患者女，28岁，5天前因左上第二磨牙食甜物痛，曾直接做银汞充填。充填后觉冷热刺痛，并无自发痛。查：充填物完好，叩痛(-)，冷测引起一过性痛 |
该患牙的处理首选
A．行脱敏治疗
B．做安抚治疗
C．做牙髓治疗
D．垫底后充填
E．改材料充填
参考答案：B
| 完形填空。 | |||
| When July comes, children know they'll have 1 examinations and the school year will end soon. Boys and girls will have a nearly two months' holiday, and they'll leave school 2 train or by car to 3 to see their fathers and mothers . The summer holidays are the 4 time of the year for most children. The weather is usually good, so one can 5 most of his time playing outside. If one lives in the country, he can 6 into the woods and in the fields. If one lives in a big town, he can usually go to a park to play. The best place for a summer holiday is the 7 . Some children are 8 enough to live near the sea. But for the others who do not, if they have the chance to stay at one of the big seaside towns for a week or two, they will talk about it all the following school year. Now, 9 makes children like the seaside so much? I think it is the sand, the sea and the sun, not anything else. Of course, there are 10 new things to see, nice things to eat, and interesting things to do. But the feeling of sand under their feet, of salt water on their skin, and the feeling of the warm sun on their backs make them happier. | |||
| ( ) 1. A. they ( ) 2. A. on ( ) 3. A. go to town ( ) 4. A. best ( ) 5. A. take ( ) 6. A. go out ( ) 7. A. village ( ) 8. A. lucky ( ) 9. A. that ( ) 10. A. little | B. them B. by B. go to the parks B. better B. use B. go on B. seaside B. sad B. which B. much | C. theirs C. in C. leave home C. worst C. spend C. go back C. city C. worried C. who C. lots of | D. their D. at D. return home D. worse D. waste D. go away D. park D. quiet D. what D. no |