患者，女，30岁。右下后牙自发性疼痛2天，冷热刺激疼痛加剧，就诊检查可见：近中斜位阻
题型：单项选择题
问题：
患者，女，30岁。右下后牙自发性疼痛2天，冷热刺激疼痛加剧，就诊检查可见：
近中斜位阻生，冠周稍红肿，
远中颈部探及龋洞，探诊(++)，叩诊(+)。
对此患者最合适的应急处理为（）
A．3%过氧化氢溶液冲洗冠周上药
B．服消炎镇痛药
C．开髓引流
D．拔除
E．针刺止痛
题型：单项选择题
根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。
Most people buy a lot of gifts just before Christmas. But some people think we buy too much. They have started a special day called Buy Nothing Day. 小题1: .
Buy Nothing Day is November 29. It’s 25 days before Christmas. It’s after Thanksgiving and often the first day of Christmas shopping. 小题2: .
The idea for Buy Nothing Day started in Vancouver, British Columbia. 小题3: . In Califor
nia, parents and children get together to read stories, sing songs, and paint pictures. The children talk about why they don’t need a lot of toys. This year, in Manchester, England, people dressed up in costumes to tell people that we buy too much.
In Albuquerque, New Mexico, high school students.wanted to tell other students about Buy Nothing Day. They organized a spaghetti dinner to give people information about Buy Nothing Day. 小题4: . They made posters and talked to other students about it. 小题5: . The students at high 
schools liked the idea of this new tradition. Next year, they want to have another dinner to tell more people about Buy Nothing Day.
A．They asked restaurants in the neighborhood to donate the food.
B．At this time, we see ads in Newspapers and, on TV telling us to “ buy, buy, buy!”
C．Buy Nothing Day has successfully persuaded people not buy anything.
D．Many people think highly of the idea of Buy Nothing Day.E. They don’t want anyone to go shopping on that day.
F. Now people all over the world celebrate Buy Nothing Day.
G. The dinner was a big success, and many students agreed not to buy anything on November 29.