在下列各句的空白处填入一个最恰当的单词，使句子意思完整，语法正确。

1.  I  prefer lemons because I like _______taste.

2.  Boys, stop _______stones at the poor dog.

3.  China is an           __ country with a long history.

4.  The rose was taken away but the smell __         .

5.  The factory can       ___  thousands of clothes every month.

6.  Tom's father is a good   ___      .  He can cook delicious food.

7.  Have you       ____that he wears a pair of very funny pants?

8.  I'm sorry I took your pen _______ mistake.

9.  We'll have an apple      ___  for dessert on Christmas Eve.

10.  We enjoyed ourselves in the park.  It was a _______afternoon.

患者，男，36岁。3个月前因外伤上前牙脱落。口腔检查：左上1缺失，间隙正常，牙槽嵴无明显吸收。右上1牙冠1/2缺损。已露髓，探稍敏感，叩诊阴性，无松动。左上2牙冠良好，叩诊阴性，无松动。上下前牙牙龈轻度红肿，易出血，可见菌斑及牙石。余牙未见异常。

右上1需要进行的治疗方案是（）

A.活髓切断术

B.根管治疗术

C.盖髓术

D.拔除术

E.以上都不是