问题 单项选择题 A1/A2型题

完全脱位的外伤牙再植时间应该控制在()

A.90分钟

B.100分钟

C.2小时

D.4小时

E.6小时

答案

参考答案:C

解析:一般情况下越早再植成功率越高。超过2小时的脱位牙由于感染和牙髓坏死,一般不太可能再植成功。

单项选择题
写作题

假如你是刘宁,本学期刚转学到另一个城市,不适应新环境,想给好朋友宋薇写一封邮件,要点如下:

1.询问近况,表达思念;

2.不习惯饮食和天气;

3.听课有困难;

4.没有朋友,感到孤独。

注意:

1.词数120左右。

2.可适当增加细节,以使行文连贯。

Dear Song Wei,

                                                                                 

                                                                                   

                                                                                 

                                                                                   

                                                                                   

                                                                                  

                                                                                   

                                                                                 

                                                                                  

                                                                                  

                                                                                   

Yours sincerely,

Liu Ning