问题 单项选择题

有良好口腔卫生,妊娠期牙龈炎

A.也会发生,因激素水平的变化,软组织易发炎

B.也会发生,因妊娠期进食量大、次数多,细菌易生长

C.不会发生,因细菌是牙龈炎的主要因素

D.不会发生,因孕妇生活规律、抵抗力强

E.不会发生,因妊娠期呕吐,唾液pH下降,细菌不易生存

答案

参考答案:C

解析:去除引起牙龈炎发生的菌斑始动因素,将会保持牙龈健康。

开放性试题

初一学习生活很快就结束了,你也一定遇到过困难、挫折,请你告诉老师:

① 学习方面主要遇到哪些困难、挫折:

                                                                                                                                                              

你采取的应对办法: 

                                                                                                                                                             

结果:

                                                                                                                                                             

② 交往方面的困难、挫折:

                                                                                                                                                              

你采取的应对办法: 

                                                                                                                                                             

结果:

                                                                                                                                                              

单项选择题