问题 单项选择题

制备洞形时,感染的软化牙本质未去净,预防性扩展不够,易导致

A.意外露髓
B.充填体脱落
C.继发龋
D.乳牙内吸收
E.充填体过高

答案

参考答案:C

问答题

       第一次工业革命是世界科技和经济发展史上最重要的里程碑之一,用所学的有关“工业革命” 的知识,回答以下问题:

(1)工业革命最有影响的发明是什么?哪一位历史人物为此做出了杰出贡献?

                                                                                                                                                            

                                                                                                                                                            

(2)1851年英国举办第一届世界博览会,请举出两例在本届博览会上工业革命带给人类的“礼物”(机器产品)。

                                                                                                                                                             

                                                                                                                                                             

(3)你同意“环境污染也是工业革命带给人类的重要礼物”这一说法吗?为什么?

                                                                                                                                                             

                                                                                                                                                             

                                                                                                                                                              

判断题