马克思肯定人的本质“是一切社会关系的综合”，同时认为决定人的本质的主导方面，在于人的

Early this morning we were waiting eager at the school gate for two American guests．They were from an university in New York．All of them were going to give us a lecture．At half past seven，Mr.．Jackson，along by his assistant，arrived．As long as their car stopped，we all went up and said hello to them．Then followed our headmaster，they came to the lecture room in there they gave us a lecture on “American Culture”and another one on “American Senior High School”．They spoke slowly，clearly and loudly，so they could understand most of the lectures．The lectures had interested us a lot．Before that we had a free talk with them and many questions．

药品管理法规定，国家实行药品不良反应

A．监测制度

B．报告制度

C．审查制度

D．登记制度

E．备案制度

在一项膀胱癌与吸烟关系的前瞻性队列研究中，发现男性吸烟者膀胱癌发病率为48.0/10万，不吸烟者为25.4/10万。根据此资料：

归因危险度百分比（）

A.52.92%

B.47.08%

C.88.98%

D.43.04%

E.无法计算

复发性疱疹性口炎一般复发感染的部位是（）

A.舌背

B.舌腹面

C.软腭

D.口唇或接近口唇处

E.颊部

影响产品（或工程）质量的因素主要有（）。

A.人

B.材料

C.机械

D.人、机械、材料、机械、方法和环境