渗碳体网在光镜下观察时，相界（），尺寸厚度较小，色白亮。铁素体网在光镜下观察时，相界

老年人尽量参加集体活动和有益的社会交际活动的作用，不包括(　　)。

A．打破“作茧自缚”的自我封闭增长局面

B．在和人的交往中开阔眼界，了解学习他人的良好的性格

C．多参与活动，有兴趣爱好，人易乐观

D．多参与活动，累了身体健康受影响

根据短文内容及首字母提示, 补全空格内单词，请写出完整单词。

Amanda is an American filmmaker and actress. She came to China three years ago to study Performance at Beijing Film Academy. Last month, she m  51  to Japan to study Economics at the University of Tokyo. On June 10th, she r   52  to the USA. She chatted with her parents about the cultural d   53   between the two countries.

“The people in b  54  countries are very friendly to f   55 . But they have different cultures. For example, when I spoke Chinese in China, the people there always showed s  56 on their faces. But when I came to Japan, I found it was o   57  . Most local people there hoped I could talk with them in Japanese, t   58  I was not good at it,” she said.

Amanda thought this might have something to d  59  with the fact that the western group in Japan is o  60  than the one in China. They have stayed in Japan for a long time. And most of them speak Japanese well. But Westerners in China are still quite a new group. They’re usually treated as guests and tourists.

卫生法中的民事责任主要是( )

A．行政处罚

B．刑事处罚

C．损害责任

D．侵害自由权

E．财产责任

在进程创建时先赋予进程一个初始优先数，以后在进程运行过程中不断修改优先数，用这种方法设置的优先数称为 【6】 。

高速铁路站线采用有砟轨道时，到发线道床顶宽（）m，道床厚度0.35m。

A、3.1

B、3.4

C、3.5

D、3.6