美国人是享乐主义的典型。

5-羟色胺再摄取抑制剂产生戒断反应的原因是（）

A.脑内5-羟色胺受体数目减少

B.脑内5-羟色胺受体敏感性下调

C.脑内5-羟色胺受体敏感性增强

D.突触间隙中5-羟色胺浓度升高

E.脑内5-羟色胺受体数目增多

农业的依存条件是（）。

A、自然环境条件

B、社会文化

C、企业

D、教育

When we want to tell other people what we think, we can do it with the help of words. We can also do it in many other ways, too. Sometimes we move our heads up and down when we want to say "yes", and we shake our heads when we want to say "no " Some people can’t hear or speak. They talk with the help of gestures(手势). People from other countries often have to do it if they don’t know your language.
Here is a story. An American was once having his holiday in Italy, but he could not speak Italian. One day he went to a restaurant and sat down at a table. When the waiter came, the American opened his mouth, put his fingers in it and took them out again. In this way he wanted to say "Bring me something to eat". The waiter soon brought him a cup of tea. The American shook his head and the waiter understood that he didn’t want tea. So he took it away and brought him a glass of milk. The American shook his head again. He was very hungry now and looked sad. He was just going to leave the restaurant when another man came in. When this man saw the waiter, he put his hands on his stomach (胃). In a few minutes there was a large plate of bread and meat on the table in front of him.

If you can’t ______, you may talk with the help of gestures.

A．write and read

B．say or sing

C．hear and speak

D．go or come

改革开放以来，某省从业人员总量伴随经济增长而持续增加，城乡就业规模不断扩大，就业结构经过调整逐步合理，从业人员素质逐步提高，城镇登记失业率稳中有降，成功地解决了经济结构调整以及城市化进程中的就业问题。至2007年底，某省从业人员总量达到2015.33万人，比1978年底增加1090.92万人，年均增长2.7%，全省从业人员占全省总人口比重比1978年上升了18.5个百分点，达到56.3%，其中，全省城镇从业人员数673.26万人，比1978年增长了2.26倍。仅2001-2007年7年间就增加251.16万人，占1978年以来增加人数的53.8%。从2003年以来，城镇登记失业持续下降，2007年全省城镇登记失业率为3.9%，比2002年低0.3个百分点，比全国同期平均水平低0.1个百分点。人员素质显著提高，全省国有企事业单位专业技术人员从1978年的8.41万人增加到2007年的62.38万人。1982年至2007年，大专及以上文化程度的人口占总人口的比重从0.6%上升到4.8%，高中(含中专)人口所占比重从5.7%上升到12.0%，而文盲、半文盲人口比重从25.2%下降到10.0%。人员素质的提高，专业技术人员的增加，为全省经济建设奠定了良好的基础。

根据文中资料，不能得出的结论是( )。

A．近年来，该省失业人数持续下降，预计今后几年将进一步下降
B．2001-2007年7年间，该省城镇从业人数大幅度提高
C．改革开放30年以来，该省劳动就业成绩显著
D．改革开放30年以来，该省劳动人员素质显著提高，学历层次也明显提高

传播者以双方能理解的语言和能够接受的方式，使对方理解所传递的信息，体现了人际传播技巧中的（）

A.说话技巧

B.提问技巧

C.倾听技巧

D.反馈技巧

E.观察技巧