单闭环比值调节系统中，当主流量不变而副流量由于受干扰发生变化时，副流量闭环系统相当于

操作者自身的感觉系统提供的感觉反馈是______。

We always want to prepare ourselves to the changes we may face when we go to a different country. Well, I have to say that for me, even after living in the US for one year and a half, I am still not used to the changes of weather, or how to manage my money well. There are many things that can give us culture shocks, but it is up to us whether to make it a big shock or a small one.

I know that changing schools was a big thing for me. It helped me to be stronger and open towards meeting new people.  Sometimes it feels like everybody is already in a group. This makes it harder for someone else to go in. But, it is not that hard. Actually many people know that you are from another country. They feel curious about your “history”, and would often think you are a different man.

Another thing that can produce a shock to me is the sudden change of weather. During the last couple of days, there was an ice-snow storm. It was the biggest in 15 years in the state of Missouri. It was raining ice, really, and you could hear sounds outside the window like little pieces of rocks hitting it, of course it was the ice. It started accumulating so heavily that the University had to close down for two days, and it got worse when it started snowing after the ice storm.

As international students, you may at times find something very difficult, but hey, anyone can beat and overcome it to make studying aboard an unforgettable experience.

小题1:The author has been in the US for          .

A．one year

B．one and a half years

C．two years

D．two and a half years小题2:Changing schools        .

A．was just a small thing for the author

B．made it harder for the author to go into new people’s group

C．helped the author to be stronger and open towards meeting new people

D．made all people think the author was a different man小题3:The underlined word “accumulating” means       in Chinese.

A．堆积

B．融化

C．结冰

D．移动小题4:Which of the following is NOT mentioned to be a shock for the author when he studied in the US?

A. The big changes of weather.  

B. B.Managing money.

C.Changing schools.           

D.Difference in language.

小题5:What is the main idea of this article?

A．We may often change school to get used to living in a different country.

B．The author exercised a lot during the ice-snow storm and became stronger.

C．Students form other countries are curious about American history.

D．Studying abroad is cool though there are difficulties.

—What do you plan to do for the homeless people?                    

—I want to ______ some clothes ______ them.           [ ]

A. provide; with      

B. provide; for           

C. give; with         

D. buy; to

近年来，我们推进了医疗、住房、教育、养老等一系列改革，人民群众总体上得到了实惠，但依然存在“看病难、购房难、上学难、就业难”等民生问题。这说明                                                           [ ]

①我国还处于社会主义初级阶段 

②我国现在达到的小康还是低水平、不全面、发展很不平衡的小康 

③改善民生是当前我国一切工作的中心 

④我们要坚持“以人为本”为核心的科学发展观

A．①②③       

B．①②④       

C．①③④       

D．②③④

小叶性肺炎的病变表现为（）

A.病变呈灶状，多见于两肺上叶

B.各病灶病变表现较一致

C.病灶的病变特点是以细支气管为中心的化脓性炎，肺组织可遭破坏

D.病灶多为以细支气管为中心的浆液性渗出

E.病变多累及一个大叶或一肺段