什么叫电动机左手定则？

造成企业在用人、用工上的多元状态的主要原因，还是因为企业管理行政化，也就是一些企业的自主权并没有真正落实。目前，企业改革正在向纵深推进，企业自主权涉及的问题越来越复杂，如果这样一些有关企业增效的问题都解决不了，非要用一些旧有陈规束缚企业的手脚，甚至逼他们不得不搞歪门邪道，企业改革将如何深化 这段话主要支持这样一个论点，即( )。

A．企业的自主权没有真正的落实，企业就很难放开手脚解决一系列复杂的问题

B．企业管理行政化导致了企业在用人、用工上的多元状态

C．企业在向纵深推进过程中，往往被陈规束缚手脚

D．不解决一些实质性的问题，企业改革将无法进行

小红同学在化学实验课上建议，用碘水可将淀粉溶液与食盐溶液区别开来，这个环节属于科学探究中的[ ]

A.提出假设

B.交流评价

C.设计实验

D.作出结论

Today most Chinese teenagers are happy to be favored by two parents and four grandparents in their families. But have you ever thought about how to take care of four to twelve old people when you grow up and get married? This could be a problem for most Chinese youths as China is entering a new stage of an aging society.

An aging society refers to one where 10 percent or more of its population is over 60. By the end of 2007, Chinese over 60 years old have made up 11.7 percent of the nation’s total population. “China is getting old before becoming rich,”said Cai Chuang, a professor at the Chinese Academy of Social Sciences. The population increase that has powered Chinese growth for three decades will give way over the next ten years to a rapid aging of the society. This will lead to weaker economic growth, because of a lack of labor resources.

As a result of the family planning policy, it is expected that the country’s total working population will decrease after 2015.

China is not the only country getting old. More that 60 countries have become aging societies and one in three people in the European Union is a senior citizen.

However, experts said that China doesn't have a highly developed social security network to support the old. Social security is an insurance program protecting those in need, including the old, the disabled and others.

小题1:An aging society is a society that _________.       

A．less that 10% of its population is over 60

B．10% or more of its population is over 60

C．there are four old people in a family

D．most of its population is over 60小题2:If China enters an aging society, __________.     

A．there will not be enough labor resources

B．the family planning policy will be ended

C．everyone needs to take care of four to twelve old people

D．China will have a highly developed social security network小题3:What does Cai Chuang mean by saying“China is getting old before becoming rich.”?

A．China will be an aging society, then be a developed country.

B．China will be a rich country before being an aging society.

C．An aging society will affect Chinese economy development.

D．China will stop developing because of its aging problem.小题4:The passage mainly talks about         .

A．an aging society

B．Chinese social problem

C．family panning policy

D．aging problem in China

喜出望外xǐ chū wànɡ wài

寒热往来，以寒为主，宜重推（）

A.推三关

B.推脾经

C.分手阴阳阳池重推

D.分手阴阳阴池重推

E.和阴阳