下列说法正确的是[ ] A．组织就是器官 B．心脏是器官 C．组织就是系统 D．

下列属于物理变化的是（　　）

A．冰雪融化

B．金属锈蚀

C．高炉炼铁

D．煤气燃烧

满足左心室肥厚的电压标准应是（）

A.R₁>1.2mV

B.R_aVF>0.5mV

C.R_aVF>1.5mV

D.R_V5+S_V1>4.0mV

E.R_V1+S_V5>1.2mV

Some people think that success is only for those with talent or those who grow up in the right family，and others believe that success mostly comes down to luck.I’m not going to say luck，talent，and circumstances don’t come into play because they do.Some people are born into the right family while others are born with great intelligence，and that’s just the reality of how life is.

However，to succeed in life，one first needs to set a goal and then gradually make it more practical.And，in addition to that，in order to get really good at something，one needs to spend at least 10,000 hours studying and practising.To become great at certain things，it’ll require even more time，time that most people won’t put in.

This is a big reason why many successful people advise you to do something you love.If you don’t enjoy what you do，it is going to feel like unbearable pain and will likely make you quit well before you ever become good at it.

When you see people exhibiting some great skills or having achieved great success，you know that they have put in a huge part of their life to get there at a huge cost.It’s sometimes easy to think they got lucky or they were born with some rare talent，but thinking that way does you no good，and there’s a huge chance that you’re wrong anyway.

Whatever you do，if you want to become great at it，you need to work day in and day out，almost to the point of addiction，and over a long period of time.If you’re not willing to put in the time and work，don’t expect to receive any rewards.Consistent，hard work won’t guarantee you the level of success you may want，but it will guarantee that you will become really good at whatever it is you put all that work into.

小题1:Paragraph 1 mainly talks about________.

A．the reasons for success

B．the meaning of success

C．the standards of success

D．the importance of success小题2:In Paragraph 2，the underlined word that refers to________.

A．being good at something

B．setting a practical goal

C．putting in more time

D．succeeding in life小题3:Successful people suggest doing what one loves because________.

A．work makes one feel pain

B．one tends to enjoy his work

C．one gives up his work easily

D．it takes a lot of time to succeed小题4:What can we infer from Paragraph  4?

A．Successful people like to show their great skills.

B．People sometimes succeed without luck or talent.

C．People need to achieve success at the cost of life.

D．It helps to think that luck or talent leads to success.小题5:What is the main theme of the passage?

A．Having a goal is vital to success.

B．Being good is different from being great.

C．One cannot succeed without time and practice.

D．Luck，talent and family help to achieve success.

物业服务成本的构成一般包括( )。 ①管理服务人员的工资、社会保险和按规定提取的福利等；②物业共用部位、共用设施设备的更新、改造费用；③物业管理区域清洁卫生费用；④办公费用；⑤物业管理区域秩序维护费用；⑥物业管理区的绿化养护费；⑦物业管理企业的酬金；⑧物业管理企业固定资产折旧费；⑨物业共用部位、共用设施设备及公众责任保险费用

A．①②③④⑤⑥⑧⑨

B．①②③⑤⑥⑦⑧

C．①②③④⑤⑥⑦⑨

D．①③④⑤⑥⑧⑨

高锰酸钾滴定法应在酸性中进行，从一开始就要快速滴定，因为高锰酸钾容易分解