重型病毒性肝炎时，肝细胞广泛发生 A．凝固性坏死 B．干酪样坏死 C．液化性坏 D．

有机化学反应因反应条件不同，可生成不同的有机产品。例如：

（2）苯的同系物与卤素单质混合，若在光照条件下，侧链上氢原子被卤素原子取代；若在催化剂作用下，苯环上的氢原子被卤素原子取代。工业上利用上述信息，按下列路线合成结构简式为的物质，该物质是一种香料。

请根据上述路线，回答下列问题：

小题1:A可能的结构简式为  __________________________________。

小题2:反应③、⑤的反应类型分别为________、______。

小题3:反应④的化学方程式为（有机物写结构简式，并注明反应条件）： ___________。

小题4:反应⑥的化学方程式为（有机物写结构简式，并注明反应条件）： __________。

小题5:这种香料具有多种同分异构体，其中某些物质有下列特征：①其水溶液遇FeCl₃溶液呈紫色 ②分子中有苯环，且苯环上的一溴代物有两种。③分子中有一个甲基，写出符合上述条件的物质可能的结构简式（写两种）：                     ，                   

已向海关办理了报关注册登记的企业，在接受加工贸易经营单位的委托开展加工贸易生产时，该企业为报关单位。 ( )

B

Whether rich or poor, we all have problems: that unfaithful mate, that annoying colleague, that persistent(持久的) disease, and the investment that is turning into a huge loss.

How can we remain calm, positive and even elegant in the face of all these difficulties of

life?

The following suggestions may help.

It comes with the pay. I have a friend who used to complain about her dead-end job and

unreasonable boss. Sounds familiar? One day I told her, "Look at it this way. You are getting

paid for the annoyance as well as the work. It comes with the pay. "

This has become my favorite saying for work-related frustrations. "Take every day as a bo-

nus. " When we learn to treasure every moment of what we have, we begin to see life in a whole

new attitude.

It's all in the mind. Sure, the psychologists tell us it is important that we work at resol-

ving problems. But they also say if you try to resolve a problem that would not go away, it would

only compound(使更复杂) the frustration.

If you tell yourself there isn' t a problem, there won' t be one. It is all in the mind.

Stop thinking about your own problem-help others instead. A lady who is struggling a

life-threatening disease showed she coped with her illness by making herself useful, by offering

help to others in a similar situation.

She has spoken to at least five other women with breast cancer. She says that the sharing

has helped her to find fresh meaning in her own life.

Never give up on your dream. Why do we give in or give up when we meet difficulities?

ls it because we have no confidenee in our cause and no commitment (承担义务)for what we

pursue?

One strong-hearted lady was the late head of the tragic Kennedy family, Rose Kennedy.

She said this on nationwide television one week after losing yet another son to assassin's( 暗杀者) bullet--Boddy Kennedy:"And we go on our way with no regrets not looking backwards to

the past, but we shall carry on with courage. "

Not the end of the world. Do you know something else? I' ve learned that care as you

might, love as,you might, some people don't care back.

And it is not the end of the world. After all, it's not the event that makes a person, is it?

It's what we do about what happens to us.

It was said that Albert Einstein' s last request on his death bed was to be given his equa-

tions(方程式) and his unfinished statement. Einstein first picked up his equations and lament-

ed(悲叹) to his son, "if only I had more mathematics!" What a great persistent spirit!

45. All of the followings are wrong EXCEPT_____.

A. some people have many problems while some have none

B. Albert Einstein pursued his dream till the last minute of his life

C. Rose Kennedy must be a timid (缺乏自信的) woman

D. we shouldn' t love those who don' t care about us

46. The passage is intended to inform the readers_____ .

A. how to face problems                       B. how to resolve problems

C. how to hold on to your dreams              D. how to help others

47. By saying "Take every day as a bonus", the author is trying to tell us __.

A. we should get a bonus every day     B. we should treasure every day in our life

C. we should make advances every day  D. we should enjoy ourselves every day

48. The last paragraph of the passage is out of place; it should be put under the subtitle of_____.

A. It comes with the pay                      B. It' s all in the mind

C. Never give up on your dream               D. Not the end of the world

声波在传播过程中遇到凹面障碍物时会发生( )。

A．声扩散

B．声反射

C．声聚焦

急性肾衰竭多尿期饮食治疗（）。

A.热量供给以碳水化合物为主

B.多选含钾丰富的蔬菜、瓜果

C.适量控制蛋白摄入

D.控制能量的摄入

E.控制钠盐的摄入