半双工制在（）中常常采用A、移动电话通信系统 B、集群通信系统 C、无线寻呼系统

可供出售金融资产在发生减值时，可能涉及的会计科目有()

A.资产减值损失

B.资本公积——其他资本公积

C.可供出售金融资产——公允价值变动

D.公允价值变动损益

E.投资收益

动物与人类生活有着极为密切的关系，我们的______，______，______，______，都离不开动物．

甲从高h处以速度v₁平抛小球A，乙同时从地面以速度v₂竖直上抛小球B，在B尚未到达最高点之前，两球在空中相遇，则（　　）

A．两小球相遇时间t=

B．抛出前两小球的水平距离s=

C．相遇A球的速率v=

D．若v=

When I was an official of a school in Palo Alto, California, Polly Tyner, the president of our board, wrote a letter that was printed in the Palo Alto Times. Polly’s son, Jim, had great difficulty in school. He was classified as the educationally handicapped and required a great deal of patience on the part of his parents and teachers. But Jim was a happy kid with a great smile that lit up the room. His parents knew his difficulties, but they always tried to help him see his strengths so that he could walk with pride. Shortly after Jim finished high school, he was killed in a motorcycle accident. After his death, his mother submitted this letter to the newspaper.

“Today we buried our 20-year-old son. He was killed in a motorcycle accident on Friday night. How I wish I had known that the last time I had talked to him would be the last time. If I had only known that, I would have said to him, ‘Jim, I love you and I’m always so proud of you.’ I would have taken the time to count the many blessings he had brought to the lives of the people who loved him. I would have taken the time to appreciate his beautiful smile, his laughter, and his genuine love to other people.

“When I put all the good things on the scale and try to balance them with all the irritating (恼人的) things such as the radio that was always too loud, the haircut that wasn’t to our liking, the dirty socks under the bed, etc., I find that the irritations really don’t amount to much.

“I won’t get another chance to tell my son all that I would have wanted him to hear, but, other parents, do have a chance. Tell your young people what you would want them to hear as if it may be your last conversation. The last time I talked to Jim was the morning of the day when he died. He called me to say, ‘Hi, Mom! I just called to say I love you. You have to go to work now. Bye.’ That day, he gave me something to treasure forever. ”

If there is any purpose at all for Jim’s death, maybe it is to make others appreciate life more and to tell people, especially family members, that they should take the time to let each other know just how much they care. You may never have another chance. Do it today!

小题1:Who was Jim?

A．The child of the Tyners’.

B．The writer’s relative.

C．The president of a school board.

D．An official of a school.小题2: What’s the meaning of the underlined phrase “the educationally handicapped”?

A．The learning difficulty.

B．The physical problems.

C．The psychological problems.

D．The communication difficulty.小题3:According to the writer, which of the following about Jim is TRUE？

A．He was always sad about his school marks.

B．His parents always scolded him about his bad school marks.

C．His study needed more attention from his parents and teachers.

D．He was killed in a car accident.小题4:The purpose of Polly’s letter is to                .

A．memorize her son

B．teach parents to appreciate their children

C．teach children how to be good boys

D．give some advice on how to deal with children’s problems

简述管理层次与管理幅度的关系。在建立合理的行政组织结构时，特别应注意正确地处理好管理层次与管理幅度的关系。