五条线段长分别是1cm、2cm、3cm、4cm、5cm,以其中三条线段为边长,则

题型:填空题

问题:

五条线段长分别是1cm、2cm、3cm、4cm、5cm,以其中三条线段为边长,则可以组成______个三角形.

考点:三角形的三边关系
题型:填空题

确定包装方式和包装形态时,主要考虑()

A.保护功能

B.方便流通功能

C.促进销售功能

D.增值功能

题型:填空题

19世纪60至70年代,虎视眈眈地想争夺中国新疆的是[ ]

A、英国与俄国

B、美国与日本

C、德国与美国

D、法国与日本

题型:填空题

学校准备举行“青少年吸烟问题”的辩论会.请你做正方代表(正方的观点是:青少年不能吸烟).想一想,怎样才能让大家赞同你的观点?把你的论据写出来(至少3条).

题型:填空题

A few days ago I got a call from my old college friend whom I haven’t seen for a very long time. The topic, which was about all the good old times that we had changed to a touching story when he started talking about his father.  

His father’s declining health made him stay at the hospital. Because of his illness, his father suffered from insomnia (失眠) and often talked to himself. My friend, who had not been able to sleep for a few days as he had to keep watching his father’s condition, became irritated and told his father to keep silent and try to get some sleep. His father said that he really wanted to sleep well because he was very tired and told my friend to leave him alone in the hospital if he did not want to keep him company.  

After his father finished talking, he fell unconscious (失去知觉). My friend was very sorry for speaking the ill words towards his father. My friend, whom I knew as a tough person, cried as a baby on the other end of the telephone. He said that from that moment on, he prayed every day, asking God to let his father wake up from his coma. He promised himself that whatever words came out from his father’s mouth after he regained his consciousness, he would gladly take them. His only hope for God was to give him a chance to rectify his past mistake.  

Often, we complain when we have to accompany or watch over our parents for years, months, days, hours or even minutes. But do we realize that our parents keep us company and watch over us for as long as we (or they) live? From the day we were born to our adulthood, and even when deaths come to us, they are always at our side.

Imagine how sad our parents will be when they hear a seemingly innocent word of “no” come out from our mouths. We can make promises to ourselves that from now on there will be no more complaints that come out from our mouths when we have to watch over or accompany our parents. No more complaints come out from our mouths when we feel that our parents have treated us like little children. There are so many unlucky ones who have neither fathers nor mothers. They long to have the things that we most complain about, but never have them.

Actually, it takes only a second to think and light the lamp that will bring us to a place where peace is dwelling.

小题1:Which of the following word can be used to describe the writer’s friend?

A.Sad

B.Sorry

C.Regretful

D.Pitiful小题2:What does the underlined word “rectify” mean in Para. 3?

A.put…right

B.recite…by heart

C.realize

D.recognize小题3:What does the writer want to tell us in the passage?

A.Your parents will keep talking to themselves when they are old.

B.Be good to your parents when you still have the chance.

C.You will regret in your life if you don’t show your kindness to your parents.

D.It is not easy to take good care of sick old parents.

题型:填空题
如图所示为一磁流体发电机示意图,A、B是平行正对的金属板,等离子体(电离的气体,由自由电子和阳离子构成,整体呈电中性)从左侧进入,在t时间内有n个自由电子落在B板上,则关于R中的电流大小及方向判断正确的是(  )

A.I= ,从上向下

B.I= ,从上向下

C.I= ,从下向上

D.I= ,从下向上

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