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问题 选择题

关于日本的叙述，正确的是

A．是一个多民族的国家

B．地势低，多平原，耕地面积广

C．文化具有东西方兼容的特点

D．多火山、地震，属温带海洋性气候

答案

答案：C

日本的民族构成单一，大和民族占有绝对优势；日本地形以山地和丘陵为主，平原面积较小；日本位于太平洋板块与亚欧板块的交界处，多火山和地震，所处的气候类型为季风气候，只是具有海洋性的特征；日本位于东亚，其文化特色是东西方文化兼容。所以本题选择C选项。

考点定位：本题考查日本的主要岛屿、地震带、火山和城市；日本的自然地理特征；日本东西融合的文化。

单项选择题

It’s not easy to be an astronaut’s son. Everybody expects you to be special or perfect. I often wonder how my father ever had a son like me. I mean he’s so special and so good at everything he does. Even in middle school he was class president and captain of the football team.
Well, to be honest, I often dream about being some kind of hero or doing something special-like saving a child from a burning building or discovering a new star. I was daydreaming at school one morning when my teacher said there would be a Father’s Day writing competition for the whole school. "I hope we have a winner right here in my class. "
When I got home, I started to think about what to write. My father is an astronaut. No, I wouldn’t start like that. That was the way others saw him. How did I see my father Hmm.
I saw him sitting with me in the dark when I had a terrible dream. I remembered how he hugged me for hours when my dog Spotty was killed by a car. Yes, these were the things I was going to write. To me, he wasn’t just a world-famous astronaut. He was my dad.
My parents and I went to school Thursday night. There were so many people in the big hall! My dad looked at me, and I shrugged (耸肩).
The third prize was announced and it was not me. I was relieved (释然) and disappointed at the same time. The second prize was announced. It was me.
I went up to the stage and read what I had written, My Father’s Son. When I finished, the people stood up and cheered. I saw my father blowing his nose. Tears were running down my mother’s face. Dad cleared his throat and put his hand on my shoulder. "Son, this is the proudest moment of my life. "
It was the proudest moment of my life, too. Maybe I’ll never be a great hero or win a Nobel Prize, but it was enough just to be my father’s son.

What did the boy probably write in his composition ______

A. A lot of special things he had done.
B. The story of his father as an astronaut.
C. The unforgettable time he spent with his father.
D. The experiences his father had in middle school.
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单项选择题

　　在“基本粒子”的大家族中，有一种叫中微子。它那穿山过海，敢于与光速较量的神奇本领和不费吹灰之力穿过地球的拿手好戏，极大地触发了科学家们应用研究的灵感。于是，中微子通信的设想脱颖而出了。这是一种采用中微子束来代替电磁波传递信息的无线通信方式。它可以冲破电磁波通信不可逾越的水下和地下这两大禁区，实现全球无线通信；它保密性好，传递信息快，不受外界干扰，对人体无害。这些优点是其他通信方式无法比拟的。

　　中微子通信过程和微波通信相似。有发射和接收装置。通信时，发射端首先用高能质子加速器，将质子加速到几千亿电子伏特的能量，然后去轰击一块金属靶子。此时，靶子的背面就会产生许多“短命”的介子，这些介子一边运动，一边发生衰变，从而变成中微子和μ子。再让它们共同穿过钢板，这时μ子被钢板阻挡并衰变了，剩下的就是纯净的中微子束。然后，再用信号对它进行调制，接着通过磁场控制载有信息的中微子束，使之按人的旨意朝一定方向传向目标。

　　接收端是一个贮有近亿吨水的大水箱，箱内的光探测器星罗棋布。当发射来的中微子束在水中传过时，就会与原子核中的中子发生核反应而生成μ子，μ子在水中高速前进，受到核的减速作用放出光子，这些光子进而被水中的光探测器接收，即可把原来中微子束所携带的信息解调出来，从而达到通信的目的。

从原文意思来看，下列对中微子通信和电磁波通信所作的判断，正确的一项是（）。

A．它们的通信过程、传递路线和装置是基本相同的

B．中微子穿透力强，金属板对它也不会产生阻碍

C．中微子能冲破水下和地下两大禁区，是目前世界上最先进的应用通信方式

D．中微子通信和电磁波通信都是用光来传输信息的
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