问题
选择题
| 2002年诺贝尔物理学奖中的一项，是奖励美国科学家贾科尼和日本科学家小柴晶俊发现了宇宙X射线源．X射线是一种高频电磁波，若X射线在真空中的波长为λ，以h表示普朗克常量，c表示真空的光速，以E和m分别表示X射线每个光子的能量和质量，则（ ） A．E= B．E= C．E= D．E= |
，m=0
，m=
，m=0
，m=
答案
答案：D
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| 2002年诺贝尔物理学奖中的一项，是奖励美国科学家贾科尼和日本科学家小柴晶俊发现了宇宙X射线源．X射线是一种高频电磁波，若X射线在真空中的波长为λ，以h表示普朗克常量，c表示真空的光速，以E和m分别表示X射线每个光子的能量和质量，则（ ） A．E= B．E= C．E= D．E= |
答案：D
阅读下面的材料，然后再表格中完成内容摘要，没空不超过三个单词。 I’m Victor. I’m in Xiangjiang Middle School. In my school we have five events(事件) every year. They’re the school trip, the basketball game, the English speech contest(比赛), the Music Festival and the School Day. The school trip is on the second day of March. Students can go on a picnic. We are very happy. The basketball game is May 15th. It’s boring. I don’t play basketball. But many students in our school like the basketball game. The English speech contest is on the twenty-first of September.It is an important event in our school. The Music Festival is October 19th. I will（将）play the piano in the festival. Of cause, the School Day is the most important（最重要的） day. It’s December 12th. On that day , the students’ and the teachers’ clothes are red.
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