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= |
答案
答案:D
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
阅读理解。 Menu |
HAMBURGERS | DRINKS |
Chicken Egg Fish Beef RICE Fried With meat With eggs With vegetables | $5.50 $3.40 $4.80 $6.20 $3.50 $5.70 $4.20 $3.90 | Orange juice Coke Coffee Tea DESSERTS Ice cream Apple pie Fruit Chocolate | $1.50 $3.00 $5.50 $2.00 $2.50 $4.50 $3.50 $6.00 |
1. Where do we often see a menu? |
[ ] |
A、In a hospital. B、In a restaurant. C、In a supermarket. D、In a school. |
2. I have only two dollars. What can I buy? |
[ ] |
A、Coke. B、Ice cream. C、Tea. D、Fruit. |
3. I want to eat a beef hamburger, a cup of coffee and an apple pie. How much should I pay? |
[ ] |
A、$ 15.20. B、$ 16.70. C、$ 16.20. D、$ 15.80. |
4. "Dessert" here means _______? |
[ ] |
A、沙漠 B、冷饮 C、热饮 D、甜点 |
5. The most expensive food in the above menu is _________. |
[ ] |
A、beef hamburger B、rice with meat C、coffee D、chocolate |