These days, many students like playing 3D games. Do you know what 3D games are like? In most 3D games, game players need to control (控制) a character. The character can be a robot or a soldier (士兵). Game players usually use the mouse to make the character move around in his own world. Game players can find things such as food and weapons (武器) to help them go on with the game. The character can go straight, sit down, turn left, turn right or pick up things in the game.
Some 3D games have many levels (等级). The character needs to finish different goals for each level.Game players can play against their computers, and sometimes they can play with other players on-line. It's great fun to play 3D games. But playing 3D games for long is not good for our study.
小题1:In most3D games, game players need to _________.
A．control a character
B．find a robot
C．act as a soldier
D．control the computer小题2:How do game players make the character move around?
A．By using the keyboard
B．By using the mouse
C．By telling the directions
D．By moving the computer.小题3:In the game, the character can _________.
A．go straight and sit down
B．turn left and turn right
C．Pick up things
D．A, B and C小题4:Which of the following is NOT true according to the passage?
A．Some 3D games have many levels.
B．The character needs to finish different goals for each level.
C．Game players can only play against their computers.
D．Game players can go on-line and play with other players together.小题5:What is the writer's opinion (观点)？
A．He doesn't think it's very interesting to play 3D games.
B．He thinks playing 3D games is really boring.
C．He thinks all the students should learn to play 3D games.
D．He thinks playing 3D games for long is not good for our study.
（2）
（3）2.0×10-2m
＝2.96×107m/s（2分）
=
，
，
，
，联立以上各式代入数据得：
＝4.44×10-16J（3分）
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