【简答题】an objective, a purpose g___l
【单选题】According to the text, what is the ultimate purpose of virtual reality in education?
A.
To give special students a chance to experience life in the outside world.
B.
To train teachers to work with students with special needs.
C.
To allow special students to learn life-skills in a safe environment.
D.
To prepare special students to transition into mainstream society.
【多选题】理想是否合理、进步与科学的判断标准是()
【单选题】What is the author's purpose of writing the passage?
A.
To justify the advantages of video games.
B.
To promote the popularity of video games.
C.
To contrast video games and traditional entertainment.
D.
To list interesting facts in the research of video games.
【简答题】根据分子轨道理论说明: (1) He 2 分子不存在; (2) N 2 分子很稳定,且具有反磁性; (3) O 2 - 具有顺磁性。
【简答题】根据分子轨道理论: ( 1 )写出 O 2 2+ 、 CO 、 NO + 、 O 2 2- 的分子轨道电子排布式; ( 2 )根据键级排列出稳定性大小顺序; ( 3 )推断分子或离子是顺磁性还是抗磁性。
【多选题】理想是否合理、进步与科学的判断标准是()
【多选题】理想是否合理、进步与科学的判断标准是( )
【简答题】用分子轨道理论判断的稳定性大小和磁性强弱。根据分子轨道理论判断各组物质中稳定性和磁性大小。 (1)NO+,NO,NO-; (2)O2+ ,O2,O2- ,O22- 。