KBr03是一种强氧化剂，在酸性溶液中与还原物质作用，其半反应为 . A: Br0 3 -+6H ++5e==1/2Br 2+3H 20 B: BrO 3 -+6H ++6e== Br -+3H 20 C: BrO 3+3H 20+6e== Br -+60H - D: BrO 3+6H ++e==Br - +3H 20

下列微粒中，不具氧化性的是（） A: F B: Cl C: BrO D: I

32. 在酸性溶液中 KBrO;与过量的 KI 反应，达到平衡时溶液中的 （)。 A: A.两电对BrO=/Br-与I2/2I的电位相等 B: B.反应产物I2与KBr的物质的量相等 C: C.溶液中已无BrO存在 D: D.反应中消耗的KBrO:的物质的量与产物Iz的物质的量之比为1:3

找出括号里读音不同的单词。 A: (th)ese B: (th)ey C: bro(th)er D: u>;.(th)ree

下列微粒中，不具氧化性的是( ) A: F₂ B: Cl^- C: BrO^- D: I₂

908.KBrO3是一种强氧化剂,在酸性溶液中与还原物质作用,其半反应为( )。 A: BrO3+6H+5e=1/2Br2+3H2O B: BrO-+6H++6e=Br-+3H2O C: BrO3 +3H2O+6e=Br- +60H D: BrO3-+6 H++e=Br- +3H2O

下列关于卤族单质在碱中歧化的叙述，错误的是 A: 常温下Cl2歧化为ClO3—和Cl— B: 常温下Br2歧化为BrO3—和Br— C: 常温下I2歧化为IO3—和I— D: 低温下Cl2歧化为ClO‑和Cl‑

II. Listening to the news reports, (10%) Both the news reports will be spoken twice.News 1 Question 11-12 will be based on news 1. ​​Why couldn’t Jafiar Bro have his metal rods removed? A: Because the surgery had failed. B: Because he did not want to have them removed. C: Because he could not afford it. D: Because he received financial help as a former college athlete.

II. Listening to the news report. (10%)Directions: In this section, you will hear two news reports followed by two or three questions each. News One​浏览器不支持音频​Why couldn't Jafiar Bro have his metal rods removed? A: Because the surgery had failed. B: Because he did not want to have them removed. C: Because he could not afford it. D: Because he received financial help as a former college athlete.

函数的定义域是/ananas/latex/p/1132315: (-∞, -3)∪(-3, +∞)|(-∞, -3)∪(-3, 3)∪(3, +∞)|(-∞, -3)∪(3, +∞)|(-∞, 3)∪(3, +∞)