问题 阅读理解
根据所给信息,将选项合理配对。(有一项多余)
( )1. Nancy likes ping-pong very much. She often watches ping-pong games on TV on Sundays. She
wants to play ping-pong. But she only has a ping-pong ball.
( )2. Mike is a music fan. He has a big music collection. He likes Jay Chou very much. He always listens to his songs.
( )3. My father is a teacher. He often reads books. Tomorrow is his birthday. I need a gift(礼物) for
him.
( )4. Oh, my god. I can't find my backpack. It's red and black. My math book and notebook are in it.
( )5. Lily is my new friend. She is a nice girl. She lets me go to meet her family and gives me her
telephone number. I need to write(写) it down.
A. A good book.
B. A ping-pong ball.
C. Some CDs.
D. A pen.
E. A ping-pong bat.
F. The lost and found.
答案

1-5 E C A F D

推断题

物质A有如下图所示转化关系,其中乙为金属单质,常温下,它在G 的浓溶液中发生钝化, F 的溶液中只含有一种溶质(有的反应可能在水溶液中进行,有的反应的生成物未全部给出,反应条件也未注明)。

请讨论以下两种情况(注:两种情况下各字母代表的物质可能不同) 回答下列问题:

(1)第一种情况:用两根玻璃棒分别蘸取 A、G的浓溶液并使它们接近时,有大量白烟生成;甲为焰色反应呈黄色的金属单质; D 和 F 的溶液均呈碱性。则:

①反应Ⅲ的化学方程式为_____________________。

②D与乙反应的离子方程式为_____________________。

(2)第二种情况: 甲由两种单质直接化合得到;B 为红棕色固体; C为无色气体,是形成酸雨的大气污染物之一;D 的水溶液加入用硝酸酸化的AgNO3溶液有白色沉淀生成。则:

①工业上,反应 I的化学方程式为______________________________________。

②D和乙反应的离子方程式为____________________________________     。

③ 请简述检验D溶液中阳离子的方法___________ 。

④ 若A的相对分子质量为120,反应Ⅰ、Ⅱ、Ⅲ均为完全转化。现取m克含A及少量杂质的样品,按上述过程充分反应后(杂质不参与反应),得到密度为ρg/cm3,溶质质量分数为a% 的G溶液n mL。则该样品中A的质量分数=_____________(列出计算式即可)。

单项选择题 A1/A2型题