1 L含有HNO3、Fe(NO3)3、Cu(NO3)2三种溶质的溶液，三者的物质

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问题选择题

1 L含有HNO₃、Fe(NO₃)₃、Cu(NO₃)₂三种溶质的溶液，三者的物质的量浓度之比为4:1:1，慢慢向其中加入铁粉，以下图像正确的是（横坐标表示加入Fe的物质的量，单位：mol；纵坐标表示Fe²⁺的物质的量浓度，单位：mol/L） [ ]

答案

答案：A

情景交际

补全对话。根据对话内容，从对话后的选项中选出能填入空白处的最佳选项。选项中有两项为多余

选项。

— What's the matter with you, Tom?

— Oh, 1_____ Maybe I've got a cold.

— 2_____ Why don't you take some cold stop?

— 3_____

— That's what I took the last time I had a cold. 4_____ Maybe that'll help.

— Thanks. (Two days later)

— How are you feeling now?

— Getting better.

— 5_____

A. Does it work well?

B. Good idea.

C. Glad to hear it.

D. I feel a little bad under the weather now.

E. It worked pretty well.

F. It's very kind of you.

G. That's too bad.

单项选择题

对应予披露的风险因素应作定量分析，无法进行定量分析的，应当，（）。

A.定性描述

B.放弃披露

C.简单提及

D.单独列出进行说明