某程序框图如图所示,则该程序运行后输出的值是(  )

从方框中选择恰当的句子补全对话。（其中有两个多余）
A: Hi, Mikc!
B: Hello!
A:____ 
B: Yes, but one thing annoyed me.
A: ____ 
B: On the bus, I saw a woman eating bananas and threw the banana skins out to the window.
A: ____ 
B: I told her what she did was not right.
A: You were right. Throwing the litter away will pollute the environment.
B: I Agree with you.
A: ____ 
B: She didn’t take my words at all.
A: No wonder(难怪) you are so angry.

“有容乃大”是唐朝超越前朝的特有文化气派．以下能体现唐朝“有容乃大”的是（　　）

①玄奘到天竺学习佛学

②吐蕃与唐朝“和同为一家”

③日本多次派出使者来唐朝学习

④马可•波罗来中国经商．

“a = 1”是“复数$a^2-1+(a+1)i$（$a\in R$，i为虚数单位）是纯虚数”的(    )

【提出问题】溶液中的溶质是什么物质？