已知A~F是中学化学中常见物质,其中A、C、E、F为气体,B、D为液体,D的消费

题型:推断题

问题:

已知A~F是中学化学中常见物质,其中A、C、E、F为气体,B、D为液体,D的消费量常作为一个国家工业发达水平的一种标志,F的浓溶液与X共热通常用于实验室制备单质C,X是一种黑色粉末,B分子中有18个电子。反应中部分生成物已略去。

试回答下列:

(1)根据图中信息,B、C、D、X氧化性从强到弱的顺序是____________________。

(2)B的电子式为:____________________。

(3)写出反应②的化学方程式:________________________________________。

(4)写出反应①、⑥的离子方程式

①_________________________________________________ ;

⑥__________________________________________________。

考点:无机推断氧化性、还原性强弱的比较单质铜氯气二氧化硫
题型:推断题

我国外汇的作用主要是国际贸易中的______

A.价值尺度、中介手段
B.信用手段、支付手段
C.储备手段、支付手段
D.价值尺度、信用手段

题型:推断题

While I was having dinner with a well-known author and lecturer, our conversation drifted to money. “I have enough money,” he told me casually. “I don’t need any more money.”

“Of course you can say that,” I thought to myself. “You get fifteen thousand dollars for a lecture.”

Then I caught my thought process, and pondered(仔细考虑)more deeply on his statement. Is he satisfied because he has a lot of money, or does he have a lot of money because he chooses to be satisfied?

I know people with more money than this man, and they still don’t have enough. And I know people with very little money, and they always have enough. So is enoughness something that happens to us when we reach a certain level, or is it an experience we can choose and celebrate at any time?

My friends Adrian and Carey live in a humble cottage in the rainforest. They have quite a modest income, no telephone, and they walk around naked most of the time. I think they are the happiest people I know. They wake up with the sun, love each other very much, and welcome guests with a full and open heart. They appreciate every moment of their lives, have no distraction games going, and are not waiting for the big break around the corner. When I am with them, the predominant(主要的)feeling I have is, “It’s all right here—why would anyone want anything more?”

Ram Dass used to say, “There are three kinds of people in the world: those who say, ‘Too much!’; those who say, ‘Not enough!’; and those who say, “Ah, just right!’”; Since “too much” of one thing implies “not enough” of another, there are really only two approaches to life: lack or contentment.

小题1:From the first paragraph, we can infer that the lecturer ___________.

A.was living a happy life

B.was careless about his money

C.was satisfied with his life

D.was rich enough to live a happy life小题2:We learn from the underlined part that ____________.

A.it’s money that is of importance

B.it’s not money but the attitude that matters

C.we don’t have to have much money

D.we won’t have enough money in life小题3:What does the author think of Adrian and Carey’s life?

A.They have no guests.

B.They have all they want.

C.They live a very hard life.

D.They live a very happy life.小题4:According to the last paragraph, people have two different attitudes towards life: ____________.

A.not enough or too much

B.lack or too much

C.lack or contentment

D.just right or enough小题5:Which of the following best suits the passage?

A.Nothing is better than a contented mind.

B.Where there is a will, there is a way.

C.Practice makes perfect.

D.Better late than never.

题型:推断题

我国现有和布克塞尔、肃北、河南、阜新、喀喇沁左翼、前郭尔罗斯、杜尔伯特等()个蒙古族自治县。

题型:推断题

下面是关于目前PC机中PCI总线的叙述,其中正确的是( )。

A.PCI总线与CPU直接相连
B.PCI总线通过超级FO芯片与CPU相连
C.PCI总线的地址与数据线是复用的
D.PCI总线不支持即插即用功能

题型:推断题

应做的辅助检查为

A.CT

B.MRI

C.眼底荧光血管造影

D.眼A超

E.超声生物显微镜

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