试题与答案

某溶液中含有AgNO3、Cu(NO3)2、Fe(NO3)2三种溶质,课外活动小组

题型:填空题

题目:

某溶液中含有AgNO3、Cu(NO32、Fe(NO32三种溶质,课外活动小组的同学将溶液分为A、B两份,分别进行如下实验:

(1)

,则滤渣A中一定含有的物质是______;

(2)溶液→滤液B→有红色固体析出,则滤液B中一定含有的溶质是______.

答案:

(1)在根据金属活动性顺序可以知道:Zn>Fe>Cu>Ag,所以将锌放入AgNO3、Cu(NO32、Fe(NO32三种溶液中,锌可以将铁、铜和银给置换出来,根据题干中所给的信息可以知道,最后将滤渣放入稀盐酸中产生了气体,说明在滤渣中一定含有铁,可能含有锌,从而可以判断在滤渣A中一定含有的物质为铁、铜和银;

(2)根据题意可知道,滤液B中有红色固体析出,结合题干信息可以知道该红色物质为铜,从而可以判断在滤液B中含有硝酸铜,结合金属活动性顺序及其应用可以知道在滤液B中含有硝酸铜,而在金属和多种金属化合物的溶液反应时总是把最不活泼的金属最先置换出来,所以可以知道在滤液B中含有的溶质为:硝酸亚铁和硝酸铜,由于银的活动性最弱,所以既然有铜析出,所以溶液中就一定不含有硝酸银.

故答案为:(1)Fe、Cu、Ag;

(2)Fe(N032、Cu(NO32

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题型:阅读理解

One fine day, an old couple around the age of 70, walks into a lawyer's office. Apparently, they are there to file a divorce(离婚). Lawyer was very puzzled. After having a chat with them, he got their story.

This couple had been quarreling all their 40 years of marriage. Nothing ever seems to go right.

They hang on because of their children, afraid that it might affect their up-bringing. Now, all their children have already grown up, and have their own family. There's nothing else the old couple have to worry about. All they wanted is to lead their own life free from all these years of unhappiness from their marriage, so both agree on a divorce.

While they were signing the papers, the wife told the husband. “I really love you, but I really can't carry on any more, I'm sorry.”

"It's OK, I understand." said the husband.

Little did she know that, over the years, the husband has been trying all ways to please her. Little did she know that drumsticks were the husband's favorite.

Little did he know that she never thought he understands her at all. Little did he know that she hates drumsticks even though all he wants is the best for her.

That night, both of them couldn't sleep, toss and turn, toss and turn. After hours, the old man couldn't take it any more. He knows that he still loves her, and he can't carry on life without her. He wants her back. He wants to tell her he is sorry. He wants to tell her, "I love you."

He picked up the phone, started dialing her number. Ringing never stops. He never stops dialing.

On the other side, she was sad. She couldn't understand how come after all these years. He still doesn't understand her at all. She loves him a lot, but she just can't take it any more. Phone's ringing, she refuses to answer knowing that it's him. "I want to keep it this way, if not I will lose face. "She thought. Phone is still ringing. She has decided to pull out the cord(线).

Little did she remember he had heart problems.

The next day, she received news that he had passed away. She rushed down to his apartment, saw his body, lying on the couch still holding on to the phone. He had a heart attack when he was still trying to get through (接通) her phone line.

小题1:The old couple wanted to file a divorce because __________.

A.they had no child.

B.their children didn’t like them.

C.they didn’t understand each other actually.

D.the old man didn’t love the old woman.小题2:Why didn’t they file a divorce before they were at the age of 70?

A.Because they were loving each other then.

B.Because they had no time to lawyer’s office.

C.Because they wanted to make their divorce open.

D.Because they didn’t wish to affect their children’s up-bringing.小题3:According to the passage we can know that ______.

A.the old man still loved his wife really.

B.the wife didn’t love her husband at all.

C.their children still lived with old couple.

D.they were in harmony over 40 years.小题4:After the last paragraph the old woman would be _______.

A.wild with joy

B.wild with grief(悲伤)

C.unconcern about it

D.angry at that

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