问题 选择题

FeCl3、CuCl2的混合溶液中加入铁粉,充分反应后仍有固体存在,则下列判断不正确的是

A 加入KSCN溶液变红色             B 溶液中一定含Fe2+

C 溶液中一定含Cu2+                 D剩余固体中一定含Cu

答案

AC

分阶段分析

①、当固体为铁、铜时,溶液中的Fe3+、Cu2+全部参加反应生成Fe2+和Cu,反应的反应方程式为:2FeCl3+Fe=3FeCl2

CuCl2+Fe=Cu+FeCl2

所以溶液中一定没有Fe3+、Cu2+,一定含有Fe2+

②当固体为铜时,溶液中一定没有Fe3+,Cu2+恰好全部参加反应或部分反应生成Fe2+和Cu,

所以溶液中一定没有Fe3+,可能含有Cu2+,一定含有Fe2+

A、溶液中一定不含Fe3+,所以加入KSCN溶液不变红色,故A错误.

B、通过以上分析知,溶液中一定含有Fe2+,故B正确.

C、通过以上分析知,溶液中可能含有Cu2+,故C错误.

D、通过以上分析知,剩余固体中一定含Cu,故D正确.

故选A、C.

单项选择题
阅读理解

阅读理解。

    Jane Austen, a famous English writer, was born in Steventon, Hampshire, on December 16, 1775,

and died on July 18,1817. She began writing early in life, although the prejudices(偏见)of her times

forced her to have her books published anonymously.(匿名).

      But Jane Austen is perhaps the best known and best loved of Bath's many famous local people and

visitors. She paid two long visits during the last five years of the eighteenth century and from 1801 to

1806, Bath was her home. Her deep knowledge of the city is fully seen in two of her novels, Northanger

Addey and Persuasion, which are largely set in Bath. The city is still very much as Jane Austen knew it,

keeping its streets and public buildings the well-ordered world that she described so well in her novels.

Now the pleasure of learning Jane Austen's Bath can be enhanced (增强)by visiting the Jane Austen

Center in Gay Street. Here, in a Georgian town house in the heart of the city, you can find out more

about Bath in Jane Austen's time and the importance of Bath in her life and work.

     The Center has been set up with the help and guidance of members of the Jane Austen Society. After

your visit to the Center, you can look round the attractive shop, which offers a huge collection of Jane

Austen related books, cards and many specially designed gifts. Jane Austen quizzes are offered to keep

the children busy.

     You can also have walking tours of Jane Austen's Bath, which is a great way to find out more about

Jane Austen and discover the wonderful Georgian city of Bath. The tour lasts about one and a half hours.

The experienced guides will take you to the places where Jane lived, walked and shopped.

1. Jane Austen paid two long visits to Bath__________ .

A. in her early twenties    

B. in her early teens

C. in her late twenties      

D. in her late teens

2. What can we learn about Bath from the passage? 

A. Bath has greatly changed since Jane Austen's death.

B. The city has changed as much as Jane Austen knew it.

C. Bath remains almost the same as in Jane Austen's time.

D. No changes have taken place in Bath since Austen's time.

3. The author writes this passage in order to _________.

A. attract readers to visit the city of bath

B. ask readers to buy Austen's books

C. tell readers about Jane Austen's experience

D. give a brief introduction to the Jane Austen Society

4. After you have visited the Center, you can get the following things EXCEPT________.

A. books about Austen and her family life

B. cards and gifts that have something to do with Austen

C. the quizzes written by Austen to keep the children busy

D. the books written by the other writers about Austen