小博士：我们在这几个月的学习里，接触到不少的疑问词，其中疑问代词占大多数。那么疑问代词有哪些？又有哪些用法呢？看看下面的总结吧！

　　1)疑问代词在句中起名词词组的作用，用来构成疑问句。疑问代词有下列几个：

　　指人：who，whom，whose

　　指物：what

　　既可指人又可指物：which

　　2)疑问代词在句中应位于谓语动词之前，没有数的变化，除who之外也没有格的变化。无论是做疑问代词还是限定词，which和what所指的范围都是不同的。what所指的范围是无限的，而which则指在一定的范围内，例如：

　　Which movies do you like best?

　　你喜欢哪几个部电影？

　　What movies do you like best?

　　你喜欢什么样的电影？

你明白了吗？那么就请选用刚才我讨论过的疑问词完成下面句型转换。

1　　My favorite subject is science.

________ ________ your favorite subject?

2　　He likes art best.

________ ________ he like best?

3　　My science teacher is Mr Green.

________ ________ your science teacher?

4　　He's really busy today.

________ ________ really busy today?

5　　Betty's backpack is in her bedroom.

________ backpack is here?

　　　　House price （价格）in England rose quickly between 1971 and 1972. The following records how much a house in Chelsea, London had risen in price since 1955.

　　　　Take No. 29 Smith Terrace for example. In 1955, Jane Grey sold it for ￡2,000. Mrs Bowena Black bought in next for ￡4,900 and sold it nine years later to Bill and Doreen White for￡22,950. Now, four years later, in 1972, the house was priced ￡30,000.

　　根据短文内容，选择最恰当的答案。

　　1. The price of the house was ______ as high in 1972 as in the year Jane Grey sold it.

[　　]　　　　　　　　　　　　

　　 A. about 10 times　　　　B. twice

　　 C. 150%　　　　　　　　　D. fifteen times

　　2. Mrs Bowena Black made a profit（利润）of ______.

[　　]

　　 A. ￡2,900　　　　B. ￡8,050　　　　C. ￡7,050　　　　D. ￡18,050

　　3. Jane Grey lived in No. 29 Smith Terrace ______.

[　　]

　　 A. for four years　　　　　　　B. for nine years

　　 C. between 1971 and 1972　　　 D. before 1955

　　4. When did Mrs Black buy the house? In ______.

[　　]

　　 A. 1971　　　　B. 1972　　　　C. 1968　　　　D. 1959

　　5. Of all the tenants（居住人）, who made most money? ______.

[　　]

　　 A. the Whites　　　　B. Jane Grey　　

　　 C. Mrs Black　　　　 D. Mr White