(1) The price of gold fell to its lowest level in five years in trading early Monday? For a time, gold was selling at less than 1,100 dollars an ounce on Asian markets.

改写成疑问句：

1 How much money was an ounce of gold on Asian markets early Monday?

2 How much money was an ounce of gold selling on Asian markets early Monday?

3 How much money was an ounce of gold sold on Asian markets early Monday?

4 How much money was an ounce of gold selling at the lowest level on Asian markets early Monday?

5 What was the lowest price of an ounce of gold on Asian markets early Monday?

请问，以上哪个或哪些疑问句是正确的？

动词sell可以是及物动词，也可以是不及物动词。作为及物动词用时，主语是人，卖的的东西做宾语。如：He sold his house last week. 这是可以改为被动句：His house was sold last week. 作不及物动词用时，东西作主语，sell作谓语。通常有方式副词或价格作状语。如：The houses sell well in big cities.

既然是将陈述句改为疑问句，陈述句中的sell是不及物用法，疑问句也应该是不及物用法：标准的问句应该是：

At what price was gold selling on Asian markets early Monday?

如果改变句子结构，可以问：

How much/How many dollars was an ounce of gold on Asian markets early Monday?

第2、3、4句均用an ounce of gold作主语是不合适的。因为逻辑上并不是卖一盎司黄金，而是卖黄金。一盎司多少美元只是黄金的价格。

第五句应改为：

What was the lowest price of gold in five years on Asian markets?

根据逻辑，黄金的最低价是指五年来的最低价，而不是星期一的最低价。price的意思就是每单位多少钱，因此，国际上黄金的单位是盎司。既然提到price，就没有必要重复an ounce.

(2) Which statement is true?

 Which the statement is true?

第二句为错误。which和the都是中位限定词，中位限定词互相排斥。第二句可改为：

Which of the statements is true? 这时，which是代词，不再是限定词。