一架数字相机，一次可以连续拍摄65536色的640×480的彩色相片50张，如不进行

阅读理解。

     The Great Fire of London started in the very early hours of September 2,1666. In four days it destroyed

more than three quarters of the old city, where most of those houses were built out of wood and close

together. One hundred thousand people became homeless but only few lost their lives. The fire started on

Sunday morning. By eight o'clock three hundred houses were on fire. On Monday nearly a kilometer of the

city was burning along the River Thames. Tuesday was the worst day. The fire destroyed many well-known

buildings. The fire stopped only when the king finally ordered people to destroy hundreds of buildings in the

path (路线) of the fire. With nothing left to burn, the fire became weak and finally died out.

1. What day die the Great Fire happen in London?

A. Sunday.

B. Monday.

C. Tuesday.

D. Wednesday.

2. The Great Fire of London destroyed more than _______ of the old city.

A. 25 percent

B. 30 percent

C. half

D. 75 percent

3. What were most of the houses made of?

A. Plastic.

B. Wood.

C. Stones.

D. Bricks.

4. Finally, the fire was out because there wasn't _______ left to burn it _______.

A. nothing, the fire

B. anything, the city

C. anything, the path of the fire

D. something, the streets

5. How long did the fire last?

A. Two days.

B. Three days.

C. More than four days.

D. Half a month.

某饮料的主要成分为：脂肪、鸡蛋蛋白粉、钙等．该饮品不能为人体补充的营养素是（　　）

A．油脂

B．维生素

C．无机盐

D．蛋白质

某烷烃的各种同分异构体中，主链上有4个碳原子的只有两种结构，则含相同碳原子数且主链上也有4个碳原子的烯烃（只含一个碳碳双键）的同分异构体有（不考虑顺反异构）                                              

A．2种

B．3种

C．4种

D．5种．

煤炭、砂石等大宗物资的清查适用实地盘存法。（）

专项治理的作用有哪些？