题目内容：

Fire fighting is a serous matter, knowing what to do during a fire can save people’s lives. It is important to know the ways you can use and show them to everyone else in the family, such as stairways and emergency exits, but not elevators.

From the lower floors of building, escape through windows is possible. Learn the best way to get out from a window with the least chance of serious injury.

The second floor window is usually not very high from the ground. An average person, hanging by the fingertips will have a drop of about 6 feet to the ground. It is about twice the height of an average man. Of course, it is safer to jump a short way down than to stay in a burning building.

Windows are also useful when you are waiting for help. Be sure to keep the door closed before opening the window. Otherwise, smoke and fire may be drawn into the room. Keep your head low at the window to be sure you get fresh air rather than smoke that may have leaked into the room.

On the second or third floor, the best windows for escape are those which open onto a roof. From the roof a person can drop to the ground more safely. Dropping onto cement might end in injury. Bushes and trees can help you to have a soft landing.

1.Which of the following should not be used when trying to escape from a fire?

A．Windows

B．Elevators

C．Fire exits

D．Stairways

2.How far from the ground is the second floor window?

A．about 12 feet	B．about 6 feet
C．about the height of an average man	D．nearly 10 feet

3.According to the passage, windows are ______ of escaping a fire?

A．the only way	B．the best way
C．safer than any other ways	D．one of the possible ways

4.The writer suggests that _______

A．breathing in smoke might be harmful	B．smoke will enter the room through an open window
C．fresh air can’t reach the second floor window
D．to keep you head low will help you to escape a fire

5.If you are on the second or third floor when a fire breaks out, you’d better _____

A．drop directly onto the ground	B．first drop onto a roof then onto the cement
C．drop from a roof window then onto bushes and trees
D．drop onto the cement rather than bushes and grass