任务型阅读
You may hear about earthquakes, but do you know what to do before, during and after an earthquake? Here is some advice for you:
Before an earthquake
____All family members should know how to turn off gas, water and electricity and know useful telephone numbers (doctor, hospital, police, 119, etc.). Never put heavy things over beds.
During an earthquake
It's important for each of you to stay calm. If you are indoors, quickly move to a safe place in the room such as under a strong desk or a strong table.____ Stay away from windows, large mirrors, heavy furniture and so on. If you are cooking, turn off the gas.____ Move away from buildings, bridges and trees.
After an earthquake
____ It's better to wait and leave when it is safe.
Check around you and help the people who are in trouble. If your building is badly broken, you should leave it.____ If you can do it safely, turn off the gas. Then report it to the gas company.
A. It's necessary to prepare yourself and your family.
B. But earthquakes almost never kill people directly.
C. Earthquake is one of the most severe natural disasters.
D. The purpose is to protect yourself from falling objects.
E. If you arc outdoors, move to an open area like a playground.
F. Once the shaking has stopped, DO NOT run out of the building at once.
G. If you smell or hear a gas, get everyone outside and open windows and doors.
表示焦点在y轴上的椭圆，则k的取值范围是 （ ）
