Many earthquakes(地震) happen without warning, so it is important to know what to do wherever you are during an earthquake. Here are some top tipson how to stay safe in an earthquake.
♦ Keep a cool head. Worry may make bad decisions. Think about what you should do.  The first several seconds are important.
♦ If you are indoors during an earthquake, hide under a heavy desk and protect your head. Stay away from windows and anything that could fall on you.
♦ If you are in a crowded hall away from the door, don't rush to the exit. You will find too many people trying to get out at the same time. Instead, hide under a desk or a table. Do not get into a lift during an earthquake!
♦ Stay in a safe area until you are sure it's OK to leave. Some aftershocks( 余震) may follow an earthquake.  These are as dangerous as the earthquake.
♦ If you are at home and you smell gas, open a window and leave the building quickly.
♦ If you are outdoors, find a clear place away from buildings, trees, street lights and power
lines.
♦ If you are buried in debris (埋在废墟) , you may make noises by knocking at the rocks. Shouting will use up your energy.  You could be without help for up to 72 hours. Try to find some water and food.  These are important for you.
71. The underlined words "top tips" mean ______'
A. useful advice    B. boring news    C. interesting stories
72. If you are in a crowded hall away from the door when an earthquake happens, you mustn't try to get out because _________.
A. it's more dangerous outside      B. you may lose the way
C. people may hurt each other when rushing out at the same time
73. Which one is right during an earthquake?
A. If you smell gas, stay at home and wait for help.   B. Hiding under a heavy desk if you are indoors.
C. Using the lift to go downstairs.
74. You should _________if yo, u are buried in debris.
A. find a clear place      B. keep shouting for help      C. catch people's attention by knocking at the rocks
75. From the passage we know that_________.
A. keeping a cool head is very important during an earthquake
B. we can hide under the tree during an earthquake
C. we needn't care about aftershocks

71~75   ACBCA