5．
One of the most frightening natural 61. ________ （disaster）is a violent earthquake. In 1976, there was a great earthquake 62. ________ (occur) in Tangshan, China. More than 240,000 people were killed and another 164,000 people were injured. About 90% of houses and buildings in Tangshan 63. ________ (destroy) as a result of it.
(1) ________ is very difficult to predict when or where an earthquake will happen, 65. ________ you should be prepared ahead of time (提前). Do the following things 66. ________ (protect) yourself in the event of an earthquake.
Drop to your hands and knees. Cover your head and neck with your arms. This position protects you 67. ________ falling and provides some protection for important organs (器官). If you can move 68. ________ (safe), search for cover under a strong desk or table. Hold on to any strong shelter until the shaking stops. Stay away from glass, windows, and things 69. ________ could fall.
Do not go out of 70. ________ building during the shaking. Research has shown that most injuries occur when people inside buildings try to leave.
Do not use the elevators.