71.  It really proves its usefulness in emergencies.

72.  Especially, it is in emergencies that the telephone really play its role.

73.  It's famous for its harbour and economies.

74.  Sometimes the product isn't as good as its advertisement.

75.  Therefore money has its evil side.

76.  So social activities lose its worthy and points.

77.  Its aim is to enable clildren who live in poverty-stricken rura areas to continue their education, people from all kinds of works try their best to help them .

78.  Everything, as we see, tends to be two-sided, so its disadvantages are inevitable.

79.  Yet telephone, no matter what men think, has brought far more advantages for humen than its disadvantages.

80.  Pop songs wern't acepted by traditional musicians because of its weakness .