A the ource of life， water i indipenable (不可缺少的) to human being. People conume much water in production and daily life. Agriculture and indutry account for mot of mankind' water uage. Without adequate water upplie， human future i threatened.
Nowaday water hortage touch a large percentage of world population. According to one UN tudy in 1999， nearly one in five people lack afemclean waterg WaterWelated dieae in ome area are killing people. Population exploion and water pollution make water crii increaingly urgent. Water related problem are likely to woren in the foreeeable future.
The ituation i really alarming (令人震惊的). Therefore， immediate and effective meaure mut be taken to protect and exploit water reource. Remember， where there i water， there i life. If we could not make proper ue of water reource on earth， the lat drop of water would be our teardrop.
核心剖析 本文根据需要，并未使用冗长或过于复杂的句子，意思明白无误，行文层次清晰，表达干脆利落而不落俗套.