EI NIno is name given to the masterious and often unpredictable change in the climate of the world.This strange ___1_____happens every five to eight years.It starts in the PAacific Ocean and is thought to be caused by a failure in the trade winds，which affects the ocean currents driven by these winds. As the trade winds lessen in ____2____,the ocean comperatures rise causing the Peru current flowing in form the east to warm up by as much as 5`C.

　　The warming of the ocean has far-reaching effects.The hot,humidair over the ocean causes severe ___3___thunderstorms.The rainfall is increased acrossAounth American ____4____floods to Peru.In the West pacific,there are droughts affecting Australia and Indonesia.So while some parts of the world perpare for heavy rains and floods,other parts face drought,poor crops and____5____.

　　EI Nino usually lasts for about 18 months The 1982-83 EI Nino brough the most___6____weather in mordern history .Its effect was worldwide and it left more than 2,000 people dead and caused over eight billion pounds ____7___of damage.The 1990 EI Nino will ____9___,but they are still not __10___sure what leads to it or what affects how strong it will be.

　　A)estimate

　　B)strength

　　C)deliberately

　　D)notify

　　E)tropical

　　F)phenomenon

　　G)stable

　　H)attraction

　　I)completely

　　J)destructive

　　K)starvation

　　L)bringing

　　M)exhaustion

　　N)worth

　　O)strike

　　EI NIno is name given to the masterious and often unpredictable change in the climate of the world.This strange ___1_____happens every five to eight years.It starts in the PAacific Ocean and is thought to be caused by a failure in the trade winds，which affects the ocean currents driven by these winds. As the trade winds lessen in ____2____,the ocean comperatures rise causing the Peru current flowing in form the east to warm up by as much as 5`C.

　　The warming of the ocean has far-reaching effects.The hot,humidair over the ocean causes severe ___3___thunderstorms.The rainfall is increased acrossAounth American ____4____floods to Peru.In the West pacific,there are droughts affecting Australia and Indonesia.So while some parts of the world perpare for heavy rains and floods,other parts face drought,poor crops and____5____.

　　EI Nino usually lasts for about 18 months The 1982-83 EI Nino brough the most___6____weather in mordern history .Its effect was worldwide and it left more than 2,000 people dead and caused over eight billion pounds ____7___of damage.The 1990 EI Nino will ____9___,but they are still not __10___sure what leads to it or what affects how strong it will be.

　　A)estimate

　　B)strength

　　C)deliberately

　　D)notify

　　E)tropical

　　F)phenomenon

　　G)stable

　　H)attraction

　　I)completely

　　J)destructive

　　K)starvation

　　L)bringing

　　M)exhaustion

　　N)worth

　　O)strike