Which word in the reading means “living or growing in , happening in , or connected with water ” ? 
A.major
B.necessary 
C. fresh
D.aquatic

What does “methods ” in line 5 mean ? 
A.plans 
B.orders
C.structure
D.ways

What does “supply” in line 3 mean ? 
A.cover 
B.provide
C.make up for
D.compensate for

 When do conflicts decline ? 
A.When eroded soil and silt cloud affect many organisms. 
B.When natural resource shortages increase in the features of gradually increasing demands from human population.
C.When freedom could destroy the resource.
D.When a natural resource crosses political organisms

Which sentence below is NOT correct ? 
A.Farmers , fishers and industry leaders vie for open access to this river. 
B.Conservation methods are incidental to care for the river for future use .
C.A river may provide water for agricultural irrigation, habitat for fish , and water-generated electricity for a factory 
D.Argument often surrounds how a resource should be used , or allocated , and for whom.

What does “arise” in line 1 mean ? 
A.Get up
B.sit up
C.stand up
D.spring up

Which sentence below is true ? 
A.Conflicts improve when a natural resource crosses political borders.
B.The source of a main river may be located in the country through which the river flows than s different country.
C.The way where one ordinary source is managed has a direct effect upon other ordinary sources .
D.There is assurance that river source will be confined to provide accommodation for resource needs downstream .

What may bring water to agricultural irrigation ? 
A.A river
B.topsoil 
C.erosion
D.a forest

Which word in the reading means “a promise that something will be done or will happen , especially in a particular period of time ?”
A.Shortage
B. guarantee 
C.population 
D.habitat

A.ethic        
B.breathe    
C.marathon               
D.path