Early factories relied on steam engines for turning out power to fabricating goods.
A.Early      
B.for 
C.relied on
D.to fabricating

Schools are important, vital means by which modem education is provided.
A.Schools    
B. important, vital 
C.by which      
D.is provided

The transatlantic telegraph cable is broken by a number of relay stations to boost the signal.
A.strengthen
B.prosper  
C.swell 
D.subside

Formerly a palace, the Louvre was made a museum after the French Revolution.
A. Henceforth  
B.Eventually      
C.Previously     
D.Frequently

Apples not only contain several essential vitamins but have been proven to aid digestion and help keep teeth healthy and clean.
A. extra  
B.common  
C.unusual           
D.important

Supplies of natural gas are diminishing.
A.dwindling   
B.contracting    
C.swelling     
D.condensing

Stagnant water around a home should always be removed, as it is a breeding place for mosquitos.
A.Moving  
B.Still          
C.Muddy   
D.Clean

________(38)
A.place   
B.set
C.make 
D.locate

________(39)
A.need         
B.must  
C.should  
D. would

Which of the following best describes the organization of this passage?
A.a chronological listing of the extinction of dinosaurs
B. a discussion of how an asteroid can destroy life
C.a listing of different ways that life on Earth could end
D.a comparison of asteroids and wildfire