

1. Superconductivity will revolutionize the way that energy is used for the next millennium and ................................the first truly superconductive substance will be remembered as a technological hero
A, what the discovery of
B, the discovery of
C, whoever discovers
D, whose discovery of
2, ............................is lubricated can effect the longevity of the moving parts that rub together
A, how often a machine
B, a machine often
C, often a machine
D, how often machines
A, what the discovery of
B, the discovery of
C, whoever discovers
D, whose discovery of
2, ............................is lubricated can effect the longevity of the moving parts that rub together
A, how often a machine
B, a machine often
C, often a machine
D, how often machines