1. In terms of physics, the characteristic feature of the roller coaster is that (the cars'potential energy, gained through their being lifted by a chain drive) through the Earth's gravity to the top of the first drop, has been converted to kinetic energy by the time the ride ends.
B.cars' potential enerygy, a gain achieved as they are lifted by a chain drive
D. potential energy of the cars, gained as a chain drive lifts them
Key is D.Why not B?
2.The record of the past is always incomplete,and (the historian who writes about it inevitably reflects) the preoccupations of their own time.
C. a historian writing about it inevitably reflects
E. historians in writing about it inevitable reflect
Key is E, why not C?
Did 3 sections of SC, the best is 6 out of 27 questions, the worst is 11 out of 27. Really frustrated!
