topmbaseeker wrote:
Although ice particles in the upper atmosphere benefit Earth in that they reflect and
absorb solar radiation, acting as global thermostat and thus keeping Earth from either
burning up or freezing over, they also accelerate the destruction of the ozone layer by
reacting with chloroflurocarbons (CFC's).
A) acting as global thermostat and thus keeping Earth from either burning up or
freezing over, they also accelerate
B)acting as a global thermostat and thus keeping Earth either from burning up or
freezing over, while also accelerating
C)act as a global thermostat and thus keep Earth from either burning up or freezing
over, while also accelerating
D)they act as a global thermostat that thus keeps the Earth either from burning up or
freezing over, even though it also accelerates
E)they act as a global thermostat to thus keep Earth from either burning up or freezing
over, but they also accelerate
1. either X or Y, X and Y should be parallel
Carefully check B, D and E you will find X and Y violate the parallelism, B, D, E out
2. Although clause1, clause2
Carefully check B, C, D and E you will find all of choices violate the rule. For example:
B: Although...while also...
C....
D...Although...., even though
E...although...., but
A wins the game
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