Sentence Correction

Experts, please explain the answers.


54. According to the professor’s philosophy, the antidote to envy is [u]one’s own work, always one’s own work: not thinking about it, not assessing it, but simply doing it.[/u](A) one’s own work, always one’s own work: not thinking about it, not assessing it, but simply doing it
(B) always work; because you don’t think about it or assess it, you just do it
(C) always one’s own work: not thinking about or assessing it, but simply to do it
(D) not to think or assess, but doing one’s own work
(E) neither to think about one’s own work nor to assess it, it is always simply doing it

OA: A


55. According to United States Air Force officials, a cannon [u]shooting dead chickens at airplanes has proved helpful to demonstrate[/u] what kind of damage can result when jets fly into a flock of large birds.
(A) shooting dead chickens at airplanes has proved helpful to demonstrate
(B) shooting dead chickens at airplanes has proved itself helpful as a demonstration of
(C) shooting dead chickens at airplanes proves itself helpful as demonstrating
(D) that shoots dead chickens at airplanes proves itself helpful to demonstrate
(E) that shoots dead chickens at airplanes has proved helpful in demonstrating

OA: E
56. Acid rain and snow result from the chemical reactions between industrial emissions of sulfur dioxide and nitrogen oxides [u]with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids.[/u]
(A) with atmospheric water vapor to produce highly corrosive sulfuric and nitric acids
(B) with atmospheric water vapor producing highly corrosive sulfuric and nitric acids
(C) and atmospheric water vapor which has produced highly corrosive sulfuric and nitric acids
(D) and atmospheric water vapor which have produced sulfuric and nitric acids which are highly corrosive
(E) and atmospheric water vapor to produce highly corrosive sulfuric and nitric acids

OA: E