Question

in one study, researchers used a laser beam and advanced optical techniques to measure winds. the observatory also keeps detailed weather records that scientists have used to track climate trends and weather patterns. the observatory has also advanced scientists’ understanding of clouds, of ice physics, and the atmosphere. 4 to conduct all this research, staff are on - site year - round. observers, who work several twelve - hour shifts over the course of a week. to change personnel in winter, though, crews ascend the mountain in a vehicle, gripping the snow using revolving tracks similar to those on a military tank. observers go outside every 52. the observatory has also advanced scientists’ patterns. f. no change g. in addition, the h. additionally, the j. also, the 53. understanding of clouds, of ice physics, and the atmosphere. a. no change b. furthered our knowledge of ice physics, c. as well as ice physics, d. ice physics, 54. year - round. observers, who work several twelve - hour shifts over the course of a week. f. no change g. observers who work h. observers work j. observers, working 55. in winter, though, crews ascend the mountain in a a. no change b. winter, of course, c. winter, however, d. winter, 56. vehicle, gripping the snow using revolving tracks similar to those on a military tank. observers go outside every f. no change g. vehicle while gripping h. vehicle that grips j. vehicle and grip

Explanation:

Question 52

The original sentence and the context need a transition that shows an additional action of the observatory. "Additionally, the" (H) fits better than the original or other options. "In addition, the" (G) is a bit wordy, "Also, the" (J) is less formal in this context, and "NO CHANGE" (F) doesn't provide the right transition.

The original phrase "of ice physics, and the" is awkward. Option C "as well as ice physics," correctly connects the items (clouds, ice physics, atmosphere) in a parallel and grammatically correct way. Option A (NO CHANGE) is incorrect structure, B is about furthering knowledge (not matching context), D is a fragment.

The original "Observers, who work several twelve - hour shifts over the course of a week" is a non - essential clause. But the context needs a more direct statement. "Observers work" (H) is a simple and correct subject - verb structure. "Observers who work" (G) is a relative clause that doesn't fit the sentence structure, "Observers, working" (J) is a participial phrase that is less direct, and "NO CHANGE" (F) has an incorrect clause structure.

Answer:

H. Additionally, the

Question 53