PrepTest 130, Section 2, Question 11
This passage was adapted from articles published in(459 more words not shown)
Which one of the following(14 more words not shown)
- AThey provide an(10 more words not shown)
- BThey help explain(15 more words not shown)
- CThey provide examples(15 more words not shown)
- DThey describe a(12 more words not shown)
- EThey provide specific(15 more words not shown)
Reading the passage
Those two sentences tell us how much work oil-flow prediction requires: tens of thousands of locations, hundreds of calculations at each, repeated over time. They're explaining why this is such a demanding problem, before describing Emeagwali's solution.
Working the answers
- A
The workload isn't an established approach he's challenging. Doing calculations sequentially is the old approach; these sentences describe the job that approach struggles to handle.
- BCorrect
They give the reason behind the first paragraph's statement that supercomputers were “too slow and inefficient.” The scale and repetition of the calculations explain why processing them one at a time wasn't adequate for this task.
- C
The tree-inspired network is the solution described later. These sentences establish the computational problem, not the network's design.
- D
They list what modeling the oil flow requires; they don't describe the mathematical model Emeagwali used. Naming the necessary variables is different from giving that model.
- E
The shift is toward a different computing design inspired by nature. These sentences supply the problem that motivates that shift, not examples of the shift itself.
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