GRE Text Completion Question 1543
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Source: CQ
Scientific discoveries are often thought of as the result of (i)_____ effort, but many discoveries have, in fact, arisen from (ii)_____ or a mistake.
| Blank(i) | Blank(ii) |
|---|---|
| A incidental | D an accident |
| B systematic | E a method |
| C collaborative | F a mishap |