GRE Text Completion Question 1354
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Source: Red
The fact that a theory is (i) _____ does not necessarily ensure its scientific truth,which must be established by (ii) _____ controlled studies.
| Blank(i) | Blank(ii) |
|---|---|
| A plausible | D alleviated |
| B venerable | E unbiased |
| C cumbersome | F overridden |