RC Drill Set 4, Question 9
Increases in the amount of carbon dioxide (CO2)(472 more words not shown)
Which one of the following(9 more words not shown)
- AApproaching the problem(19 more words not shown)
- BInconclusive data concerning(23 more words not shown)
- CCostly measures must(18 more words not shown)
- DGiven the lack(29 more words not shown)
- EScientists would be(34 more words not shown)
Reading the passage
We already predicted the main point: uncertainty about greenhouse warming isn't a reason to postpone all action. Start with measures that make sense for other economic or environmental reasons, then consider more costly steps as the science improves.
What we’re looking for
We're looking for some version of that recommendation. Keep both parts: acting now and letting later evidence guide additional action. Simply preparing for the worst would be less precise than the policy the writer actually proposes.
Working the answers
- A
This attacks the no-regrets approach as likely ineffective. The writer recommends it rather than presenting affordable action as an empty gesture.
- B
Waiting for every uncertainty to disappear is the opposite of the recommendation “not to forestall action.”
- C
The writer reserves more costly measures for later, “if warranted.” This demands them soon, before the proposed process of learning whether they are justified.
- DCorrect
Sensible action now, followed by responses to new knowledge, captures the policy we predicted. The uncertainty discussed earlier explains why the response should develop with the evidence instead of beginning with every expensive measure.
- E
The recommendation concerns what action makes sense under uncertainty. It doesn't claim that eliminating other environmental problems would let scientists make more accurate forecasts. This supplies a different reason for acting now.
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