托福 tpo paragraph 7:An asteroid of this size would be expected to leave an immense crater,even if the asteroid itself was disintegrated by the impact.The intense heat of the impact would produce heat-shocked quartz in many types of rock.Also,large blocks t
2019-05-02
托福 tpo
paragraph 7:An asteroid of this size would be expected to leave an immense crater,even if the asteroid itself was disintegrated by the impact.The intense heat of the impact would produce heat-shocked quartz in many types of rock.Also,large blocks thrown aside by the impact would form secondary craters surrounding the main crater.To date,several such secondary craters have been found along Mexico's Yucatan Peninsula,and heat-shocked quartz has been found both in Mexico and in Haiti.A location called Chicxulub,along the Yucatan coast,has been suggested as the primary impact site.
11.The word intense in the passage is closest in meaning to
sudden
unusual
Immediate
extreme
12.What is the purpose of paragraph 7 in the passage?
It proposes a decisive new test of the Alvarez hypothesis.
It presents additional supporting evidence for the Alvarez hypothesis.
It explains why evidence relating to the Alvarez hypothesis is hard to find.
It shows how recent evidence has raised doubts about the Alvarez hypothesis