GRE课程
Questions 1 and 2 are based on this passage
In California’s Mojave Desert, archaeologists found two fluted projectile points, one on the surface, one buried, both similar to classic Clovis stone points from the American Plains. They obtained a radiocarbon date of 8,470 years from material associated with the buried point, a date far more recent than the known time range for Clovis points. There are three ways of accounting for this date. First, it is possible that fluted points were in use in this region around 8,470 years ago. Second, this point may somehow have been deposited at the California site long after its creation. Third, the 8,470-year date may be wrong: a second date from the same context providing an age of 4,360 years was rejected by archaeologists as incorrect.
It can be inferred that the second and the third explanations have which of the following in common?
Each implies that the known time range for classic Clovis points will need to be revised.
Each leaves open the possibility that the California fluted points were created contemporaneously with classic Clovis points.
Each suggests that the radiocarbon dating used at the California site produced unreliable results.
Each implies that 8.470 years ago, fluted points were more widely used on the American Plains than in the region of the California site.
Each is based on the assumption that the buried fluted point did not originate at the California site.
Select one answer choice.
