GRE阅读真题OG2 Passage 1

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OG-2

Passage 1

Fossil bones of the huge herbivorous dinosaurs known as sauropods were first discovered and studied between 1840 and 1880, providing evidence for the gargantuan dimensions of the adults. The shape of sauropod teeth suggested what they ate. But aside from trackways, or series of fossilized footprints — which established that sauropods at least occasionally lived in herds — fossils incorporating direct evidence of other behavior, such as reproductive behavior, have been almost nonexistent. Because no modern land animals even approach sauropod size, scientists have also lacked a living analogue to use as a guide to possible sauropod behavior. Until the recent discovery of fossilized sauropod nesting grounds, scientists were thus uncertain whether sauropods laid eggs or gave birth to live young.

For the following question, consider each of the choices separately and select all that apply.

1. Which of the following can be inferred from the passage regarding the evidence provided by sauropod teeth?

A. The teeth allow inferences to be made about sauropod social behavior.

B. The shape of the teeth indicates that sauropods were herbivorous.

C. The teeth have no resemblance to those of any modern land animal.

For the following question, consider each of the choices separately and select all that apply.

2. Which of the following can be inferred from the passage regarding the recently discovered fossilized sauropod nesting grounds?

A. They are among the few fossils incorporating direct evidence of sauropod behavior.

B. They confirm the evidence provided by trackways about sauropod behavior.

C. They have forced a reevaluation of theories regarding the nature of sauropod herd behavior.

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