单项选择题

The author's primary purpose is to

A．answer a theoretical question in the field of dinosaur thermoregulation
B．discuss the current state of research in the field of dinosaur thermoregulation
C．resolve a dispute in the field of dinosaur thermoregulation research
D．predict a future crisis in the field of dinosaur thermoregulation research
E． suggest some of the possible benefits of a technique in dinosaur thermoregulation research

<上一题目录下一题>

热门试题

单项选择题

According to the passage, the most severe problem currently facing scientists in conclusively determining whether certain dinosaurs were warm-blooded is

A．proving that thermoregulation is the primary means by which metabolic rates are influenced
B．developing a way of distinguishing between oxygen 18 and oxygen 16
C．showing that an absence of seasonal variation in oxygen 16 implies a constant internal temperature
D．finding a sample of dinosaur tissue which has survived 65 million years in a relatively intact form
E． determining which species of dinosaurs were most likely to be warm-blooded, and focusing research there

单项选择题

ARROGANCE: DEFER ::

A．contumeliousness: attack
B．clarity: convince
C．fidelity: protect
D．lassitude: stir
E． pompousness: annoy