When he was ordered from above to expel two______comrades-they insisted on challenging the leadership-he found himself caught between his official duties and his oldest______.

(A) less praiseworthy because of the absence of new listening strategies that allows listener to perceive their original context
(B) evidence of the musical supremacy of Western musical culture in virtue of their interesting use of gender metaphors
(C) wholly devoid of immanent musical characteristics, including but not limited to gender
(D) usually given interpretations that reveal more about the mindset of musical critics throughout history than the compositions themselves
(E) incapable of being explained, aesthetically speaking, by any form of musical criticism

(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