题目内容
The doctor couldn’t explain the _____________ of his high temperature. What’s worse, the __________ cough and headache led to his continual insomnia (失眠).(persistent)
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The essence of ___________ is the attempt to control the animal instincts of humans to build a better life. Until we understand that, all our efforts to _______ ourselves are doomed to failure. (civilization)
Rich in folklore and stunning scenery, such a vast island is sparsely __________ by about 1,000 people. It retains a relaxing, friendly atmosphere towards outsiders, especially those from __________ regions. (populate)
Chinook salmon (奇努克鲑) hatch (孵化) in freshwater rivers but ________ out to the Ocean. It turns out these fish may have a magnetic “map” in their heads that enables them to make their oceanic __________ to strange locations. (migration)
过氧化物酶体的主要功能是
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