【单选题】As a number of authors point out, the urge to migrate is a(n) _______ part of human nature.
A. interval
B. integral
C. external
D. integrate
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【单选题】Children should be allowed to _______ those few years of innocence before they have to learn the truth about the real world.
A. perish
B. polish
C. abolish
D. cherish
【单选题】He has been _______ by a horrible disease, from which one of his best friends died two weeks ago.
A. competed
B. afflicted
C. portrayed
D. cherished
【单选题】The results of the survey are _______ and useful despite being from a small sample.
A. noteworthy
B. perpetual
C. eventual
D. troublesome
【单选题】The director said that they needed a young actress who could _______ someone who was both unbalanced and confident at the same time.
A. portrait
B. portrayer
C. portray
D. protrude