6. Dr. Liu’s new book is a collection of his _____ of the daily life of tribal people in Africa.
(A) observations
(B) interferences
(C) preventions
(D) substitutions

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統計: A(34), B(3), C(5), D(4), E(0) #680728

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#1101015
observations:觀察
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#3052280
 tribal people in Af...
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