32. Animal experimentation is needed to help _____ vast gaps in medical knowledge.
(A) bridge
(B) increase
(C) spread
(D) isolate

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統計： A(116), B(50), C(23), D(16), E(0) #2546267

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#4501409
bridge a/the gapto c...
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#5084827
bridge a/the gap  彌合差距；彌補隔閡；消除差異
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