阿摩線上測驗
96. Microscopes are used in medical research labs for studying bacteria or ______ that are too small to be visible to the naked eye.
(A) agencies
(B) codes
(C) germs
(D) indexes
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統計： A(17), B(9), C(125), D(12), E(0) #1592306
統計： A(17), B(9), C(125), D(12), E(0) #1592306
