阿摩線上測驗
20. Plankton,_____, is the basic foodstuff for everything that lives in the ocean.
(A) comprise both minute marine animals and plants
(B) minute marine animals and plants collectively that
(C) is the name given to minute marine animals and plants
(D) the collective name for minute marine animals and plants
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統計： A(14), B(5), C(5), D(138), E(0) #923648
統計： A(14), B(5), C(5), D(138), E(0) #923648
