9. A new organism has been found that is autotrophic and has a cell wall consisting of silica. This organism can be
(A) radiolarian or forams
(B) diatom or forams
(C) dinoflagellate or forams
(D) radiolarian or diatom

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統計： A(1), B(0), C(0), D(0), E(0) #4063967

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#7581679
  答案：D．radiolarian o...
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