下述植物何種不具下垂性枝條?
(A)垂葉馬纓丹
(B)矮性仙丹
(C)錫蘭葉下珠
(D)武竹
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統計: A(2), B(109), C(2), D(12), E(0) #284117
統計: A(2), B(109), C(2), D(12), E(0) #284117