問題詳情
10. Which statement about hydrostatic skeletons is TRUE?
(A) Hydrostatic skeletons are nonflexible.
(B) Hydrostatic skeletons provide little support for muscle action.
(C) Hydrostatic skeletons produce rigid animals that maintain one shape.
(D) Hydrostatic skeletons can protect internal organs.
參考答案
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中