問題詳情
9. To conserve precious salts, freshwater fish
(A) drink large amounts of water and produce small amounts of urine.
(B) drink almost no water and produce large amounts of dilute urine.
(C) excrete salt ions and small amounts of urine.
(D) consume salt ions in food and eliminate water by osmosis.
參考答案
答案：99
統計：A:0,B:0,C:0,D:0,E:0
難度：計算中