阿摩線上測驗
20
(A) Once depleted, most shark populations are slow to recover.
(B) No one knows if the ban will be enforceable, but at least it is on the books.
(C) Over the past years there have been a couple of very positive developments.
(D) Therefore, that has caused the number of male sharks to decrease sharply in the past few years.
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統計： A(23), B(26), C(78), D(24), E(0) #418752
統計： A(23), B(26), C(78), D(24), E(0) #418752
