[問題] 2002年8月 Q38 [structure]

[a16327]

38.Perhaps the most distinctive features of sharks and undoubtedly one of the most important reasons

for their success is their well-developed sensory system.

答案是A
但是不懂 爲何A不對呢

[craisins]

features 應該為單數, 可以由後面的one跟success後面的is判斷