(单选题)

The reason why Baleen whales feed on tiny creatures is that ______

A.Baleen whales are gentle mammals in the sea

B.Baleen whales have a well-developed sense of “smell”

C.Baleen whales have baleen to filter food, rather than having teeth

D.Baleen whales can’t swim fast due to their colossal size

参考答案：C

参考解析：

细节理解题。根据第一段第一、二句“...they feed on tiny creatures such as krill and zooplankton. That’s because these whales, instead of teeth, have bristle-like structures in their mouth—baleen—which filters out small critters from big gulps of water.”可知，须鲸以磷虾和浮游动物等微小生物为食的原因是，须鲸并没有牙齿，需要依靠鲸须过滤食物。A项指长须鲸是温和的海洋哺乳动物，不是原因，故排除；B项指长须鲸的嗅觉高度发达，文中未提及，故排除；D项指长须鲸由于巨大的体型无法快速游动，跟本题无关，文中未提及。结合题干，故选C。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语