A．Because the whales hunt too close to the shores. B．Because the whales failed to detect the sloping coastlines. C．Because human activities affect whales' lives deeply: D．The reason is still unknown.
A.Because B. B．Because C. C．Because D.The
【参考答案】
D 解析：文章对鲸鱼搁浅的原因提出了两个可能，但均未得到广泛的认可。文章最后一句提到the reason beh......