— Where is Mr. Green, do you know? I have something to tell him.
— He to Hong Kong for a meeting. He home three days ago.
我国《水污染防治法》规定：建立饮用水水源保护区制度，防止水源枯竭和水体污染，禁止在饮用水水源保护区内设置排污口．下列说法正确的是（ ）
下列动物中，属于软体动物的是（ ）
