小明同学欲通过化学实验证明“质量守恒定律”，确定以“稀盐酸与碳酸钙反应”为研究对象，设计的实验装罝如图所示．

    The lion says that he is________So he asks all the animals to come and listen to his last wishes.

    The cat comes to the lion's cave(洞穴). He stands there and goes in. Then a sheep goes in. Before she comes out, a rabbit goes in to hear the last wishes of the king of animals.

    But soon the lion looks well again, and goes out of his cave. He sees a fox(狐狸) waiting outside. “Why don't you come in?” asks the lion to the fox.

    “I beg your pardon,” says the fox, “I see many animals go into your cave, but nobody comes out. Before they come out again, I will wait outside.”