阅读理解。 Scientists recently found three kinds of animals living two smiles at the bottom of the Mediterranean Sea (地中海). Their small bodies have many cells-each about the size of a large sand-but they are animals. The most exciting thing about these creatures, is that they don't seem to need oxygen to live. What biologists know about life so far is that only one-celled (单细胞) animals can live in spaces that have no oxygen, and those animals who have many cells can visit these places, but cannot live there. These newly- found creatures could change that idea. The animals live in a super-salty lake under the Mediterranean Sea. It may seem strange to think of a lake under the sea, but the water in the lake is so salty that it cannot mix with the seawater above it, and the water in the lake is even saltier than normal seawater. Ordinary seawater has oxygen in it-which allows animals like fish to live-but the water in the lake doesn't have oxygen. Finding animals down there is surprising. The scientists at first thought they were the bodies of dead animals floating (漂浮) into the lake from somewhere else. But later, they found 'these dead bodies' appeared to be alive. Some of these animals had eggs, which suggests they were reproducing (繁殖); and their old skins suggest that they had lived there long enough to grow. But scientists still don't know how the animals live without oxygen. More studies are needed, and maybe biologists will need to rethink (重新考虑) what they know about animals. 1. At the bottom of the Mediterranean Sea, the scientists found _____. [     ] A. many one-celled animals B. three kinds of living animals C. some dead animals bodies D. animals that look like fish 2. What is special about the super-salty lake? [     ] A. The lake water doesn't mix up with the seawater above. B. Animals with many cells began to live in the lake. C. The water in the lake has much more oxygen. D. The water in the lake has different colours. 3. What can we infer from the text? [     ] A. The lake under the Mediterranean attracts many visitors. B. The animals in the super-salty lake catch scientists' attention. C. One-celled animals may lay eggs to reproduce. D. More animals can be found in the super-salty lake.