Researches show that babies who are not held or touched can become sick and even die. Scientists have also studied how touch influences brain growth. Babies who are rarely touched often have much smaller brains than babies who get lots of hugs and attention, and they may develop behaviour problems as they grow up. In the 1950s a psychologist did an experiment on baby

　　monkeys. He took the monkeys away from their mothers and put them into cages with two fake mother monkeys. One was made of wire and had a milk bottle tied to it. The other one was made of wood, covered in terry cloth, and did not have a milk bottle. The psychologist thought the monkeys would go to the wire mother because it had food. However, he saw that the monkeys held onto the terry cloth mother for hours, preferring the feeling of warmth and softness over food. From the monkey's behaviour, the scientists discovered that babies need more than something to eat, they also need soft touch.

　　9. Babies like to be wrapped in warm blankets because________.

　　A. it makes them feel as if they were still in their mother's womb

　　B. babies have cold skin

　　C. the blanket feels like the mother's skin

　　D. it keeps them from becoming sick

　　10. How is the touch organ different from the other sense organs?

　　A. It is found in only one location of the body.

　　B. It does not keep us from danger.

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