二、阅读短文，回答问题（每小题答案不超过6个单词）
Kobian, a human - like robot, which can express human feelings, has been unveiled (推出) by researchers at Waseda University in Japan.
The robot can express seven different feelings, including happiness, surprise, sadness and dislike. Kobian can express itself by not only using facial movements, but combining them with other body movements. Kobian can use motors (电动机) in its face to move its lips, eyelids and eyebrows into different positions. To express happiness, for example, the robot puts its hands over its head and opens its mouth and eyes wide. To show sadness, Kobian hangs its head and holds a hand up to its face in a gesture of sadness.
Kobian can walk around and sense its environment. It can also do different tasks. There are plans for it to be further developed and then possibly used in the field of nursing.
1. What is the passage mainly about?
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2. How can Kobian express its emotions?
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3. What feeling may Kobian show if it puts its hands over its head and opens its mouth and eyes wide?
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4. In which field will Kobian be further developed?
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