阅读下面短文，从短文后各题所给的四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。
The world's most human-like robot has begun work as a university receptionist. And scientists positively predict the new technology will 1 provide childcare and offer 2 to lonely elderly people.
With her soft skin and flowing dark-brown hair, Nadine does not only meet and greet3, smile, make eye contact and 4 hands, but she can even5 past guests and get into conversation based on 6 chats.
Unlike 7 robots, Nadine has her own personality and 8 . She can be happy or sad, 9 on the topic.
Powered by intelligent 10 similar to Apple's Siri or Microsoft's Cortana, she is the creation of scientists at the Nanyang Technological University in Singapore and is based on her creator Prof Nadia Thalmann.
Prof Thalmann, the director of the Institute for Media Innovation who led the development said robots such as Nadine are bound to become more visible in offices and 11 in future.
“Robotics technologies have 12 significantly over the past few decades and are already being used in manufacturing and logistics,” she said.
“As countries worldwide face 13 of an aging population, 14 robots can be one solution to 15 the shrinking(缩小的) workforce, become personal 16 for children and the elderly at home, and 17 serve as a platform for healthcare services in future.”
“Over the past four years, our team at NTU have been 18 cross-disciplinary(跨学科的) research in social robotics technologies— involving engineering, computer science, linguistics, psychology and other19 — to transform a virtual human(虚拟的人), from within a computer, into a 20 being that is able to observe and interact with other humans.”
