Student at Loughborough University in the UK has (1) _______ a robotic guide dog that will help guide visually impaired people who are unable to keep a real animal for some reasons. This (2) _______ is called Theia, named after the goddess of sight. Basically, Anthony Camu, the (3) _______, integrates the functions of a guide dog into a device which can be held (4) _______ hand. Using real-time online data such traffic or weather conditions, the device can program routes that take the users to destinations safely and quickly. The price of this device is also (5) _______, just around 10 per cent of the cost of keeping a guide dog. This is definitely a practical solution for the visually impaired (6) _______ cannot afford or keep a guide dog. 1. A. designed B. studied C. learned D. discovered 2. A. production B. product C. produce D. producer 3. A. user B. inventor C. thinker D. people 4. A. on B. to C. in D. for 5. A. portable B. thinkable C. enable D. affordable 6. A. who B. which C. what D. how