【判断题】Perhaps the best thing about the Big House is its automation system. T here are over 100 camers, 400 sensors and a powerful computer to gather information in the home. T he information is used to cont...
【单选题】When Mr. David retired(退休), he bought a small house in a village near the sea. He liked it and hoped to live a quiet life in it. But to his surprise, many visitors came to see his house in summer holi...