【单选题】This dearth should not surprise us. Hardly anyone has been encouraged, much less trained, to think for themselves, and their teachers and parents and bosses weren't either. And neither were theirs. (W...
【简答题】Rico is a dog who lives in Germany(德国). His owners trained him from a young age to find his toys. When they say the name of a certain toy, Rico can find it. In fact, he seems to know the names of 200 ...