智力碰碰车I am a bird, but I cannot fly. To top of trees, nor (也不) in the sky.I don’t have teeth and don’t have hair, Just feathers5 on me everywhere.My legs are long, and fast I run If danger’s near ……

智力碰碰车1. You and your friend are going shopping. Your friend spends $10 more than you. You two spend $40 all together. How much does each of you two spend?2. If you drop4 a white hat into the Black ……