why the river is so rich

why the river is so rich 英语脑筋急转弯：why is the river so rich? ? Why is the river rich? 谜语:why is a river so rich? why is the Yellow River yellow? why is a river so rich?iq题 The river is two metres long 是否等于The river is two metres in length?Why? why is the life so shit?so tell me why 谁知道这些话的意思：1.Why is the river so rich?2.Which side of a hen has the most feathers?谁知道12、句的意思? Why so crazy is the world? why is the letter E so important? Why is the letter E so important? Why is the life so wonderful? Why the result is always so. Why is the school so noisy? why is a river rich? Why was the river rich? So why is that