“水缸出汗蛤蟆叫,不久将有大雨到”、“天上鲤鱼斑,明日晒谷不用翻”。这些气象谚语都是广大劳动人民在长期的实践中,通过观察而获得的认识。这证明了 ( )
178. There are four basic _____ of blood in the human body. What do you belong to, A, B, AB or O?
177. You should turn to Mrs. Green. She is the key figure in the company. The underlined part probably means _____.
176. Three times the accused was brought to court for trail, he was sentenced half a year’s imprisonment by the _____.
175. I preferred to go there by plane, but I hadn't enough money to pay for the _______.
174. The teacher asked his students to help the old lady to do some housework and they made a good _____ of it.