下列各组动物中，都用鳃呼吸的是（ ）
A：珍珠蚌、鲫鱼、鳖
B：河蚌、鲨鱼、海马
C：鲸、蛇、乌龟
D：青蛙、青鱼、蝌蚪
A month had passed, but the government didn't find the________of the mine accident.
①呼气 ②出汗 ③排便 ④排尿
yellow window____
