A:3.5g、4.6g
B:3.4g、3.6g
C:3.3g、3.7g
D:3.2g、4.7g
看图,选择合适的问句,把序号填在括号里。
A. Does she like cows? B. What do you like?
C. Do the boys know snakes? D. Does he like sheep?
鱼能够在水中生活,有两个特点至关重要:一是能靠____来获取食物和防御敌害,二是能够在水中____.