题目

根据短文内容，选择正确答案。 My cat’s name is Lucy. She is a very pretty cat. Her hair is black and yellow. She has four children. She is very happy with her young babies. The four children are not all like Lucy very much. The biggest child is quite black. It is black with white feet and white ears. Two children are like their mother. They are black. My daughter says,” Aren’t they pretty? Can’t I have the black and white one? Isn’t he a tomcat(雄猫)?”     I say ,“I don’t know , but I know the yellow and black ones are female(雌性的).” “Aren’t 在△ABC中，若b=2,a=2，且三角形有解，则A的取值范围是(    ) A.0°＜A＜30°          B.0°＜A≤45°        C.0°＜A＜90°     D.30°＜A＜60°