11÷3=____∶____
She reached the top of the hill and stopped _______ on a big rock by the side of the path.
用基因组成是Aa的青州蜜桃枝条为接穗,嫁接到基因组成为aa的青州蜜桃砧木上,所结蜜桃果肉细胞的基因组成为Aa的概率是( )
看汉字,写拼音。
____ ____ ____
耍 慌 狮