题目

幼根的生长一方面要靠区细胞的分裂增加细胞的数量；另一方面要靠伸长区细胞体积的增大。 答案：【1】分生 We can communicate ________ people in every part of the world ________ the Internet． [　　] A．with; with B．with; through C．through; through D．through; with