题目

    It is common to consider learning as something that takes place in school，but much of human learning occurs outside the classroom，even from birth and people continue to learn throughout their lives. Even before they enter school，young children learn to walk，to talk and to use their hands to use toys，food，and other objects.They use all of their senses to learn about the sights，sounds，tastes and smells in their environments.They learn how to communicate with their parents，grandparents，siblings，friends and other people important to their world.When they enter 已知等差数列{an}满足a2＋a4＝4，a3＋a5＝10，则它的前10项的和S10＝ [　　] A．138 B．135 C．95 D．23