下列哪项不是龈上边缘的主要优点A．便于边缘检查B．美观C．牙周刺激小D．不易引起牙龈

短文填空 用方框中所给单词的适当形式填空，使短文完整正确。（每个单词限用一次，每空只填一个单词。每题1分，共10分）

way,  good,  eat,   knowledge,  read , always , when , interest, find out, something

Food is very important. Everyone needs to    小题1:   well if he or she wants to have a strong body. Our minds also need a kind of food. This kind of food is    小题2:  We begin to get knowledge even  小题3:  we are very young. Small children are    小题4: in everything around them. They learn 小题5: while they are watching and listening. When they are getting older, they begin to  小题6:   story books, science books…, anything they like. When they find something new, they love to ask questions and try    小题7:   the answers. What is the best   小题8:  to get knowledge? If we learn by ourselves, we will get the most knowledge. If we are    小题9:  getting answers from others and do not ask why, we will never learn well. When we study in the right way, we will learn more and understand   小题10:  .