题目

任务型阅读 As we all know, friendship is of great importance in our daily life. A friend can give us help and share our difficulties and happiness. But how to make friends is still difficult to some of us. 1). Be friendly to others. You should try to make a stranger feel at home wherever he happens to be. Think more of others than of yourself and never judge a person by his appearance and clothes. 2). Be reliable. If you and your friend agree to meet somewhere, don't be late. If you're not going to make it on time or make it at all, call them as soon as you realize it. Be someone that 某同学分别测量了三块橡皮泥的质量和体积，并根据测量数据画出如图所示的图象，从图象可知橡皮泥的质量跟体积 （选填“成正比”或“成反比”），橡皮泥的密度是 g/cm3，若另一块同种橡皮泥的体积为25cm3，其质量是 g．