题目

整式-0.3x2y，0， ， ， ， 中，单项式的个数有（ ）A. 3个 B. 4个 C. 5个 D. 6个 答案：【答案】B【解析】-0.3x2y是单项式；0是单项式； 是多项式； 是单项式； 是单项式； 是多项式，单项式共有4个，故选B.请你以“How to be popular”为题，写一篇英语短文。词数100左右，文章的题目和开头已给出，不计词数。   要点提示：1．衣着干净、整齐，保持微笑；   2．诚实，乐于助人；   3．懂得与他人合作；   4．其它。   How to be popularMost people would like to be popular with others，but what is the secret to achieve popularity? In fact，it is very simple．   ________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________