下列每题：

①2004年10月01日是国庆节，又是中秋节；

②10的倍数一定是5的倍数；

③梯形不是矩形；

④方程x²=1解x= $\pm$1；

其中使用逻辑连接词的命题有（  ）

《黑信》这则寓言告诉人们一个什么道理？

正所谓身正不怕影子斜，这是建立在自我的绝对自信以及身边的团队有着超级的凝聚力的基础之上。任何的流言蜚语，其目的不过两个：一，引起尽可能多的人去关注和议论；二，达到毁人不倦的目的。

形容没法解开或摆脱。

    My new Chinese teacher is Miss White. She is funny and kind. Her favourite food is salad because it is fresh and healthy. She can sing English songs and play the guitar. There is a lake in front of her house. Behind the house, there is a mountain. So she often climbs the mountain and plays some sports on the weekend. I like my Chinese teacher.