American school life is different from (和……不同) Chinese. American students usually get to school at around 8:30 in the morning. They put their school bags in their lockers (柜子) and only take one book, one notebook and one pen to each class. In class, American students can sit in their seats (座位) when (当……时候) they answer their teachers questions
   At around 12:00 students have lunch. American students don’t go home for lunch. They have it at school. Most students like pizza(比萨), hot dogs or hamburgers. At 1:00 in the afternoon, they start to have classes. Their classes are usually over(结束) at three o’clock. Then they join in the activities （活动）of clubs or sports.

将词语补充完整。

____ ____闪闪      兴____ ____烈       ____ ____不同

如果一个数的平方与这个数的差等于零，那么这个数只能是（　　）

中央电视台的星光大道2007年的总冠军--杨光，是一位从8个月大时就双目失明的盲人歌手。他凭借坚定的信念和对梦想的追求，坚持不懈，一步一步走向成功，他的成功主要得益于（   ）
①自尊自信  ②自立自强  ③运气较好  ④自卑自弃