Read and Judge.读短文,判断表格中的单词是对是错。
Hello. I am a boy. My name is Jack. I carry my bag and go to school. 1 have a pendl-case. Open my pencil-case. I have a pen, pencil, and shmpener ( 削笔刀). And the books are in the bag.
下列实验方案不可行的是 ( )
人们对“光的本性”的认识,经历了漫长的发展过程.下列符合物理学史实的是( )