I am one years older than my brother. ____
— are the students in your class?
— Most of them are only fourteen.
下列句子中不含通假字的一项是( )
下列事例中,运用相同科学研究方法的是( )
①探究导体中电流与电压的关系;
②用水流比作电流;
③曹冲称象;
④用总电阻替代两个串联的电阻.