把下面句子改成“把”字句、“被”字句。     

1．他交给老师一份报告。  

“把”字句：                                                                                              

“被”字句：                                                                                               

2．小丽不小心丢了衣服。  

“把”字句：                                                                                                

“被”字句：                                                                                                

知识分子举止比较文雅、有修养，待人礼貌，但爱幻想，农民作风朴素，憨厚老实，工人集体主义强，守纪律。这种差别原因在于( )

A．遗传

B．家庭因素

C．阶级和阶层因素

D．文化传统因素