某零部件生产企业为增值税一般纳税人，每件产品的不含税售价为1000元，每件产品的成本

读短文，判断正(T)误(F)。

      Becky is a little girl. She is only five. She does not go to school and of course, she can't read or write. But

her sister Mary is a schoolgirl. She is ten. 

      One day, Mary sees her little sister at the table with a pen in her hand and a big piece of paper in front of

her. " What are you doing, Becky? " she says. 

      " I'm writing a letter to my best friend Sally." says Becky. 

      " But how can you? " says her sister. " You can't write." 

      " Well," says Becky, " It doesn't matter (没关系), because Sally doesn't know how to read."

( ) 1. Becky goes to school every day.

( ) 2. Mary can read and write.

( ) 3. Sally can read Becky's letter.

( ) 4. Sally is a friend of Becky's.

( ) 5. Sally is a schoolgirl.

导致事故的行为性危险和有害因素不包括( )。

A．指挥错误

B．操作错误

C．监护失误

D．辨识功能缺陷

餐厅服务在为客人送上帐单之前（）工作是必须要做的，以确保客人满意。

A、提供茶水服务

B、计算食品的营养成份

C、仔细核对帐单

D、提供制做菜肴厨师的姓名

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