Billy and Sam were twins. They were in the same class. They were both very happy. One day their teacher asked the class to write a composition(作文)“My Mother”. Sam wrote one, but Billy was lazy. He just copied his brother’s.  The next day, the teacher asked Billy why his composition was the same as Sam’s. “We have the same mother, don’t we?”answered Billy.

根据短文内容判断句子正误，正确的填T，错误的填F。

小题1:Sam was older than Billy.

小题2:Sam and Billy were in different classes

小题3:The name of the composition was “My Mother”

小题4:Billy’s composition was the same as Sam’s

小题5:Billy was not lazy. He was very clever

将数字式比例尺1：50000改写成文字式应是 [ ]

A．图上1厘米代表实地距离50000千米 　

B．图上1厘米代表实地距离500千米

C．图上1厘米代表实地距离5千米 　

D．图上1厘米代表实地距离0.5千米