下列哪种光线形成的投影不是中心投影（　　）

A．探照灯

B．太阳

C．手电筒

D．路灯

短文改错。

      下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。每处修改仅限一词，

只允许修改10处，多者（从11处起）不给分。

     One morning, though the clock rang aloud, Mary didn't woke up until eight. She hurried got dressed,

snatched over her schoolbag, rushed towards her school. She ran so fast as she could, so that she might

miss the first lesson. But to her disappointed, she found the school was quiet. After she entered into the

schoolyard, it seemed that there was nobody in the school besides the guard. Mary was wondering how

it was so while she saw the word on the bulletin board. It was Sunday.

_____________________________________________________________________________________