下列词语中加点字的读音全不相同的一组是             （   ）

A．惟悴粉碎猝不及防出类拔萃

B．啜泣拾掇缀玉连珠笔耕不辍

C．翌日肄业苦心孤诣雄关险隘

D．追悼泥淖绰绰有余掉以轻心

Every minute about ____ babies are born in the world, so the world’s population is increasing by _____million every year.

A．256 ; 8

B．256; 80

C．261 ; 8

D．261; 80