The second Sunday of May is ________ Mother’s Day. It’s ________ special day for children

to show their love for their mothers.

A．a；the

B．the；a

C．不填；a

D．不填；the

国际标准化的发展趋势（）

A.标准战略化

B.标准国际化

C.标准面向市场化

D.标准内容广泛化