参加中法马江海战的留美幼童有＿＿＿个
A、6
B、7
C、9
D、11
参考答案：A
---Do your parents have the same hobby?
---No．My father likes playing____ football while my mother enjoys playing _____piano．
A．／；the
B．／；／
C．the；／
D．the；the
隔离继电器的作用是什么？
