题目内容
9、A Jian 10（Fighter-10）, China's most advanced military jet, made successful landing after engine failure．
A．a；an B．不填；an C．a；the D．the；不填
试题答案
9、A
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题目内容
9、A Jian 10（Fighter-10）, China's most advanced military jet, made successful landing after engine failure．
A．a；an B．不填；an C．a；the D．the；不填
试题答案
9、A