It was ________ surprise that my first teacher, already 90, was still living and in ________ good health.

A．the; a

B．/; a

C．a; /

D．a; the

《中华人民共和国矿山安全法》的立法目的是（）。

A．保障矿山生产安全

B．防止矿山事故

C．促进采矿业的发展

D．防止矿山爆炸

E．保护矿山职工人身安全