The Malaysia government has searched for MH370 for several months, but so far they’ve

made no ________.      .

A．contribution

B．progress

C．introduction

D．protection

古诗文默写。(5分，每空1分)

小题1:桑之未落，其叶沃若。                  ，               ！ (《诗经•氓》)

小题2:复为慷慨羽声，                   ，                。 (《荆轲刺秦王》)

小题3:                     ，池鱼思故渊。(陶渊明《归园田居（其一）》)