1 . 出于好奇，那个男孩打开了那个盒子，并发现了一个不为人知的秘密。(汉译英)

2 . He came back in the late afternoon to ________ that his suitcase was gone.

A．uncover

B．undercover

C．discover

D．discovery

3 . In the middle of the 19th century, in order to ________ the famine, millions of Irish people migrated to America to make a living.

A．risk

B．adapt

C．discover

D．survive

4 . 她的主要成就是发现了治疗疟疾的方法。
Her ________ ________ ________ ________ ________ a treatment for malaria.

5 . 当我们试图发现他人的优点时，不知不觉中自己的优点也会得到彰显。
________________ the best in others, we somehow bring out the best in ourselves.