在密碼學的意義上，只要存在一個方向，比暴力搜索秘鑰還要更有效率，就能視為一種“破解”。
1、正確正確
暫無解析
Thetwinshadbeenawayforsuchalongtimethatmanypeopleinthevillagethoughtthey________.
________Tomhasdonereallyamazedeveryoneinhisclass.
WithanappropriateconjunctiveLastmonthIboughtawatch.Itischeap,________itgoesquitewell.
Thenewspaperwillhavetoclosedownifitcannotincreaseits________considerably.
Everyoneisexcitedbythenews,________________?
