【题目】世界似乎到了末日。 然而，并非所有的希望都破灭了。（as if）

【答案】It seemed as if the world was at an end. However, all hope was not lost.
【解析】句子提供词语as if译为“似乎，好像”，“ 并非所有的”用部分否定，所以答案是It seemed as if the world was at an end. However, all hope was not lost.