“独”“特”的视角
unique; special
1. Today is a very ______ day for us — it was on this day 50 years ago that we first met.
2. Each person’s fingerprints are ______.
3. United Airlines is offering a ______ deal on flights to London.
4. It was a ______ achievement — none has ever won the championship five times before.
5. The journey provides a ______ opportunity to study these rare creatures.

Key: 1. special  2. unique  3. special 4. unique  5. unique / special
解析：
    unique意为“独特的；唯一的；独一无二的”，即一类中没有同样的（如2）；也可表示“非常好的；难得的”（如4和5）。
    special 意为“特别的；不同寻常的；专门的”，指因更好或更重要而不同于其他的（如1和5）或专为某个目的而设立的（如3）。