Question

_______ jeans were invented over 100 years ago, they're still in fashion today.

A．Because

B．If

C．Although

D．Since

Answer 1

C

试题分析：句意：尽管牛仔裤在100多年前就被发明了，现在他们仍然很流行。A. Because   因为；  B. If 如果；  C. Although  尽管；  D. Since自从。结合句意，牛仔裤被发明了100多年，现在仍然流行。可知前后表示让步关系，故用连词although，故选C。