由于胶卷市场的极度萎缩,导致原来制作胶卷的企业也只能没落。
查看答案
______you can sleep well, you will lose the ability to focus, plan and stay motivated after one or two nights.
A. Once
B. Unless
C. If
D. When
You will never gain success ______you are full devoted to your work.
A. when
B. because
C. after
D. unless
Lessons can be leaned to face the future ______history cannot be changed.
A. though
B. as
C. since
D. unless
I don't believe we've met before. ______I must say you do look familiar.
A. therefore
B. although
C. since
D. unless