________ of the workers around the country lost their jobs in ________.
A：Five-eighths; the 1990s
B：Five-eighths; the 1990
C：Five-eighth; 1990s
D：Five-eighth; 1990
植被的破坏容易引发泥石流，对于生活在平原地区的我们，也应为预防泥石流做出自己力所能及的贡献。下列行为有违此要求的是（ ）
