白色垃圾
参考答案：
指铁路沿线抛弃的一些不可降解的塑料制品。
解释下列划线的词语。
（1）夏水襄陵，沿溯阻绝：______________
（2）虽乘奔御风：______________________
（3）素湍绿潭：________________________
（4）属引凄异：________________________
You can't complain of being left out you don't make any effort to share your happiness and sorrow
with others.[ ]
A. when
B. unless
C. once
D. though
