一般来讲,地球表面的()越复杂,对风的减速效果越明显。
参考答案:粗糙程度
作文。(50分)
以“珍惜那一瞬间”为题,写一篇以记叙为主、600字以上、卷面整洁的文章。
—How is it from here to your home?
—It's about _________. [ ]
A. five minute walk
B. five minutes' walk
C. five minute walks
D. five minutes' walks