These channels origin at topographic high points; the valleys widen " downstream" , some even displaying inner valleys.

admin2017-06-15  47

问题 These channels origin at topographic high points; the valleys widen " downstream" , some even displaying inner valleys.

选项

答案词性混用,应把origin改为originate。

解析 origin是名词,意思是“起源,由来”,其动词形式为originate,意思是“引起,发起,起源”。
转载请注明原文地址:https://kaotiyun.com/show/pUsK777K
0

最新回复(0)