问题是我们应该选择哪条路线英文译为：The question is which route we should take.
重点词汇：
1.question问题、疑问;
例句：
I need a simple yes or no to my questions.
我的问题只需要简单地回答是或不是。
2.route路线、路途；
例句：
Plan your route in advance, using main roads as far as possible.
预先安排好你的路线，尽量走大路。
3.which哪一个；
例句：
There are two points which I wanted to make.
我想要指出的有两点。
温馨提示：
