書名：寂天新多益閱讀超高分
頁數：p.189 第183題 (雙篇閱讀)
題目：
不知道是不是需要把雙篇全部文章打出來?
我先把我覺得相關的文章打出來
The bus arrives every 30 minutes,and the train arrives every 15 minutes.
Tickets for the expres train can be purchased online,while bus tickets
are only available in person.
183.According to the letter, what advantages does the train have over
the bus?
(a)They run more frequently.
(b)Discounts are available.
(c)Refreshments are sold on board.
(d)Tickets can be purchased online.
疑問：第2句可以看出(d)為正解,這是沒問題的
問題是(a)錯在哪裡?
附上爭議點部分的解答翻譯
The bus arrives every 30 minutes,and the train arrives every 15 minutes.
公車每30分鐘一班,而火車則是每15分鐘一班
(a)They run more frequently. 班次較頻繁
我的疑問是從我附上翻譯的這句來看,(a)我也認為是對的,
唯一的破綻是(a)選項主詞用they
讓我猜測可能就是錯在這裡? 但又不能肯定
煩請板上先進解惑,感激不盡