1. 밑줄 친 they[their]가 가리키는 대상이 나머지 넷과 다른 것은?
Whether woven or printed, a fine tie is a work of art from beginning to end. Woven silk ties are the most luxurious of all. Though less common today, ①they were at one time the essential accessory of a true gentleman. Because of ②their high manufacturing cost, woven silk ties are very expensive. This in part accounts for the fact that ③they now represent only five percent of tie production. But ④they will never fall entirely by the wayside and will make periodic comebacks. Printed silk ties are much cheaper and simpler than ⑤their woven counterparts. However, silk printing demands a high level of technical mastery. *woven: (실로) 짠 이거 9월 모의평가인데요

여기서 색깔 칠해진 this가 가리키는것이 뭐에요??

그리고 this ~ tie production. 이 문장에서 동사가 accounts 맞나요?..