10. 빈칸 (A), (B)에 들어갈 말로 가장 적절한 것끼리 짝지은 것은? From the advertiser ̓s point of view, the key to a successful direct mail program is the mailing list. The mailing list contains the names and addresses of people who share certain common characteristics that suggest they will be likely to buy a particular product or service. (A) advertisers are speaking directly to those who are most likely to buy their product or service, many advertisers consider direct mail the most effective of all advertising media for generating immediate results. Direct mail through the U.S. Postal System, (B) , is the most expensive form of advertising, costing about 14 times as much per exposure as most magazine and newspaper ads. (A) (B) (A) (B)
① Though therefore ② Because however
③ Though otherwise ④ Because therefore
⑤ Unless however

//정답이 2번이나/ 전 4번이라고 생각합니다.
그만큼 디엠이 효율적이므로 더 비싸다고 생각합니다.
애매합니다. 의견 기다립니다.