A T-shirt a day has kept unemployment away for an American man who is making about $85,000 a year by selling advertising space on his shirt． Jason Sadler, 26, was once a former marketing expert from Florida. In 2008, he founded his own company, “iwearyourshirt”, with the idea to wear a T-shirt supplied by any company and then use social media tools to develop the company . Sadler charges the “face value”of  the day for his human billboard (广告牌) service. So January 1 costs $1, while December 31 costs $365. He said this may not sound like a lot, but it adds up to $66,795 a year if he sells out every day, which he did this year. He also sells monthly sponsorships(赞助) for $1,500, adding another $18,000 to his income. “I walk around, take photos, wear the shirt all day … I blog about those photos, I put them up on Twitter, I change my Facebook introduction…and then I do a Youtube video. I made about $83,000 this year,” he told Reuters Television. The average U.S income is about $615 a week or about $32,000 a year ,according to the U.S government. Sadler has already begun to plan for his year 2010. He is making services larger by hiring another person to wear a shirt a day on the west coast of the United States. 1．What is Sadler’s “face value” of the day December 30? A．$364.       B．$365.       C．$615.       D．$1,500. 2．It can be inferred that Sadler didn’t advertise on ________. A．Twitter     B．Facebook  C．Youtube   D．Reuters 3．Jason Sadler has a new plan to  ________ for the year 2010. A．employ another person to replace him    B．start his business on the west coast C．stay at home on the east coast  D．double the charge for the service 4．The passage is mainly about ________ in a new way. A．taking photos    B．writing blogs    C．making money D．selling T-shirts