【简答题】Unlike traditional commercials, Public Service Advertisements(PSA)are primarily designed to inform and educate rather than sell a product or service. The goal of a PSA is not to make a big sale, but r...
【简答题】小题1:Unlike traditional park, t________ parks often want to teach visitors something. 小题2:As you ________ (接近) the school the first building you see is the teaching building. 小题3:When in conferences, h...