The main idea in this passage is that ______

A．most marketable pearls are cultured because nature does not produce enough of its own to satisfy the market

B．cultured pearls are of a higher quality than natural pearls

C．there are two major methods of pearl-making

D．a natural "drought" of pearl production is taking place

个人因各种原因终止投资、联营、经营合作等行为，从被投资企业或合作项目、被投资企业的其他投资者以及合作项目的经营合作人取得股权转让收入、违约金、补偿金、赔偿金及以其他名目收回的款项等，均属于个人所得税应税收入，应按照“其他所得”项目适用的规定计算缴纳个人所得税。