单项选择题 A trader enters into a short cotton futures contract when the futures price is 50 cents per pound. The contract is for the delivery of 50,000 pounds. How much does the trader gain or lose if the cotton price at the end of the contract is 51.30 cents per pound.（ ） A.650C.$130

单项选择题 A.-0.146VB.0.146VC.-0.258VD.0.258V

多项选择题 《财主底儿女们》小说在“一二八”到“七七”以后这一大的历史背景下，通过苏州首户蒋家的分崩离析，以及第二代（）等人不同的思想历程。（ ）