按低于票面额的价格发行，到期按票面额清偿，发行价格与票面额的差价是投资人的收益，这种债券称为()。
城市居民最低生活保障资金从（）起计发。
Ms.Hartfieldwillmakeanexcellentexecutivebecause,whenconfrontedwithaproblem,sheknows-----whatcourseofactiontotake.
Thegovernmentagencylookscontroloftheoilindustryinadesperateattemptto-----thewildlyfluctuatingmarketprices.
Thedirectordecidedtodelegatesomeoftheworktoasubcontractorafterhisemployees-----helpwiththeproject.
