未知题型 Once again, Success in farming is accompanied by new worries, which brought about a disaster to the villagE.A.assaultedB.followedC.approvedD.adapted

单项选择题 某水坝工程可以满足各种功能要求的方案有A和B两个：A方案的建造费用为1000万元，每年的运行及维护费用为150万元；B方案的建造费用为1500万元，每年的运行及维护费用为100万元。两个方案的寿命期皆可以看作为无限年。设贷款的利率为5％。A、B两方案的差额年值为（ ）万元。

未知题型 The biggest computer company in Silicon Valley has laid off hundreds of people during the last few years.A.declinedB.detachedC.dismissedD.dispersed