某建设单位建设一热电厂。该单位委托甲工程监理公司对工程进行监理，委托乙施工单位作为项目的施工总承包单位，并决定向美国丙重型设备制造商订购发电设备。

甲监理公司的总监理工程师在主持编制监理规划时，安排了一位专业监理工程师负责风险分析和相应监理规划内容的编写工作。根据该项目的具体情况，监理工程师对建设单位的风险事件提出了相应的风险对策，并制定了相应风险控制措施，见下表。

乙施工单位投保了建筑工程保险和附加第三者责任险。在施工过程中，对材料进行分隔存放。

建设单位向丙公司预定产品。订货合同规定了设备类型和数量，并规定了以美元作为支付货币，建设单位支付10%的定金。生产时间通常是4个月至9个月。建设单位担心人民币兑美元可能贬值，决定对风险套期保值，有效地使人民币的美元价值固定，从而使设备合同的美元价值固定。

根据题意，回答下列问题：

下列关于建设单位面对的汇率风险及其采取的措施的说法中，正确的为()。

A.建设单位面对的风险是投机风险 

B.建设单位有效地将风险转移给了金融市场的投资者 

C.建设单位采取的套期保值措施是风险中性化的一种方式，不能因此获利 

D.建设单位有效地将风险转移给了保险公司

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (51) an educational institution, and they are required to study for a minimum of fifteen hours a week on a (52) course. Prospective students have to show that they can afford their studies, and that they have sufficient (53) resources to support themselves (54) in this country.

In order to work here the foreigner needs a work permit, (55) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (56) these permits, and there is little that can be done (57) it; it would be extremely unwise for a foreign visitor to work (58) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the Common Market countries, who are often given (59) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (60) part-time jobs while they are studying here.

59().

A.temporary 

B.interior 

C.intelligent 

D.terrific