经济人进行理性选择的核心工具是

天津某进出口公司对斯里兰卡出口一批罐头，对外以CFR报价。在洽谈初期，由于无法得到斯里兰卡进口商的确切订购数量，只知道最少要订购10000件。这样，如果设罐头的成本价是每件10元人民币，该公司在对外报价时将运费计算进去后应报( )(假设这批货物的运费是500元人民币)。

A．10元人民币

B．10.05元人民币

C．500元人民币

D．1000元人民币

如果一机构部门在一时期内的经济总量如下：增加值为1000亿元，原始总收入为400亿元，可支配总收入为300亿元，总储蓄为300亿元。根据各部门在生产、收入分配和消费中的特点判定，该部门应该是（）。

A．政府部门 

B．非金融企业部门 

C．非营利性机构部门 

D．居民（住户）部门

卫星通信中使用水平极化和垂直极化的目的（）。

A.极化复用

B.提高发射功率

C.提高接收增益

D.降低时延

Questions 8—9
Walter: A copy of an artwork should be worth exactly what the original is worth if the two works are visually indistinguishable. After all, if the two works are visually indistinguishable, they have all the same qualities, and if they have all the same qualities, their prices should be equal.
Marissa: How little you understand art! Even if someone could make a perfect copy that is visually indistinguishable from the original, the copy would have a different history and hence not have all the same qualities as the original.

Marissa uses which of the following techniques in attempting to refute Waiter’s argument

A．Attacking his assumption that the price of an artwork indicates its worth.

B．Raising a point that would undermine one of the claims on which his conclusion is based.

C．Questioning his claim that a perfect copy of a work of art would be visually indistinguishable from the original.

D．Giving reason to believe that Walter is unable to judge the quality of a work of art because of his inadequate understanding of the history of art.

E．(E) Proposing alternative criteria for determining whether two works of art are visually indistinguishable.

病人，男，38岁，外伤后下腹部剧烈疼痛，并有少量血尿排出。腹部检查满腹有压痛、腹肌紧张，移动性浊音阳性，导尿试验阳性。应首先考虑是( )。

A．肾损伤
B．膀胱损伤
C．前 * * 损伤
D．后 * * 损伤
E．肠破裂