当关系中的某个属性或属性组合不是该关系的主关键字，但却是另一个关系的主关键字时，称该

一位渔民在长江口打鱼时捞到一头“大死鱼”．它身体呈鱼形，体长3米，背呈浅蓝色，头部有一吻，上下颌有牙齿30颗，眼不发达，头顶有一呼吸孔．解剖体内有一脊柱，有肺、心脏、胃、肝、肠等器官，与人相似，还怀有已死亡的幼体．围观村民们议论纷纷，对这“动物”的类别进行探究．

①提出问题：______

②建立假设：Ⅰ村民甲认为此“动物”是鱼类；Ⅱ村民乙认为此“动物”是哺乳类；

③获取证据：村民甲的证据：Ⅰ______；Ⅱ______．

村民乙的证据：Ⅰ______；Ⅱ______．

④结论：根据上述动物的特征和你学过的知识，你认为______（选填“村民甲”或“村民乙”）的假设是正确的．

(A)

Arthur Miller (1915-2005) is universally recognized as one of the greatest dramatists of the 20th century. Miller’s father had moved to the USA from Austria-Hungary, drawn like so many other by the "Great American Dream." However, he experienced severe financial hardship when his family business was ruined in the Great Depression of the early 1930s.

Miller’s most famous play, Death of a Salesman, is a powerful attack on the American system with its aggressive way of doing business and its insistence on money and social status as indicators of worth. In Willy Lowman, the hero of the play, we see a man who has got into double with his worth. Willy is "burnt out" and in the cruel world of business there is no room for sentiment: if he can’t do the work, then he is no good to-his employer, the Wagner Company, and he must go. Willy is painfully aware of this, and at loss as to what to do with his lack of success. He refuses to face the fact that he has failed and kills himself in the end.

When it was first staged in 1949, the play was greeted with enthusiastic reviews, and it won the Tony Award for Best Play, the New York Drama Critics’ Circle Award, and the Pulitzer Prize for Drama. It was the first play to win all three of these major awards.

Miller died of hear failure at his home in Roxbury, Connecticut, on the evening of February 10, 2005, the 56th anniversary of the first performance of Death of a Salesman on Broadway.

After it was first staged, Death of a Salesman（）

A. achieved huge success

B. won the first Tony Award

C. was warmly welcomed by salesmen

D. was severely attacked by dramatists

已知一家上市公司的资金总量为5000万元，其中长期借款1000万元，年息100万元，手续费忽略不计；企业发行总面额为500万元的5年期债券，票面利率为10%，由于票面利率高于市场利率，故该批债券溢价8%出售，发行费率为3%；此外公司发行普通股2500万元，预计第1年的股利率为12%，以后每年增长1.5%，筹资费率为1.5%；发行优先股750万元，股利率固定为15%，筹资费率也是1.5%；公司未分配利润总额为292.5万元，该公司所得税率为40%。

该上市公司的加权平均资金成本为（）。

A．13.513%

B．10.828%

C．11.577%

D．12.486%

费正清在《美国与中国》中说：“在（中国古代的）大家庭里，每个孩子一生下来就陷在一个等级森严的亲属关系之中，……这些亲属关系不仅比西方的关系名义明确，区分精细，而且还附有按其地位而定的不容争辩的权利和义务。”与此密切相关的制度是（）

A.宗法制

B.分封制

C.世袭制

D.察举制

区消防大队对王某实施行政处罚，作出处罚决定前经市消防支队同意。做出处罚决定后，王某不服，向区公安分局申请行政复议，区公安分局维持原处罚决定。王某仍然不服，向人民法院提起行政诉讼，（）是被告。

A、区消防大队

B、区公安分局

C、市消防支队

D、市公安局