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问题 单项选择题 A1/A2型题

神经细胞在产生动作电位时，去极相的变化方向同下列哪种电位的变化方向一致（）。

A.K+的平衡电位

B.Na+与Cl-的平衡电位

C.Na+的平衡电位

D.K+与Cl-的平衡电位

E.有机负离子A-的平衡电位

答案

参考答案：C

完形填空

语法填空（共10小题；每小题1分，满分10分）

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空格处填入一个适当的词或使用括号中词语的正确形式填空，并将答案填写在答题卷标号为51~ 60的相应位置上。

“ ‘But man is not made for defeat (战胜),’ ” he said. “ ‘A man can be destroyed   51   not defeated.’ ” This quotation is from The Old Man and the Sea by Ernest Hemingway. The story   52  (concern) with a man who is a skilled fisherman in a village by the Gulf Stream. He has been struck with bad luck   53   the past eighty-four days, and hasn’t caught a single fish. Many younger fishermen said that it was bad luck and   54   he did not have the ability to fish at his age,   55   the man tried to prove himself to   56   by trying to catch a huge fish in the sea. The main character of this story is an old fisherman   57   (name) Santiago. The setting (背景) of this story is Cuba, in the Gulf Stream. Santiago’s strength and strong will are what   58   (courage) him to explore his talents and to disprove to the younger fishermen   59   doubts about him. This story   60   shows man’s courage in the face of defeat.
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单项选择题

每股盈余最大化相对于利润最大化作为财务管理目标，其优点是：

A．考虑了货币的时间价值

B．考虑了投资的风险价值

C．反映了投资风险与收益的对比关系

D．反映了投入资本与收益的对比关系
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