属于施工企业主营业务收入的是( )。A．建造(施工)合同收入 B．劳务销售收入 C

程序设计语言按其对计算机硬件的依赖程度，可分为（）。

A.机器语言

B.汇编语言

C.高级语言

D.编码语言

台湾李敖先生说：“我喊毛 * * 万岁，因为毛 * * 精神永放光芒！时代愈发展，我们愈加需要毛 * * 精神，毛 * * 的精神就是一个人，一个民族要活得顶天立地，他一扫千余年来吾民族文弱不武的积习，他一扫百余年来自卑奴性的固疾，他不为任何敌人所吓倒，倒是吓倒了一个又一个的敌人。毛 * * 的精神给了吾民族以灵魂，毛 * * 的精神就是我们民族的精神，我们喊毛 * * 万岁就是要呵护这种‘天行健，君子自强不息’”的灵魂。”李敖的核心观点是

A．毛 * * 思想应该是其个人思想，毛 * * 思想应该表达为毛 * * 的精神

B．毛 * * 的精神继承中华文明传统精华，可以引领我们民族走向复兴

C．毛 * * 的精神是我们民族的灵魂，所以，必须重喊“毛 * * 万岁”口号

D．毛 * * 的精神将是民族的绝对真理，世世代代继承下去才是唯一的选择

下图所示分别为显微镜和动、植物细胞的结构示意图．请分析回答：（在[]内填代号，在______上写文字，下同）

（1）显微镜中，起放大作用的结构包括______（填代号）．

（2）若显微镜视野中已经找到了观察物，欲使物像更清晰些，应调节[______]______．

（3）阴雨天光线较弱时，应选用图中[⑦]的______（“平”/“凹”）面镜．

（4）聪明的你一定知道，上图中______（填代号）是植物细胞．

（5）上图中，具有保护细胞、控制物质进出的结构是[______]______．

（6）甘甜怡口的甘蔗汁主要是从甘蔗细胞的[______]______中榨取出来的．

（7）将制作好的人的口腔上皮细胞的临时装片放在显微镜下观察，你会发现细胞核部位染色最______（“深”/“浅”）．

No one can fail to stand in awed ( 令人敬畏的 ) admiration of the great discoveries of history—Newton' s laws of motion; Kepler' s principles of planetary movement, Einstein' s general theory of relativity. Equally awe-inspiring are artistic creations in painting, theatre, music and literature, which have also been brought about by discovery through personal efforts.  What do these extraordinary achievements of well-known scientists and artists have to do with problem solving?

A great scientific discovery or a great work of art is surely the result of problem-solving activity. The solution to a problem, we are told, often comes to thinkers in a “flash of insight (顿悟) ”， although they may have been turning the problem over in their minds for some time. As a particular form of problem solving, these creative acts are based on the broad knowledge gained in the past, whether this be of the public" sort known to science, or of the "private" sort known to the artist.

Many creative thinkers state that they have completely devoted themselves to the subject matter of the problem, often over fairly long periods of time. Indeed, it would be strange if they had not done this. Nothing in such statements supports the idea that there is anything very different about the problem solving that leads to discoveries of the great contributions to the society. The act of discovery, even in the relatively predictable (可以预见的) sense that it occurs in everyday learning, involves (涉及) a “sudden insight” which changes the problem situation into a solution situation. As we have seen, everyday discovery also requires that the learner have the knowledge of the rules gained in the past, which is involved in the solution.

52. Newton, Kepler and Einstein are mentioned in the first paragraph to_______.

A. bring about the subject of the discussion        

B. explain that scientists are more creative

C. show the difference between science and arts

D. prove that arts require more personal efforts

53. While knowledge from the past plays an important role in their achievements, thinkers sometimes also depend on their______.

A. artistic tastes                    B. sudden insight

C. admiration of discoveries  D. scientific experiments

54. What does the underlined word “this” refer to?

A. Great contributions to the society            

B.  Long-time study of the subject matter.

C.  Various statements about problem solving.

D. Complete devotion to artistic creation.

55. We may conclude from the passage that ______.

A.it is more likely to make scientific and artistic discoveries in everyday learning.

B. a sudden insight and knowledge from the past are required in making discoveries

C. scientific discoveries or artistic creations are usually unpredictable in nature

D. knowledge of the rules in the past is often developed in the changes of situation

某股份公司拟在未来无限时期每年支付每股股利4元，相应的贴现率(必要收益率)为5%，当时该公司股票价格为60元，试计算该公司股票的净现值和内部收益率，并对该股票的价格的高低作出判断。