从所给的四个选项中，选择最符合左侧图形规律的一项

差动继电器的短路线圈的匝数所选取的抽头是否合适，应在保护投入时，通过变压器（）来确定。

关于白细胞计数方法和生理性变化的叙述，错误的是（）

A.血液分析仪的白细胞计数精密度较显微镜法好

B.运动，疼痛和情绪激动可使白细胞数增高

C.吸烟者平均白细胞计数低于非吸烟者

D.休息时低，运动后高

E.一日之间的最高值与最低值之间可相差1倍

Passage Two

Science is a dominant theme in our culture. Since it touches almost every facet of our life, educated people need at least some acquaintance with its structure and operation. They should also have an understanding of the subculture in which scientists live and the kinds of people they are. An understanding of general characteristics of science as well as specific scientific concepts is easier to attain if one knows something about the things that excite and frustrate the scientist.

This book is written for the intelligent student of lay person whose acquaintance with science is superficial; for the person who has been presented with science as a musty storehouse of dried facts; for the person who has been presented with science as the production of gadgets; and for the person who views the scientists as some sort of magician. The book can be used to supplement a course in any science, to accompany any course that attempts to give an understanding of the modern world, or independently of any course—simply to provide a better understanding of science. We hope this book will lead readers to a broader perspective on scientific attitudes and a more realistic view of what science is, who scientists are, and what they do. It will give them an awareness and understanding of the relationship between science and our culture and an appreciation of the roles science may play in our culture. In addition, readers may learn to appreciate the relationship between scientific views and some of the values and philosophies that are pervasive in our culture.

We have tried to present in this book an accurate and up-to-date picture of the scientific community and the people who populated it. That population has in recent years come to comprise more and more women. This increasing role of women in the scientific subculture is not a unique incident but, rather, part of the trend evident in all segments of society as more women enter traditionally male-dominated fields and make significant contributions. In discussing these changes and contribution, however, we are faced with a language that is implicitly sexist, one that uses male nouns or pronouns in referring to unspecified individuals. To offset this built-in bias, we have adopted the policy of using plural nouns and pronouns whenever possible and, when absolutely necessary, alternating he and she. This policy is far from being ideal, but it is at least an acknowledgment of the inadequacy of our language in treating half of the human equally.

We have also tried to make the book entertaining as well as informative. Our approach is usually informal. We feel, as do many other scientists, that we shouldn’t take ourselves too seriously. As the reader may observe, we see science as a delightful pastime than as a grim and dreary way to earn a living.

The book mentioned in this passage is written for readers who （）.

A．long for deeper understanding of science

B．are good at producing various gadgets

C．work in a storehouse of dried facts

D．are interested in popular science

女性患者，50岁，因“眼干、口干伴双手关节疼痛 1年余”来诊。查体：牙齿脱落，舌干无苔，右腮腺肿大，轻压痛，双手指间关节略肿胀、无畸形，活动不受限。

该患者化验RF阴性，CRP18mg/L，血常规白细胞2.9×10⁹/L，血小板79×10⁹/ L，尿常规pH7.0，手部X线片未见异常，可能的诊断是

A．类风湿关节炎
B．干燥综合征
C．血清阴性脊柱关节病
D．系统性红斑狼疮
E．特发性血小板减少性紫癜

对于先天性心脏病患者的术前评估，以下哪一个影响不考虑（）

A．直接由于心脏畸形所致的原发性血流动力学的影响

B．发绀程度

C．心脏扩大和肥厚的程度

D．对肺血管床的继发性影响

E．心电图的继发改变