下列物质形成的晶体中，其中任何一个原子都被相淋四个原子保卫，以共价键形成正面体，

下述哪项符合溃疡性结肠炎的典型临床表现（）

A.发热、便秘3个月，伴下腹痛、大便表面带血

B.间断右下腹痛4年，加重伴发热2个月

C.腹泻、左下腹痛6天，伴里急后重，口服利复星后有所好转

D.间断腹泻、脓血便3年，加重并便鲜血1个月，常伴里急后重

E.间断大便次数增多10年，精神紧张后加重，无便血，便前腹痛，便后缓解。服得舒特后缓解

第二节 信息匹配(共5小题；每小题2分，满分10分)

阅读下列应用文及相关信息，并按照要求匹配信息。请在答题卡上将对应题号的相应选项字母涂黑。

Harry, Tony, Collins, Jesse和Jack 几位同学欲提高学习成绩，故针对自己的情况上网找寻适合自己的学习方法与资料。

网页上信息:

A．Study Skills Self-help Information - Virginia Tech - Articles and self-assessment tests covering scheduling and time management, memory techniques, note-taking, reading, and setting up a good studying environment.

B．Academic Tips - Helping students manage time, take better notes, study more effectively, improve memory, take tests and handle the stresses of senior life.

C．Neuromod - Online Memory Improvement Course - It is possible to improve one's memory performance in specific areas by applying memory techniques. This site explains a number of systems ranging from simple to sophisticated. The training steps are clearly laid out and in most cases online training software is provided.

D．Studying Revising Exams - One-page summary of studying, examination, and writing techniques. A collection of articles about good study habits with how-to suggestions.E. Learning Skills - University of Victoria - Copyrighted e-books with tips on organizing notes, reading, time and study management, exam preparation and writing, writing assignments, and study strategies.

F. Study Guides  - Collection of academic study guides. Topics include classroom and study preparations; studying, writing and reading skills; math and science skills; evaluating and using web content; and preparing for tests. Authored, maintained, and revised by Joe Landsberger.

现在，根据他们的实际情况，进行信息匹配。

56. Tony wants to better himself by means of taking notes, time management and so on. He also feels like solving the problem of heavy pressure in study.

57. Harry wants to improve himself through the ways of time management, memory skills etc., especially he can check himself in time and can find himself better learning surroundings..

58. Jesse will find some suggestions on how to make notes and how to do his writing homework.

59. Collins focuses on his future exams, so he would like to get some instructions for his science study and use some materials on the Net.

60. Jack hopes to train himself systematically to keep what he learns in mind a longer time.

绿色开花植物的花的主要功能是[     ]

A．吸引昆虫

B．繁殖后代

C．分泌花蜜

D．产生香味

长江三角洲农耕条件优越，农业历史悠久，农业生产水平高，是举世闻名的（   ）

A．温带水果之乡

B．鱼米之乡和丝绸之乡

C．亚热带动植物王国

D．旅游胜地

加强水土流失，防治面源污染，禁止破坏（）。

A、生态保护区

B、江河源头区

C、水源涵养林

D、饮水水源地