皮样囊肿（畸胎瘤），典型的声像图特征为（）。 A.囊性肿块 B.囊性和实质性肿块 C

前药修饰在药物研究开发中的主要用途有

A．增加药物溶解度

B．改善药物吸收和分布

C．增加药物的化学稳定性

D．减低毒性或不良反应

E．延长药物的作用时间

Recently a Beijing father sent in a question at an Internet forum (论坛) asking what "PK" meant.

"My family has been watching the 'Super Girl' singing competition TV program. My little daughter asked me what 'PK' meant, but I had no idea," explained the puzzled father.

To a lot of Chinese young people who have been playing games online, it is impossible not to know this term. In such Internet games, "PK" is short for "Player Kill", in which two players fight until one ends the life of the other.

In the case of the "Super Girl" singing competition, "PK" was used to refer to the stage where two singers have to compete with each other for only one chance to go up in competition ranking.

Like this father, Chinese teachers at high schools have also been finding their students' compositions using Internet jargons which are difficult to understand. A high school teacher from Tianjin asked her students to write compositions with simple language, but they came up with a lot of Internet jargons that she didn't understand.

"My 'GG' came back this summer from college. He told me I've grown up to be a 'PLMM'. I loved to 'FB' with him together; he always took me to the 'KPM'," went one composition. "GG" means Ge Ge (Chinese pinyin for brother). "PLMM" refers to Piao Liang Mei Mei (beautiful girl). "FB" means Fu Bai (corruption). "KPM" is short for KFC, Pizza Hut and McDonald's.

Some specialists welcome Internet jargons as a new development in language.

If you do not even know what a Kong Long (dinosaur, referring to an ugly looking female) or a Qing Wa (frog, referring to an ugly looking male) is, you will possibly be regarded as a Cai Niao!

45. By writing the article, the writer tries to  ________ .

A. explain some Internet language          B. suggest common Internet language

C. laugh at the Beijing father               D. draw our attention to Internet language

46. What does the writer think about the term "PK"?

A. Fathers can't possibly know it.          B. The daughter should understand it.

C. Online game players may know it.       D. "Super Girl" shouldn't have used it.

47. The examples of the Beijing father and the Tianjin teacher are used to show that Internet jargons ________ .

A. are used not only online                   B. can be understood very well

C. are welcomed by all the people          D. cause trouble to our mother tongue

48. The underlined word "jargons" means " ________ " in Chinese.

A. 行话               B. 粗口              C. 歌词               D. 趋势

山东省主要工业部门有[ ]

A．能源、化学、机电、纺织、建材、食品

B．能源、电子、机电、服装、建材、食品

C．能源、化学、机电、放在、钢铁、精密仪表

D．能源、化学、机电、畜产品、建材、食品

违反社会公德，但未造成严重影响的人可以参加旅行社经理资格考试。

重要与建筑与高层建筑的耐久年限为（）年。