土地证书由土地管理部门填写，并代表( )颁发。A．县级以上土地管理部门 B．县级以上

该病最常损害的部位是

A．T_1～2

B．T_2～3

C．T_3～5

D．T_5～6

E．T_6～7

肺脓肿多发于下列哪些类型肺癌（）

A.鳞癌

B.腺癌

C.细支气管肺泡癌

D.小细胞癌

E.大细胞未分化癌

维生素C注射液
葡萄糖输液
无菌室空气
右旋糖酐注射液

A、火焰灭菌法

B、干热空气灭菌

C、流通蒸汽灭菌

D、热压灭菌

E、紫外线灭菌

临床上常用作诱导麻醉的药物是

A．氧化亚氮
B．丁卡因
C．利多卡因
D．硫喷妥钠
E．氟烷

Normally a student must attend a certain number of courses in order to graduate, and each course which he attends gives him a credit (学分) which he may count towards a degree. In many American universities the total work for a degree consists of thirty-six courses each lasting for one semester (学期). A typical course consists of three classes per week for fifteen weeks; while attending a university a student will probably take four or five courses during each semester. Normally a student would expect to take four years attending two semesters each year. It is possible to spread the period of work for the degree over a longer period. It is also possible for a student to move between one university and another during his degree course, though this is not in fact done as a regular practice.

For every course that he follows, a student is given a grade, which is recorded, and the record is available for the student to show to prospective(预期的) employers. All this imposes a constant pressure and strain of work, but in spite of this some students still find time for great activity in student affairs. Elections to positions in student organizations arouse much enthusiasm (热情). The effective work of maintaining discipline is usually performed by students who advise the academic authorities (权威). Any student who is thought to have broken rules, for example, by cheating has to appear before a student court. With the enormous numbers of students, the operation of the system does involve a certain amount of activity. A student who has held one of these positions of authority is much respected and it will be of benefit to him later in his career.

72. Normally a student would at least attend ______ classes per week.

A. 36      B. 12     C. 20       D.15

73. According to the first passage an American student is allowed ______.

A. to live in a different university

B. to take a particular course in a different university

C. to live at home and drive to classes

D. to get two degrees from two different universities

74. American students are usually under pressure of work because ______.

A. their academic performance will affect their future careers

B. they are heavily involved in student affairs

C. they have to observe university discipline

D. they want to run for positions of authoring

75. Some students are enthusiastic for positions in student organizations probably because_____.

A. they hate the constant pressure and strain of their study

B. they will then be able to stay longer in the university

C. such positions help them get better jobs

D. such positions are usually well paid