在双绞线的组网方式中，以太网的中心连接设备是　【9】　 。

E

任务型读写

Directions : Read the following text and choose the most suitable heading from A---E for each paragraph. 

A. Classroom participation

B. Differences in American university education

C. Examination system

D. Competition among students

E. Honest policy in students' school work

F. (AB) Students' responsibility for learning

56                

There is considerable variety in university classrooms in the United States. Because of diverse teaching methods and non-standardized curricula (课程), no two courses are the same.    Undergraduate courses are considerable different from graduate courses. The classroom atmosphere in expensive, private universities may differ from that in community colleges， which are free and open to everyone.

57                

Participation in the classroom is not only accepted but also expected of the student in many courses. Some professors base part of the final grade on the student's oral participation. Although there are formal lectures during which the student has a passive role (i.e., listening and taking notes), many courses are organized around classroom discussions, student questions, and informal lectures.

58                

Many teachers believe that the responsibility for learning lies with the student. (Courses are not designed merely for students to pass exams.) The ideal student is considered to be one who is motivated to learn for the sake of learning, not the one interested only in getting high grades.

59                

Ideally, the teacher-student relationship at universities is characterized by trust. Thus, cheating on tests, Plagiarizing (抄袭) in written work, presenting other's ideas as original, and turning in homework completed by someone else are all prohibited (禁止).

60                 

Relationships between students in the classroom can be cooperative or competitive. International students should not hesitate to ask for help if it is needed. in classes where such a grading curve is used, students may be reluctant to share lecture notes or information for fear that their own grades will suffer.

乙型肝炎病毒属于肠道病毒72型的RNA病毒。

“标的物”条款就是合同的( )。

A．品名条款

B．品质条款

C．数量条款

D．包装条款

一般不采用单独粉碎的是（）

A.贵重细料药

B.树脂树胶类

C.毒性药

D.氧化性或还原性强的药

E.含大量油脂性药料

Text 1 Warum antwortet Fritz nicht ( 7P )Im Deutschunterricht konjugieren die Schüler: Ich lerne flei ig.“ Alle machen diese Aufgabe. Sie schreiben: ich lerne flei ig; du lernst flei ig; er (sie, es) lernt flei ig; wir lernen flei ig; ihr lernt flei ig; sie (Sie) lernen flei ig.Alle Schüler schreiben 6 S tze. Fritz schreibt aber nur einen Satz. Er ist schon fertig. Der Lehrer sieht das, nimmt das Heft und liest: Alle lernen flei ig.“ Der Lehrer fragt Fritz: Warum schreibst du nur einen Satz “ Aber Fritz antwortet nicht. Na“, sagt der Lehrer, Ist die Frage schwer “ – Die Frage nicht ... aber die Antwort ... !“Richtig oder falsch ( 7.5P)

Der Lehrer fragt ihn, aber er antwortet nicht sofort.