问题
选择题
有关岩石圈的叙述，错误的是[ ]
A、岩石圈并不是完整一块
B、平均厚度为33km的岩石外壳
C、地壳和上地幔顶部，是由岩石组成的，合称岩石圈
D、地面和软流层之间各类岩石的总称
答案
答案：B
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有关岩石圈的叙述，错误的是[ ]
A、岩石圈并不是完整一块
B、平均厚度为33km的岩石外壳
C、地壳和上地幔顶部，是由岩石组成的，合称岩石圈
D、地面和软流层之间各类岩石的总称
答案：B
根据短文内容,从下框的A-F 选项中选出能概括每一段主题的最佳选项.选项有一项为多余项。
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.
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.
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.
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).
Relationships between students in the classroom can be cooperative or competitive. International |