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问题 选择题

下列事件不是随机事件的是（　　）

A．东边日出西边雨

B．下雪不冷化雪冷

C．清明时节雨纷纷

D．梅子黄时日日晴

答案

“下雪不冷化雪冷”为必然事件，故不是随机事件；

A、C、D选项中的事件均为可能发生也可能不发生的事件，是随机事件

故选B

单项选择题

Proper arrangement of classroom space is important to encouraging interaction. Most of us have noticed how important physical setting is to efficiency and comfort in our work. College classroom space should be designed to encourage the activity of critical thinking. We may be approaching the twenty-first century, but step into almost any college classroom and you step back in time at least a hundred years. Desks are normally in straight rows, so students can clearly see the teacher but not all their classmates. The assumption behind such an arrangement is obvious. Everything of importance comes from the teacher.
With a little imagination and effort, unless desks are fixed to the floor, the teacher can correct this situation and create space that encourages interchange among students. In small or standard-size classes, chairs, desks, and tables can be arranged in a variety of ways. The primary goal should be for everyone to be able to see everyone else. Larger classes, particularly those held in lecture halls, unfortunately, allow much less flexibility.
Arrangement of the classroom should also make it easy to divide students into small groups for discussion or problem-solving exercises. Small classes with movable desks and tables present no problem. Even in large lecture halls, it is possible for students to turn around and form groups of four to six. Breaking a class into small groups provides more opportunities for students to interact with each other, think out loud, and see how other students’ thinking processes operate all essential elements in developing new modes of critical thinking. In courses that regularly use a small group format, students might be asked to stay in the same small groups throughout the course. A colleague of mine, John, allows students to move around during the first two weeks, until they find a group they are comfortable with. John then asks them to stay in the same seat, with the same group, from that time on. This not only creates a comfortable setting for interaction but helps him learn students’ names and faces.

The greatest advantage in allowing each student to find his own group might be that ______.

A. the teacher saves the trouble in doing that
B. learning is made comfortable in this way
C. the teacher can easily remember students’ names and faces
D. brighter students can help slower ones
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单项选择题

根据我国《中外合作经营企业法》的规定，合作企业的资产抵押必须由( )方可做出决议。

A．董事会全体董事一致通过

B．出席董事会议的董事一致通过

C．全体董事的2／3以上通过

D．全体董事的1／2以上通过
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