科学家发现大洋底部的裂陷扩展从来没有停止过。这个发现可能会解_爱下问搜题

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问题单项选择题

科学家发现大洋底部的裂陷扩展从来没有停止过。这个发现可能会解答一个曾引起人们关注的问题。地球每天的时间都比前一天延长1／700秒，即每过一年，一天要延长0．5秒，据此预测，再过2亿年，一年将只有250天了。

对“一个曾引起人们关注的问题”的“解答”，最准确的是（）。

A.大洋底部裂陷扩展，地球运行时间延长

B.大洋底部裂陷扩展，地球运行时间缩短

C.大洋底部裂陷扩展，地球自转速度减慢

D.大洋底部裂陷扩展，地球自转速度加快

答案

参考答案：C

解析：

地球每天的时间都比前一天延长1／700秒”是对“一个曾引起人们关注的问题”的说明，只要理解了这一句话，便可得出正确答案。地球一天即自转一周的时间，每天的时间都比前一天延长，而时间与速度成反比，时间延长，说明地球转动的速度减慢了，所以这个“人们关注的问题”就是地球自转速度减慢；因此正确答案为C。D项与C项意思相对，显然错误。材料中并未涉及“地球运行时间”的问题，故A、B两项不选。

完形填空

School was over and I was both mentally and physically tired. I sat at the very front of the bus because of my   16 to get home. Sitting at the front makes you 17 out like a shiny coin in a pile of dull pennies.
Janie, the driver, tries to break the 18 atmosphere by striking the match of   194 .
I try to mind my manners and   20 listen, but usually I am too busy thinking about my day. On this day,   21 , her conversation was worth listening to.
“My father's sick,” she said to no one in 22 . I could see the anxiety and fear in her eyes. With a sudden change of attitude and interest, I asked,“What's wrong with him?"
With her eyes wet and her voice tight from 23 the tears, she responded,“Heart trouble.”Her eyes lowered as she 24 . “I've already lost my mum, so I don't think I can stand losing him.”
I couldn't respond. I was 25 . My heart ached for her. I sat on the old, smelly seat thinking of the great 26 my own mother was thrown into when her father died. I saw how hard it was,   27 still is, for her. I wouldn't like anyone to go 28 that.
Suddenly I realized Janie wasn't only a bus driver. That was 29 her job. She had a whole world of family and concerns too. I had never thought of her as 30 but a driver.
I suddenly felt very 31 . I realized I had only thought of people as 32 as what their purposes were in my life. I paid no attention to Janie because she was a bus driver. I had judged her by her job and brushed her off as 33 .
For all I know, I'm just another person in 34 else's world, and may not even be important. I 35 not have been so selfish and self-centered. Everyone has places to go, people to see and appointments (约会) to keep. Understanding people is an art.

B．determination

B．uncomfortable

D．unforgettable

C．conversation

D．disappointment

B．embarrassed

C．unnecessary

D．unimportant

问答题案例分析题

李华是一个十分聪明的学生，他的最大特点就是贪玩，学习不用功。每次考试他都有侥幸心理，希望能够靠运气过关。这次期末考试他考得不理想，他认为这次是自己的运气太差了。

请运用维纳的归因理论来分析：

（1）他的这种归因是否正确？这种归因对他以后的学习会产生怎样的影响？

（2）如不正确，正确的归因应是怎样的？

（3）对教师来讲，正确掌握维纳归因理论有何意义？