问题 阅读理解

Now I’d like to talk to you about your final exam. The exam will be held next Thursday, the last day of the exam week. Remember to bring two or three pens in case you run out of ink. And unlike the midterm exam, this test will not include multiple-choice questions; it will consist (由…组成) entirely of essays (文章). You’ll have to answer three of the five essay questions. The exam will be comprehensive (理解性的), which means you’ll be responsible (负责) for all of the subject matters we covered in class this term. I would suggest you review your midterm exam as well as textbooks and your class notes. The research project will count as 20 percent and the midterm exam 30 percent. I’ll be in my office almost all day next Tuesday. If you run into any problems, please drop in. Gook luck to you and I’ll see you on Tuesday.

1 The final exam take place on a ____ .

A. Tuesday     B. Wednesday C. Thursday    D. Friday

2 What will be included in the exam?

A. There will be only multiple-choice questions.

B. The exam will contain both multiple-choice and essay questions.

C. The exam will have an oral and written section.

D. There will be only essay questions.

3 Why does the teacher call the exam comprehensive?

A. Because it will be easy to understand.

B. Because it will cover topics from a variety (多种多样) of subjects.

C. Because students will be tested on all the material discussed in class.

D. Because students must complete all parts of it.

4 The underlined phrase run into probably means ____ .

A. meet somebody unexpectedly   B. go into

C. come across (偶然遇见)   D. come up against something with force

答案

小题1:C

小题2:D

小题3:B

小题4:C

单项选择题

二、阅读下面文字,完成下面5个小题。

  全球现有活火山600多座,其活动程度可分为喷溢、喷发、爆发3个等级,火山爆发是极强烈的火山活动,范围更大的火山爆发则会给地球环境及生物造成大灾害。

  火山爆发除了直接灾害外,还可能引起区域性、全球性气候异常,带来其他自然灾害。1991年我国华东地区出现了百年不遇的特大洪水,专家们分析后认为:菲律宾皮纳图博火山爆发引起了亚洲广大地区天气异常,这可能是洪水爆发的主要原因之一。另据美国地质学家兰皮诺和考古学家安布罗斯考证,现印尼苏门答腊岛上的多巴火山,在7.1万年前曾有过一次极其强烈的爆发。那次火山爆发向大气层喷出了800 方千米的火山灰,使北半球1/3地区持续几个星期笼罩在黑暗之中;然后是长达6年的冬季效应,北半球可能是3/4的植物死亡;再后是长达千年的冰期。5万到7万年前的人口以及物种遗传变化的急剧减少,有可能是多巴火山大爆发造成的。不过,专家们又认为:像多巴火山这样强烈的爆发事件,在21世纪发生的可能性只有1/10000000,故此我们毋须过多担忧。

  1999年4月,美国《科学》杂志报道,加利福尼亚大学伯克利分校的伦尼等研究人员,通过对美国新泽西州到西非的环大西洋火山的研究,提出了“火山爆发形成大西洋”的假说,他们认为:两亿年前,地球上曾发生过一次迄今为止最强烈的火山爆发,从而使位于现在大西洋位置的原始泛大陆(古代大陆)分裂为几个大洲,并形成大西洋。他们估计:这次火山爆发产生了巨大的熔岩流,其覆盖面积达 700万平方千米,持续时间长达几百万年。这次火山爆发时间正好与三叠纪与侏罗纪的衔接相吻合,大约50%的海洋物种和一些爬行动物都遭到灭顶之灾,从而为后来恐龙的出现和兴盛创了条件。不过,这一假说尚未得到证实。

本文主要内容概括得正确的一项是()。

A.火山爆发的研究有了新的突破

B.人类历史上曾经有过两次大的火山爆发

C.火山爆发对地球有着严重的影响

D.21世纪发生火山爆发的可能性很小

单项选择题 B型题