高考英语一轮复习 Unit5 Nelson Mandela a modern hero阅读理解全方位训练3必修1

2014届高考英语一轮复习全方位配套训练人教版必修一Unit 5 Nelson Mandela--a modern hero 阅读理解3第Ⅲ组AAn experimentMaterials:Newspaper,‘ACE’ hardware ruler,a flat table.Purposes:We’ll show that there is air pressure pushing on us,from every direction while we’re on this earth.Procedure:First put a thin ruler on a flat table with a little less than half of it hanging off the edge of the table（see the drawing on the right).Next place a sheet of newspaper over the ruler flat against the table.Make sure to have as little air as possible under the paper so that the fold line of the newspaper is at the ruler.Then quickly strike the end of the ruler hanging off the edge of the table.If you strike it quick enough,the ruler will break near the table edge.What’s going on?The earth is covered in a layer of air that is nearly 80 miles thick and at sea level exerts or “pushes” hard almost 15 pounds of pressure per square inch.That means that a full sheet of newspaper laid out flat has nearly 9,300 pounds of air above it.When you break the ruler above,you are able to break it because of the “heavy” air pushing down on the paper while you quickly strike the ruler.At first,the table is pushing back on the paper,and if you move the ruler quickl enough,other air around the edges of the paper can’t get under the paper fast enough,so you are trying to lift that 9,300 pounds with the ruler! Some air gets under the paper,but not enough,so the ruler breaks.1.By doing the experiment,we may realize .A.that air exits everywhereB.why there are directionsC.that we live with air pressureD.how air helps on the earth2.How many steps are there in this experiment?A.2.B.3.C.4.D.5.3.The underlined word “exerts” probably means “”.A.covers completelyB.advocates activelyC.influences graduallyD.presses heavily4.The ruler breaks under a quick strike mainly because of .A.the air pressure on the newspaperB.the heavy weight of the newspaperC.the heavy weight of the flat tableD.the strong power used on the ruler 答案：1.C 细节理解题。

文章Purposes部分直接点明了做这个实验的目的：证明在我们生活的这个地球上，处处都有气压，由此判断选C。

2.B 细节理解题。

从Procedure中的First,Next和Then可知这个实验一共三步，首先将一把很薄的尺子放在桌子上，大约一半的尺子悬在桌子外沿，然后将一张旧报纸盖在桌子上，并尽量确保报纸下面的空气很少，最后使劲打击尺子悬空的那头，如果速度足够快，那么尺子就会在沿着桌子的地方被打断。

3.D 词义猜测题。

画线词处表示，在海平面每平方英寸上面就有大约15英磅的气压，再结合or后面的“pushes” hard可知，画线词的意思和D项最接近。

4.A 推理判断题。

最后一段解释在使劲敲打尺子悬空的那头时它会断裂的原因——报纸表面的气压非常大。

BOpen Letter to an EditorI had an interesting conversation with a reporter recently—one who works for you.In fact, he’s one of your best reporters.He wants to leave.Your reporter gave me a copy of his resume（简历）and photocopies of six stories that he wrote for you.The headlines showed you played them proudly.With great enthusiasm,he talked about how he finds issues（问题），approaches them,and writes about them,which tells me he is one of your best.I’m sure you would hate to lose him.Surprisingly,your reporter is not unhappy.In fact,he told me he really likes his job.He has a great assignment（分工），and said you run a great paper.It would beeasy for you to keep him,he said.He knows that the paper values him.He appreciates the responsibility you’ve given him,takes ownership of his profession,and enjoys his freedom.So why is he looking for a way out?He talked to me because he wants his editors to demand so much more of him.He wants to be pushed,challenged,coached to new heights.The reporter believes that good stories spring from good questions,but his editors usually ask how long the story will be,when it will be in,where it can play,and what the budget is.He longs for conversations with an editor who will help him turn his good ideas into great ones.He wants someone to get excited about what he’s doing and to help him turn his story idea upside down and inside out,exploring the best ways to report it.He wants to be more valuable for your paper.That’s what you want for him,too,isn’t it?So your reporter has set me thinking.Our best hope in keeping our best reporters,copy editors,photographers,artists —everyone—is to work harder to make sure they get the help they are demanding to reach their potential.If we can’t do it,they’ll find someone who can.5.What does the writer think of the reporter?A.Optimistic.B.Imaginative.C.Ambitious.D.Proud.6.What does the reporter want most from his editors in their talks?A.Finding the news value of his stories.B.Giving him financial support.C.Helping him to find issues.D.Improving his good ideas.7.Who probably wrote the letter?A.An editor.B.An artist.C.A reporter.D.A reader.8.The letter aims to remind editors that they should .A.keep their best reporters at all costsB.give more freedom to their reportersC.be aware of their reporters’ professional developmentD.appreciate their reporters’ working styles and attitudes答案：5.C 推理判断题。