What makes a person a scientist?Does he have ways or tools of learning that are different from those of others?The answer is “no”. It isn’t the tools a scientist uses but how he uses these tools which make him a scientist. You will probably agree that knowing how to use a power is important to a carpenter(木匠).You will probably agree,too,that knowing how to investigate(调查),how to discover information,is important to everyone. The scientist,however,goes one step further;he must be sure that he has a reasonable answer to his questions and that his answer he gets to many questions is into a large set of ideas about how the world works.
The scientist’s knowledge must be exact. There’s no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different,any changes the scientist observes in a demonstration(实证)must be explained by the changes in the conditions. This is one reason why investigations are important in science. Albert Einstein,who developed the Theory of Relativity,arrived at this theory through mathematics. The accuracy(正确性)of his mathematics was later tested through investigation. Einstein’s ideas were proved to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations(计算)that may test his investigations.
1.What makes a scientist according to the passage?
A. The tools he uses. B. His ways of learning.
C. The way he uses his tools. D. The various tools he uses.
2.“...knowing how to investigate,how to discover information,is important to everyone.” The writer says this to show_______.
A. the importance of information
B. the difference between scientists and ordinary people
C. the importance of thinking
D. the difference between carpenters and ordinary people
3. A sound(合理的) scientific theory should be one that_______.
A. works under one set of conditions at one time and also works under the same conditions at other times
B. doesn’t allow any change even under different conditions
C. leave no room for improvement.
D. can be used for many purposes
4.What is the main idea of the passage?
A. Scientists are different from ordinary people.
B. The Theory of Relativity.
C. Exactness is the core(核心)of science.
D. Exactness and way of using tools are the keys to making of a scientist.
Newspapers in Great Britain vary greatly in their ways of carrying the news. There are serious papers for those who want to know about important happenings everywhere, both at home and abroad. There are popular newspapers for those who prefer entertainment to information.
The London newspaper that is best known outside Great Britain is probably the Times. It began in 1785, and is well accepted for believable news and serious opinions on the news. It calls itself an independent paper, which means that it does not give its support to a particular political party. Its leading articles give the opinions of the editors, not those of the owners of the paper.
Letters to the editor are printed in the newspaper. These parts of the Times are always interesting. Most of the letters are serious subjects. But from time to time there will be long letters on the subject which is not at all serious, perhaps on a new fashion of dress, or the bad manners of the young people, compared with manners of thirty years ago.
1. If you want to get pleasure, please buy yourself .
A. a serious newspaper B. foreign newspaper
C. any independent paper D. a popular newspaper
2.The Times is an independent paper because .
A. it supports no political parties zxxk
B. it is not controlled by the British Government
C. it gives special support to all the political parties.
D. the editor’s opinions are not examined by the owners of the paper
3. The underlined word “vary” in the passage probably means “ ”.
A. improve B. compete with each other
C. are different D. keep in touch with each other
Recently,I flew to Las Vegas to attend a meeting. As we were about to arrive,the pilot announced with apology that there would be a slight before setting down. High desert winds had the airport to close all but one runway. He said that we would be the city for a few minutes waiting to . We were also told to remain in our seats meanwhile(同时) with our seat belts fastened there might be a few bumps(颠簸).Well,that few minutes turned into about four—five minutes,including a ride that would make a roller coaster(过山车) by comparison(比较起来).
The movement was so fierce(猛烈的) that several passengers felt and had to use airsickness(晕机) bags. As you might guess,that’s not good thing to have happen in a(n) space because it only to increase the discomfort of the situation.
About twenty minutes into the adventure,the entire airplane became very .
There was now a sense of anxiety and fear that could be noticed.Every passenger simply held on for dear life …except one. A was having a good time! With each bump of the__ ___he would let out a giggle(咯咯的笑)of delight. As I observed this,I that he didn’t know he was supposed to be afraid and worried about his .He neither thought about the past nor about the future .Those are what we grown—ups have learned from .He was the ride because had not yet been taught to fear it. Having understood this,I took a deep breath and back into my seat,pretending(假装) I was on a roller coaster. I smiled for the rest of the flight. I even to giggle once or twice ,much to the chagrin(懊恼)of the man sitting next to me holding the airsickness bag.
1.A. mistake B. delay(延期) C. change D. wind
2.A. forced B. warned C. swept D. reminded
3.A. watching B. visiting C. circling D. crossing
4.A. arrive B. enter C. stop D. land
5.A. if B. though C. because D. while
6.A. light B. pale C. difficult D. quick
7.A. sick B. nervous C. a ngry D. afraid
8.A. empty B. narrow C. secret D. open
9.A. happens B. continues C. fails D. serves
10.A. quiet B. hot C. dirty D. crowded
11.A. partly B. gradually C. shortly(立刻) D. clearly
12.A. pilot B. baby C. guard D. man
13.A. seats B. passengers C. flight D. airplane
14.A. realized B. hoped C. agreed D. insisted
15.A. health B. safety C. joy D. wealth
16.A. teachers B. books C. experience D. friends
17.A. learning B. taking C. missing D. enjoying
18.A. sat B. jumped C. went D. rode
19.A. nearly B. finally C. really D. suddenly
20.A. attempted B. managed C. wanted D. decided
You did not let me drive. If we ____in turn, you wouldn’t be so tired now.
A. drive B. drove C. were driving D. had driven
News reports say peace talk between the two countries____ with no agreement reached.
A. have broken down B. have broken out
C. have broken in D. have broken up zxxk
Little ________ about her own safety, though she was in great danger herself.
A. did Rose care B. Rose did care C. Rose does care D. does Rose care