阅读下面短文, 根据所读内容在表格中的空白处填入恰当的单词。
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The word science is heard so often in modern times that almost everybody has an idea of its meaning.
However, its definition is difficult for many people. The meaning of the term is confusing, but everyone
should understand its meaning and objectives (目标). Just to make the explanation as simple as possible,
suppose science is defined as classified knowledge or facts.
Even in the true science, distinguishing fact from fiction is not always easy. For this reason great care
should be taken to distinguish between beliefs and truths. There is no danger as long as a clear difference
is made between temporary and proved explanations. For example, hypotheses(假设) and theories are
attempts to explain natural phenomena. From these positions the scientist continues to experiment and
observe until they are proved or discredited. The exact status of any explanation should be clearly
labeled to avoid confusion.
The objectives of science are primarily the discovery and later the understanding of the unknown.
Man cannot be satisfied with recognizing that secrets existing in nature of those questions are
unanswerable; he must solve them. Toward that end, specialists in the field of biology and related fields
of interest are directing much of their time and energy.
Actually, two basic approaches lead to the discovery of new information. One, aimed at satisfying
curiosity, is referred to as pure science. Sometimes practicalminded people miss the point of pure science
in thinking only of its immediate application for economic rewards. However, one should remember that
the construction of the microscope had to come before the discovery of the cell. The scientists devoting
their lives to pure science are not apologetic about ignoring the practical side of their discoveries; they
know from experience that most knowledge is eventually applied.
The other is aimed at using knowledge for specific purposes-for instance, improving health, raising
standards of living, or creating new consumer products. In this case knowledge is put to economic use.
Such an approach is referred to as applied science.
| The 1.________ of science | | | 2.________ of science | | ● To define science, we may 3.________
call it classified knowledge or facts. | | ● It is essential, though not 4.________,
for us to distinguish fact from fiction. | | | Objectives of science | Science is 5.________ at discovering and
understanding the unknown. | | Two basic 6. ________ to new discovery | | | Pure science | Scientists, who may be blamed for 7.________ the practical
side of their work, make discoveries out of 8.________. | | 9.________science | Knowledge is put to economic 10.________, for example,
improving health, raising living standards and creating new
consumer products. | | 完形填空 | Although in 1947 we were still very new to the atomic (原子的) age, we knew about mushroom
clouds. A huge crack (裂缝) spread across the library wall upstairs, sending teachers and __1__
screaming down the hall.
Had a new world war started? Palefaced, our young science teacher quickly__2__us for a fire drill.
We huddled (卷缩) in little groups on the beach side of the school grounds and__3__the spreading
cloud darken the bright spring sky.
Rumors flew every which way,__4__two hours would pass before we got the full story. One rumor
we heard was that the Texas City Monsanto Chemical plant had__5__；children whose parents__6__
there began to cry.
I__7__-that was where my father was working that day.
The school bell called us back inside, and we were dismissed (解散) to__8__our way home the best
way we could. I"d walked a quarter of the threemile trip to my home__9__a car horn frightened me to
__10__. My Uncle Barney__11__alongside me in his old Ford. The instant I saw him, I knew my father
__12 _. Otherwise, Papa would have__13 _for me himself.
As if in slow motion from a great distance, Uncle Barney motioned for me to__14__. Numb with
grief, I crawled into the back__15__. I barely took notice of the man sitting there, and didn"t recognize
him until he__16__me. When Papa put his strong arms around me, I forgot for a moment that Cherokees
aren"t supposed to__17__.
Many of my fellow students lost their__18__in the explosion. Tragedy would one day come to our
__19__, as it inevitably (不可避免地) comes to all, but one day Texas City blew up, it miraculously
(奇迹般地) passed us by. Because he lost his keys on that April morning, as he explained, my father
lived for__20 _32 years-we were to have a second lifetime forever. | ( )1. A. headmaster
( )2. A. organized
( )3. A. heard
( )4. A. when
( )5. A. blown up
( )6. A. lived
( )7. A. smiled
( )8. A. make
( )9. A. when
( )10. A. decision
( )11. A. pulled up
( )12. A. was there
( )13. A. gone
( )14. A. get off
( )15. A. seat
( )16. A. looked at
( )17. A. cry
( )18. A. teachers
( )19. A. class
( )20. A. other | B. students
B. ordered
B. smelled
B. as
B. been closed
B. worked
B. frightened
B. feel
B. while
B. attention
B. pulled out
B. was here
B. come
B. get over
B. chair
B. helped
B. laugh
B. relatives
B. family
B. others | C. workers
C. made
C. watched
C. as if
C. been opened
C. studied
C. froze
C. push
C. as
C. feeling
C. pulled in
C. was gone
C. left
C. get through
C. stool
C. reached for
C. excite
C. friends
C. school
C. another | D. books
D. asked
D. felt
D. although
D. been on fire
D. visited
D. worried
D. find
D. for
D. expression
D. pulled off
D. was alone
D. stopped
D. get in
D. bag
D. called on
D. shout
D. parents
D. house
D. the other | | 完形填空 | Many language learners think their pronunciation is good enough because their teacher doesn"t correct
them too often or because other students can __1__ them.
Pronunciation is the area which is __2__ the least attention to in language learning. Most teachers
__3__ just let their students speak and stop them __4__ they say something completely wrong. Working
on each student"s pronunciation in class is just __5__. Also, the students who are __6__ at pronunciation may be afraid that it will embarrass their classmates if they help __7__ their mistakes.
If you believe your pronunciation is good enough to __8__ because it is good enough for your teacher and other students, you may be __9__ when you actually go to a foreign country. One of my friends was
the best student in his __10__ class in Poland. When he went to America, he found Americans didn"t
understand 11 of what he said.
Your pronunciation may still be quite __12__ that of a native speaker. If this is the __13__, other
people will find it __14__ to understand what you"re saying and will not be comfortable with you.
__15__, don"t think you can communicate in a foreign language __16__ you"ve tested your skills on real
native speakers. __17__ for native or nearnative pronunciation so that people you talk to can
communicate with you __18__. In order to achieve this goal, there"s __19__ that you will need to start
thinking about pronunciation and __20__ time on it. | ( )1. A. mistake
( )2. A. fixed
( )3. A. never
( )4. A. only if
( )5. A. fantastic
( )6. A. poor
( )7. A. find out
( )8. A. communicate
( )9. A. happy
( )10. A. Polish
( )11. A. none
( )12. A. near to
( )13. A. same
( )14. A. easy
( )15. A. In conclusion
( )16. A. when
( )17. A. Stand
( )18. A. smoothly
( )19. A. no way
( )20. A. take | B. watch
B. drawn
B. ever
B. if only
B. impossible
B. well
B. work out
B. travel
B. disappointed
B. French
B. half
B. different from
B. matter
B. beneficial
B. In a word
B. until
B. Look
B. difficultly
B. no need
B. cost | C. surround
C. paid
C. even
C. even if
C. necessary
C. good
C. try out
C. pronounce
C. surprised
C. German
C. rest
C. far from
C. case
C. convenient
C. On the contrary
C. unless
C. Aim
C. truly
C. no doubt
C. spend | D. understand
D. called
D. usually
D. if ever
D. important
D. strict
D. point out
D. exchange
D. excited
D. English
D. lot
D. from far
D. fact
D. hard
D. In short
D. while
D. Account
D. practically
D. no wonder
D. kill | | 阅读理解 | Even plants can run a fever, especially when they"re under attack by insects or disease. But unlike
human, plants can have their temperature taken from 3,000 feet away-straight up. A decade ago,
adopting the infrared(红外线)scanning technology developed for military purposes and other satellites,
physicist Stephen Paley came up with a quick way to take the temperature of crops to determine which
ones are under stress. The goal was to let farmers precisely target pesticide(***虫剂)spraying rather than
rain poison on a whole field, which invariably includes plants that don"t have pest problems.
Even better, Paley"s Remote Scanning Services Company could detect crop problems before they
became visible to the eye. Mounted on a plane flown at 3,000 feet at night, an infrared scanner measured
the heat emitted by crops. The data were transformed into a colourcoded map showing where plants
were running "fevers". Farmers could then spotspray, using 50 to 70 percent less pesticide than they
otherwise would.
The bad news is that Paley"s company closed down in 1984, after only three years. Farmers resisted
the new technology and longterm backers were hard to find. But with the renewed concern about
pesticides on produce, and refinements in infrared scanning, Paley hopes to get back into operation.
Agriculture experts have no doubt the technology works. "This technique can be used on 75 percent of
agricultural land in the United States, " says George Oerther of Texas A & M. Ray Jackson, who recently retired from the Department of Agriculture, thinks remote infrared crop scanning could be adopted by the end of the decade. But only if Paley finds the financial backing which he failed to obtain 10 years ago.
1. Plants will send out an increased amount of heat when they are________.
A. facing an infrared scanner
B. sprayed with pesticides
C. in poor physical condition
D. exposed to excessive sun rays
2. In order to apply pesticide spraying precisely, we can use infrared scanning to________.
A. estimate the damage to the crops
B. draw a colourcoded map
C. measure the size of the affected area
D. locate the problem area
3. Farmers can save a considerable amount of pesticide by________.
A. resorting to spotspraying
B. transforming poisoned rain
C. consulting infrared scanning experts
D. detecting crop problems at an early stage | 最新试题
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