We can never expect bluer sky unless we create less polluted world.
A. a; a B. a; the C. the; a D. the; the
智趣寒假作業云南科技出版社系列答案科目：高中英語 來源： 題型：
We can never expect____ bluer sky unless we create_____less polluted world.
A. a; a B. a; the
C. the; a D. the; the
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科目：高中英語 來源： 題型：
The shop manager always says to his assistants, "We can never be ______customers.
A. so B. too C. that D. more
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科目：高中英語 來源： 題型：閱讀理解
Early one morning,more than a hundred years ago,an American inventor called Elias Howe finally fell asleep.He had been working all night on the design of a sewing machine but he had run into a very difficult problem: It seemed impossible to get the thread to run smoothly around the needle.
Though he was tired,Howe slept badly.He turned and turned.Then he had a dream.He dreamt that he had been caught by terrible savages whose king wanted to kill him and eat him unless he could build a perfect sewing machine.When he tried to do so,Howe ran into the same problem as before.The thread kept getting caught around the needle.The king flew into the cage and ordered his soldiers to kill Howe.They came up towards him with their spears raised.But suddenly the inventor noticed something.There was a hole in the tip of each spear.The inventor awoke from the dream,realizing that he had just found the answer to the problem.Instead of trying to get the thread to run around the needle,he should make it run through a small hole in the center of the needle.This was the simple idea that finally made Howe design and build the first really practical sewing machine.
Elias Howe was not the only one in finding the answer to his problem in this way.Thomas Edison,the inventor of the electric light,said his best ideas came into him in dreams.So did the great physicist Albert Einstein.Charlotte Bronte also drew in her dreams in writing ?Jane Eyre.?
To know the value of dreams,you have to understand what happens when you are asleep.Even then,a part of your mind is still working.This unconscious(無意識的),but still active part understands your experiences and goes to work on the problems you have had during the day.It stores all sorts of information that you may have forgotten or never have really noticed.It is only when you fall asleep that this part of the brain can send messages to the part you use when you are awake.However,the unconscious part acts in a special way.It uses strange images which the conscious part may not understand at first.This is why dreams are sometimes called “secret messages to ourselves ”.
According to the passage,Elias Howe was_________.
A.the first person we know of who solved problems in his sleep
B.much more hard-working than other inventors
C.the first person to design a sewing machine that really worked
D.the only person at the time who knew the value of dreams
The problem Howe was trying to solve was_________.
A.what kind of thread to use
B.how to design a needle which would not break
C.where to put the needle
D.how to prevent the thread from getting caught around the needle
Thomas Edison is spoken of because_________.
A.he also tried to invent a sewing machine
B.he got some of his ideas from dreams
C.he was one of Howe's best friends
D.he also had difficulty in falling asleep
Dreams are sometimes called “secret messages to ourselves” because _________.
A.strange images are used to communicate ideas
B.images which have no meaning are used
C.we can never understand the real meaning
D.only specially trained people can understand them
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科目：高中英語 來源：2015屆安徽淮北師大附屬實驗中學高二上期中考試英語試卷（解析版） 題型：單項填空
We can never forget the days _______the two astronauts in spaceship worked together and the days _______we spent together.
A. which; when B. when; which C. what; that D. on which; when
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科目：高中英語 來源：2014屆江蘇省高二上學期中考試英語試卷（解析版） 題型：單項填空
We can never expect ______ bluer sky unless we stop ______ industrial waste going into _____ atmosphere.
A．a; the; the B．the; the; the C．a; /; the D．the; /; /
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