Living things have a life cycle.They are born,grow,and die.Even though stars are not living things,they do have a life cycle.A star is born in a cloud of dust and gas.A young star is blue and very hot.A middle-aged star is yellow.It cools and becomes a red giant.Finally,the star explodes.The light of a star tells astronomers many things about the star.Annie Jump Cannon was an American astronomer who carefully classified(分級)stars by looking at their light.
Annie Jump Cannon was born in 1863.Her mother taught her about the constellations(星座)when she was a girl.Annie was interested in studying the stars when she grew up.But not many women went to college in those days.Also,Annie had an illness that caused her lost most of her hearing.But these things didn't stop Annie from earning two college degrees.
Cannon was hired to work at the Harvard College Observatory(天文臺).Astronomers there used telescopes and took photographs of the sky.It was an exciting new science.
The light from each star passed through a prism(棱鏡)in the telescope.A prism is a piece of cut glass.Light passing through a prism is separated into a rainbow.Cannon studied the photos of each band of colors.Almost all photos were black and white.She could not see the colors.She could only see different dark lines.She used them to classify stars from younger and very hot to older and cooler.
Annie Jump Cannon classified more than 300,000 stars!Her star catalog is still used by astronomers all over the world.During her lifetime,Cannon received many honors.In 1934,an award was named for her.The Annie J.Cannon Award in Astronomy is given every year.It is given to a woman astronomer from North America.
(1)A prism can AA.
A.separate light into colors
B.take a photograph
C.cut through glass
D.tell the age of a star
(2)What does the underlined word "them" in the fourth paragraph refer to? DD
A.Colors.
B.Prisms.
C.Photos.
D.Dark lines.
(3)Which of the following is NOT the description to Cannon? CC
A.She was nearly deaf.
B.She knew about stars.
C.She didn't go to college.
D.She worked carefully.
(4)What is the passage mainly about? CC
A.A report on science.
B.A report on astronomy.
C.An introduction to Annie Jump Cannon.
D.An introduction to the development of astronomy.
【答案】A;D;C;C
【解答】
【點評】
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發(fā)布:2024/4/20 14:35:0組卷:8引用:2難度:0.5
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1.There was once a man who built his own house.From top to bottom,he designed and built every inch of his home.It took him over a year,but in the end,he had a beautiful house of his own.No other house in his neighborhood looked like it so that many of his neighbors admired it.
But as time went by,his house started to have some problems.One day,a neighbor said,"Friend,it looks like your front yard is a bit overgrown."
The man replied, "Yes,I know.But it's okay.I'll cut the grass tomorrow."
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The man replied, "Yes,I know.But it's okay.I'll wash them tomorrow."
Weeks passed by.Finally,the man's brother came over to pay a visit.He took one look at his brother's house and couldn't believe what he saw.The yard was in a mess,the paint on the walls was falling down and the windows were covered with dirt.The house looked like it could fall apart at any second- all because the man didn't do anything until "tomorrow".
When we procrastinate","tomorrow" can turn into "next week"or even"next year".It's much better to just take care of things today than to wait until some imaginary "tomorrow" that might not actually come.
(1)Why did many neighbors admire the man's house?
A.Because he spent more than a year building his house.
B.Because his house looked uncommon in the neighborhood.
C.Because the grass in the man's yard grew well.
D.Because the paint on the wall was beautiful and colorful.
(2)According to the passage,which is the right order of the following events?
a.The house was in a mess everywhere.
b.The man built his house on his own.
c.A mailman found the window was dirty.
d.The front yard was a bit overgrown.
A.d-b-c-a
B.b-c-a-d
C.b-c-d-a
D.b-d-c-a
(3)What would be the best title of the passage?
A.Do Everything by Yourself
B.Don't Be Afraid to Wait Till Tomorrow
C.Get Your Work Done on Time
D.Ask Others to Help You Do Things發(fā)布:2025/1/5 10:0:6組卷:2引用:1難度:0.7 -
2.A famous teacher was speaking to the students at our school.He began his lesson by holding up a £100 bill.Then he said to the three hundred students, "Who would like to have this £100 bill?" The students began to put up their hands at once.
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"Well," he said, "What if I do this?" and he dropped it on the floor and stepped on it.He picked up the dirty,crumpled" bill and said, "Who still wants it?" Hands went back into the air.
"My friends," he said," You've learned a valuable lesson today.No matter what I did to the money,you still wanted it because it didn't go down in value.It was still worth £100."
"Many times in our lives,we're dropped,crumpled,and stepped on by the chances we take and the things that happen to us.We feel as if we are worth nothing.But remember,no matter what has happened to you,you will never lose your value:you are always valuable to those who love you.Your value doesn't come from what you drop or whom you know,but WHO YOU ARE."
You are special and valuable.Don't ever forget it!
(1)Even though the money was dirty,it
A.went up in value
B.was worth much
C.didn't reduce in value
D.was still ours
(2)The underlined sentence in the third paragraph means
A.the students put up their hands again
B.the students put down their hands
C.the students agreed to what the teacher said
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A.Because he wanted to give a lecture about money.
B.Because he was used to dropping a bill on the floor and stepping on it.
C.Because he was going to give the bill to one of the students.
D.Because he wanted to make the students know what the value was.發(fā)布:2025/1/5 10:0:6組卷:1引用:1難度:0.4 -
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"It's about our life," said Dwayne.
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(1)In the first paragraph,the writer writes about the apartment to show
A.there were unfriendly neighbors
B.there were three children in the family
C.Dwayne's family were living a poor life
D.Dwayne had nothing to say in his composition
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A.Selfish.
B.Caring.
C.Humorous.
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A.She had no time to help with his homework.
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C.She thought his composition needed improving.
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A.Dwayne's mum is serious to him and his two brothers.
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D.Dwayne's younger brothers raced to hug the mum when she came home.發(fā)布:2025/1/5 10:0:6組卷:1引用:1難度:0.2