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astronomers noticed that bright stars suddenly appeared in the sky and then later disappeared. These stars
were called "novae" because they were thought to be new. In fact we now know that they are really old stars
which are slowly dying.
Novae are old stars which are slowly dying. As they do so they let out huge clouds of material, sometimes
as large as the earth, and these explode into space at a speed of about 8 000 000 kilometers per hour. When
this happens, the hotter parts of the star become visible, and this is why novae are so bright. Although the
explosions are so huge on a human scale, they only consume a small part of the dying star's energy. The death
is a slow one and the star may continue to explode for thousands of years. Indeed, there are even some stars
which explode once every two weeks.
There are other old stars which do not die slowly, but are completely destroyed by one great explosion.
These are known as "supernovae". The explosion of a supernovae is equivalent to about a million, million,
million, million hydrogen bombs going off at the same time. Just before the explosion the star's density becomes
very great and it spins at a very high speed. A matchbox of materials taken from the star at that time would
weigh about 1 000 tons and the star would be turning at about 16 000 000 kilometers per hour. The explosion
itself occurs suddenly, in the interval of a minute, but the supernovae continues to shine long after the event.
One supernovae which Chinese astronomers observed in 1054 can still be seen by us today. It has been shining
for at least nine hundred years.
B. stars that explode
C. new stars
D. dying stars
B. they die gradually
C. they can be seen from the earth
D. they explode suddenly
B. as they are slowing dying
C. as they explode into energy
D. as they consume the star's energy
B. the explosion may continue for thousands of years
C. each explosion only consumes a little energy of the star
D. the novae may continue to shine long after the explosion
B. the density of the star is very great
C. the star explodes all of a sudden
D. the star gives off a lot of material
When I was growing up, I had an old neighbor named Dr. Gibbs. He didn’t look like any doctor I’d ever known. He never yelled at us for playing in his yard. I remember him as someone who was a lot nicer than most of the adults in our community.
When Dr. Gibbs wasn’t saving lives, he was planting trees. His house sat on ten acres, and his life’s goal was to make it a forest.
The good doctor had some interesting theories concerning plant care and growth. He never watered his new trees, which flew in the face of conventional wisdom. Once I asked why. He said that watering plants spoiled them so that each successive tree generation would grow weaker and weaker. So you have to make things rough for them and weed out(淘汰) the weaker trees early on.
He talked about how watering trees made for shallow roots, and how trees that weren’t watered had to grow deep roots in search of moisture. I took him to mean that deep roots were to be treasured.
So he never watered his trees. He planted an oak and, instead of watering it every morning, he’d beat it with a rolled-up newspaper. Smack! Slap! Pow! I asked him why he did that, and he said it was to get the tree’s attention.
Dr. Gibbs passed away a couple of years after I left home. Every now and again, I walked by his house and looked at the trees that I’d watched him plant some twenty-five years ago. They’re extremely tall, big and robust since they have deep roots now. However, the trees in my garden trembled in a cold wind although I had watered them for several years.
It seems that adversity(逆境) and suffering benefit these trees in ways comfort and ease never could. I stood there deep in thought.
Every night before I go to bed, I check on my two sons. I stand over them and watch their little bodies, the rising and falling of life within. I often pray for them. Mostly I pray that their lives will be easy. But I think it’s time to change my prayer(祷词) because now I know my children are going to encounter hardship..
According to Dr. Gibbs’ theories, trees will become weaker if they______
A. are lack of care B. are watered C. are weeded out D. are beaten
.According to Para.3 and Pare.4, we can infer that Dr. Gibbs’moto(座右铭)may be_____
A. “seeing is believing” B.“Put everything in proper use”
C. ”Practice makes perfect” D. “No pains, no gains”
.The underlined word robust in Para.5 most probably means______
A. strong B. strange C. deep D. old
Which of the following may be the author’s best prayer for his two sons now ?
A. I wish them strong wings, with which they can fly higher and touch the sky.
B.I wish them nice fortune so that they can meet people like Dr. Gibbs in the future.
C.I wish them deep roots into the earth since the rains fall and the winds blow often.
D.I wish them great shades under the tree since the sunlight is always sharp and bitter.
Which of the following can be the best title of the passage?
A. A Nice Doctor B. The Deep Roots
C. Adversity and Suffering D. My Childhood Memory
查看习题详情和答案>>The factory produces two million pairs of shoes every year, half ______ are sold abroad.
- A.of which
- B.which of
- C.of them
- D.of that
短文改错 (共10分,每小题1分,满分10分)
One day I happened to find a chatting room in 1——
my QQ,there people were chatting in English.I tried 2——
to chat with some of them.T0 my surprised,I found 3——
the oral English of some junior students were better 4——
than me.I asked them for advice and they told me 5——
to practise more on QQ. But every day after that I 6——
would spend one hour practise my oral English on QQ. 7——
Day by day I learned from many useful words and 8——
expressions.With time went by.I found that I could 9——
even communicate some college students freely. 10_____
查看习题详情和答案>>In the United States, when one becomes rich, he wants people to know it. And even if he does not become very rich, he wants people to think that he is. That is what “keeping up with the Joneses” is about. It is the story of someone who tried to look as rich as his neighbors.
The expression was first used in 1913 by a young American called Arthur Momand. He told this story about himself. He began earning $ 125 a week at the age of 23. That was a lot of money in those days. He got married and moved with his wife to a very wealthy neighborhood. When he saw that rich people rode horses, Momand went horseback riding every day. When he saw that rich people had servants. Momand and his wife also hired a servant and gave big parties for their new neighbors.
It was like a race, but one could never finish this race because one was always trying to keep up. The race ended for Momand and his wife when they could no longer pay for their new way of life. They had to move back to an apartment in New York City.
Momand looked around him and noticed that many people do things just to keep up with rich lifestyle of their neighbors. He saw the funny side of it and started to write a series of short stories. He called it “Keeping up with the Joneses” because “Jones” is a very common name in the United States. “Keeping up with the Joneses” came to mean keeping up with rich lifestyle of the people around you. Momand’s series appeared in different newspapers across the country for over 28 years.
People never seem to get tired of keeping up with the Joneses. And there are “Joneses” in every city of the world. But one must get tired of trying to keep up with the Joneses because no matter what one does, Mr. Jones always seems to be ahead.
Some people want to keep up with the Joneses because they ______.
A. want to be as rich as their neighbors
B. want others to know or to think that they are rich
C. don’t want others to know they are rich
D. want to be happy
It can be inferred from the story that rich people like to ________.
A. live outside New York City B. live in New York City
C. live in apartments D. live with many neighbors
What’s the author’s attitude to keeping up with the Joneses?
A. Negative. B. Positive. C. Supportive. D. Objective.
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