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We know very little about the central Africa 200 years ago because______.A.there was nothi

We know very little about the central Africa 200 years ago because______.

A.there was nothing worth Being written down at that time

B.the people there don't pay attention to the importance of keeping a record

C.the written records were perhaps destroyed by a fire

D.the people there did not know how to write

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更多“We know very little about the …”相关的问题
第1题
My wife and I moved into our home nine years ago. We have a yard and a "rock garden&q
uot;. Therethe rocks appear to be just thrown up onto the dirt as if someone were in a hurry, to finish. Very oftenwhen we have more flowers, Denise or I would plant them between the rocks,just to add some colorto the area.

Last summer I found, in the rock garden, a tiny little plant that I could not immediatelyrecognize. I knew I didn&39; t plant it and Denise said she didn&39; t either. We decided to let it continuegrowing until we could find out what it was.

Weeks passed and as I made my way back to the strange plant, it appeared to&39;be a sunflower. Itlooked thin and tall with only one head on it. I decided to baby it along and weed(除草) around it.As I pulled rocks from the area to get to the weeds, I noticed something unusual. The sunflower hadnot started where I saw it begin. It actually had begun under a big rock and grown under and around it to reach the sun.

If a tiny little sunflower didn&39; t let a big rock stand in its way of developing, we too have theability to do the same thing. If we believe in ourselves like that little sunflower, we can reach wherewe aim to go and get what we need for growth.

We need to believe in ourselves knowing we have the ability to achieve our goals. Like thesunflower, it knew it had the ability to get over the rocks because it had faith in itself that it wouldsucceed. Stand tall like the sunflower and be proud of who and what we are,then other things will beginto support us. We will find a way to go under or around any "rocks" in order to realize our goals.

Why did the family plant flowers in the "rock garden"?

A.To attract visitors.

B.To remove the rocks.

C.To please their neighbors.

D.To make the area colorful.

The author let the tiny plant continue growingA.to see how long it could live

B.to see how big it could grow

C.to find out what it actually was

D.to know if his wife had planted it

Why did the author think the sunflower was unusual?A.It was very thin and tall.

B.It had only one head on it.

C.It grew on top of a big rock.

D.It began to grow under a rock.

What does the author want to say through the story?A.Rocks cannot prevent us from success.

B.Sunflowers are able to grow everywhere.

C.We should take good care of the rock gardens.

D.We can get over difficulties if we trust ourselves.

请帮忙给出每个问题的正确答案和分析,谢谢!

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第2题
We know that trees are useful in our everyday life. They give us many things, such as
wood, oxygen, rubber, medicines and many other things. They can __1__ tell us a lot about our climate. The following are the reasons. If you cut across a tree, you can see that it has many rings. Most trees grow one new ring __2__ year. Because of the reason, we know how old a tree is. A tree over a hundred years old means that it has more than a hundred __3__. When the climate is dry or very cold, the trees do not grow very much and their rings are usually thin. When it is wet and warm, the rings are much thicker. If the rings are suddenly very thin or suddenly very thick, this means that the __4__ changed suddenly. If we look at the rings on this tree, we can learn about the climate for a hundred years. We can see __5__ our climate is changing today.

1)、A.climate

B.rings

C.every

D.also

E.how

2)、A.climate

B.rings

C.every

D.also

E.how

3)、A.climate

B.rings

C.every

D.also

E.how

4)、A.climate

B.rings

C.every

D.also

E.how

5)、A.climate

B.rings

C.every

D.also

E.how

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第3题
Secure Net (SN) manufacture security cards that restrict access to government owned buildi

Secure Net (SN) manufacture security cards that restrict access to government owned buildings around the world.

The standard cost for the plastic that goes into making a card is $4 per kg and each card uses 40g of plastic after an allowance for waste. In November 100,000 cards were produced and sold by SN and this was well above the budgeted sales of 60,000 cards.

The actual cost of the plastic was $5·25 per kg and the production manager (who is responsible for all buying and production issues) was asked to explain the increase. He said ‘World oil price increases pushed up plastic prices by 20% compared to our budget and I also decided to use a different supplier who promised better quality and increased reliability for a slightly higher price. I know we have overspent but not all the increase in plastic prices is my fault’ The actual usage of plastic per card was 35g per card and again the production manager had an explanation. He said ‘The world-wide standard size for security cards increased by 5% due to a change in the card reader technology, however, our new supplier provided much better quality of plastic and this helped to cut down on the waste.’

SN operates a just in time (JIT) system and hence carries very little inventory.Required:

(a) Calculate the total material price and total material usage variances ignoring any possible planning error in the figures. (4 marks)

(b) Analyse the above total variances into component parts for planning and operational variances in as much detail as the information allows. (8 marks)

(c) Assess the performance of the production manager. (8 marks)

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第4题
Scientists have found that although we are prone to snap overreactions, if we take a momen
t and think about how we are likely to react, we can reduce or even eliminate the negative effects of our quick, hard-wired responses.

Snap decisions can be important defense mechanisms; if we are judging whether someone is dangerous, our brains and bodies are hard-wired to react very quickly, within milliseconds. But we need more time to assess other factors. To accurately tell whether someone is sociable, studies show, we need at least a minute, preferably five. It takes a while to judge complex aspects of personality, like neuroticism or open-mindedness.

But snap decisions in reaction to rapid stimuli aren’t exclusive to the interpersonal realm. Psychologists at the University of Toronto found that viewing a fast-food logo for just a few milliseconds primes us to read 20 percent faster, even though reading has little to do with eating. We unconsciously associate fast food with speed and impatience and carry those impulses into whatever else we’re doing, Subjects exposed to fast-food flashes also tend to think a musical piece lasts too long.

Yet we can reverse such influences. If we know we will overreact to consumer products or housing options when we see a happy face (one reason good sales representatives and real estate agents are always smiling), we can take a moment before buying. If we know female job screeners are more likely to reject attractive female applicants, we can help screeners understand their biases-or hire outside screeners.

John Gottman, the marriage expert, explains that we quickly “thin slice” information reliably only after we ground such snap reactions in “thick sliced” long-term study. When Dr. Gottman really wants to assess whether a couple will stay together, he invites them to his island retreat for a muck longer evaluation; two days, not two seconds.

Our ability to mute our hard-wired reactions by pausing is what differentiates us from animals: doge can think about the future only intermittently or for a few minutes. But historically we have spent about 12 percent of our days contemplating the longer term. Although technology might change the way we react, it hasn’t changed our nature. We still have the imaginative capacity to rise above temptation and reverse the high-speed trend.

The time needed in making decisions may____ .

A.vary according to the urgency of the situation

B.prove the complexity of our brain reaction

C.depend on the importance of the assessment

D.predetermine the accuracy of our judgment

John Gottman says that reliable snap reaction are based on____ .

A.critical assessment

B.“thin sliced”study

C.sensible explanation

D.adequate information

The author’s attitude toward reversing the high-speed trend is____ .A.tolerant

B.uncertain

C.optimistic

D.doubtful

Our reaction to a fast-food logo shows that snao decisions____ .A.can be associative

B.are not unconscious

C.can be dangerous

D.are not impulsive

To reverse the negative influences of snap decisions,we should____ .A.trust our first impression

B.do as people usually do

C.think before we act

D.ask for expert advice

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第5题
Mr. Brown is 102 years old. He is leading a full and active life. Why has he【21】so long? M
any【22】would like to know the answer to the question. They are studying groups of old people all over the world and try to find why some very old people remain healthy【23】and spirit (精神) while【24】be come weak and iii in their 60s. They have observed, first of all, that doing【25】work is a way of life for all these long-lived people. They began their long days of physical labor【26】children and never seem to stop. Second, all these people come from【27】. The air has【28】oxygen (氧) and is pollution free,【29】makes the hearts stronger. Third, these people eat little animal meat. They like to have fresh vegetables, nuts (坚果) , grains, and【30】They never eat more food than their bodies need.

(46)

A.been

B.worked

C.stayed

D.lived

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第6题
Last year we visited, the place where Shakespeare was born on the 23rd of April, 1564.

Stratfordis a very interesting town, right in the centre of. The countryside aroundis pleasant, with its beautiful woods, green fields and quiet rivers.

The first place we visited was the house in the centre ofwhere Shakespeare was born. We saw the small desk that Shakespeare sat at when he went to school. One of the things we liked best was the garden behind the house, because we could see there many of the flowers, trees and plants that Shakespeare wrote about in his plays.

After we had visited Shakespeare's birthplace, we went to see the church where he was buried.

We had lunch in a very old hotel that was probably there in Shakespeare's time- Every room of the hotel had the name of one of Shakespeare's plays on the door—the "Hamlet" room, the "Romeo and Juliet" room, and so on.

After lunch we walked across the fields to the old cottage, about a mile out of, where Shakespeare spent most of his married life. The cottage is just as it was in Shakespeare's day. We saw the chairs where Shakespeare perhaps sat and thought about ideas for new plays, and we saw the plates from which he probably ate his dinner.

When we got back to our hotel in the evening, we were very tired, but we had enjoyed a wonderful day.

86.Shakespeare was born in ____.

A.1464

B.1564

C.1664

D.1764

87.Stratford where Shakespeare was born is _____.

A.an industrial city in the middle of

B.an interesting farm surrounded by woods and fields

C.a small town in the center of

D.part of the countryside in central England

88.Which of the following is NOT true_____

A.Shakespeare was born in a house in the centre of.

B.Shakespeare was buried in a church in his native town.

C.Shakespeare was buried in Wesminsier Abbey.

D.Inthere is a very old hotel which existed probably in Shakespeare's time.

89.After Shakespeare got married, _____.

A.he stayed home and wrote his plays

B.he lived in the centre of

C.he began to write plays

D.he spent most of his married life in an old cottage

90.A more suitable little for the above passage is ____.

A.Shakespeare and His Birthplace

B.A Visit lo

C.A Day in Stratford

D.A Famous Town

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第7题
Is there something as truth? For a good many centuries "the search for truth" has been (31

Is there something as truth? For a good many centuries "the search for truth" has been (31) the noblest activity of the human mind, but the seekers after truth have come to such (32) conclusions that it often seems that very little progress has been made. (33) , there are many people who reel that we are actually going backward. They (34) , often contemptuously, that we have accumulated more "knowledge" than our ancestors, but they think we are farther from the truth than ever, or even that we have (35) the truth that we once possessed. If people look for anything long enough without finding it, the question naturally arises (36) the thing is really there to find. You have seen a picture of an animal with a lion's head, a goat's body, and a serpent's tail--and maybe an eagle's wings for good (37) There is plenty of evidence that each part of this animal (38) --but there is no (39) evidence that the parts ever occur in this combination. It is at least conceivable that the seekers after "truth" have made a similar mistake and invented an (40) combination.A.regardedB.consideredC.ponderedD.referred

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第8题
S: Good morning.()?C: Good morning. Would you show me some typical Chinese souvenirs? I’
S: Good morning.()?

C: Good morning. Would you show me some typical Chinese souvenirs? I’d like

to buy a gift for my wife.

S: We've got plenty of silk scarves and silk dresses for you to choose from.

C: The dress is very nice.()?

S: Fifty-five US dollars.

C: It's a little more than I expected.()?

S: I'd like to, but I'm afraid I can't. You see, it's already 5% off the regular price.

C: Then().

S: Well, let me ask the manager if it's all right... I'm sorry to have kept you

waiting. The best we can do is to give you a 10% discount.

C: OK.().

A.I'm afraid I can't afford it

B. I'll take it

C.How much is it

D. Can I help you?

E. Could you give me a discount

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第9题
Passage 2 Questions 1to 5 are based on the following passage:Sometimes a book can help c

Passage 2 Questions 1to 5 are based on the following passage:

Sometimes a book can help change history. One book that certainly did was Uncle Tom’s Cabin, Written by Harriet Beecher Stowe. It was a book that spoke out against slavery.

As Harriet Beecher Stowe wrote her book, there were over3.5 million slaves in the United States. Slaves were usually in the cotton-growing states of the South. The Northern States has ended slavery. Yet most northerners were not strongly against slavery. They did not mind that slavery continued in the South.

Stowe decided to make people understand that slavery was very bad. Each night after putting r six children to bed, she worked on her book. She told the owner. She also told how the slaves tried to run away for freedom. Uncle Tom’s Cabin first came in 1852. Over 300,000 books were sold out in a year.

People had different ideas about the book. In the North, many people finally believed that slavery must be ended after they read the book. In the South, many people were very angry at the people in the North. By 1861 the two parts of the country were at war. The Civil War, which lasted until of cease, was made to happen by many things. Yet Uncle Tom’s Cabin surely played a part. Stowe met President Linclon in 1862. As Linclon took her hand, he said, “So you are the woman who starred the big war.”

1、Before Uncle Tom’s Cabin came out, most Northerners ______.

A、were slaves in the South

B、did not know how bad slavery was

C、kept slaves in their homes

D、understood that slavery was wrong

2、While many Northerners agreed with Harriet Beacher Stowe,______.

A、many southerners wanted war

B、many southerners had not read the boo

C、many southerners were angry at her

D、some slaves tried to run away from North

3、From the text, we can infer that _______.

A、Stowe was a very young woman

B、Stowe’s husband was dead when she wrote the story

C、Stowe wrote her book with stories from her six children

D、Stowe could not work on her book at all during the daytime

4、Uncle Tom’s Cabin was _______.

A、a book about Harriet Beecher Stowe

B、a history book

C、a book that helped change history

D、a book about the American Civil war

5、Harriet Beecher Stowe _______.

A、was a little woman who started the American Civil War together with Abraham Linclon

B、was strongly against the slavery

C、helped some slaves to run away from the South

D、met Abraham Lincoln before the Civil War

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第10题
People have wondered for a long time how their personalities and behaviors are formed. It
is not easy to explain why one person is intelligent and another is not, or why one is cooperative and another is competitive.

Social scientists are, of course, extremely interested in these types of questions. They want to explain why we possess certain characteristics and exhibit certain behaviors. There are no clear answers yet, but two distinct schools of thought on the matter have been developed. As one might expect, the two approaches are very different from one another, and there is a great deal of debate between proponents of each theory. The controversy is often referred to as " nature/nurture".

Two who support the" nature" side of the conflict believe that our personalities and behavior. patterns are largely determined by biological and genetic factors. That our environment has little, if anything, to do with our abilities, characteristics, and behavior. is central to this theory. Taken to an extreme, this theory maintains that our behavior. is predetermined to such a degree that we are almost completely governed by our instincts.

Proponents of the " nurture" theory, or as they are often called, behaviorists, claimed that our environment is more important than our biologically based instincts in determining how we will act. A behaviorist, B. F. Skinner, sees humans as beings whose behavior. is almost completely shaped by their surroundings. The behaviorists view of the human being is quite mechanistic; they maintain that, like machines, humans respond to environmental stimulus as the basis of their behavior.

Neither of these theories can yet fully explain human behavior. In fact, it is quite likely that the key to our behavior. lies somewhere between these two extremes. That the controversy will continue for a long time is certain.

Which of the following statements would supporters of the" nature" theory agree with?

A.A person's instincts have little effect on his actions.

B.Environment is important in determining a person's behavior. and personality.

C.Biological reasons have a strong influence on how we act.

D.The behaviorists' view correctly explains how we act.

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第11题
Years ago our cities were full of cars, buses and trucks. Now the streets are completely c
ongested (拥挤的) and it is very difficult to drive a car along them. Drivers must stop at hundreds of traffic lights. What are our cities going to be like in ten or twenty years? Will enormous (巨大的) motorways be built across them? With big motorways cutting across them, full of noisy, dirty cars and lorries, our cities are going to be awful places. How can we solve the problem?

There are some good ideas to reduce the use of private cars. In 1989, for example, the authorities in Rome began an interesting experiment: passengers on the city buses did not have to pay for their tickets.

In Stockholm there was another experiment: people paid very little for a season ticket to travel on any bus, trolley bus, train or tram in all the city.

In many cities now some streets are closed to vehicles, and pedestrians are safe there.

In London there is another experiment: part of the street is for buses only, so the buses can travel fast. There are no cars or taxies in front of them.

What the writer worries about in a big city is ______.

A.the number of traffic lights

B.the shortage of buses

C.the lack of motorways

D.the traffic congestion

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