The emergency required that all the tasks at least two days ahead of time． A．to complete B．should complete C．be completed Dshould have been completed 题目和参考答案——青夏教育精英家教网—

题目内容

The emergency required that all the tasks _____ at least two days ahead of time．

A．to complete B．should complete C．be completed Dshould have been completed

解析:

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根据短文内容，从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。

Over the last 25 years, British society has changed a great deal – or at least many parts of it have. 71 . Ideas about social class – whether a person is “working - class” or “middle - class” – are one area in which changes have been extremely slow.

　　In the past, the working-class tended to be paid less than middle-class people. The typical working man would collect his wages on Friday evening and then, it was widely believed, having given his wife her "housekeeping", would go out and squander the rest on beer and betting.

　　The old style of what a middle-class man did with his money was perhaps nearer the truth. He was-and still is - inclined to take a longer-term view. Not only did he regard buying a house as a most important thing, but he also considered the education of his children as extremely important. 72 . Only in very few cases did workers have the opportunity （or the education and training） to make such long-term plans.

　　 73 . In a large number of cases factory workers earn as much as their middle – class supervisors (管理者). Social security and laws to improve century, have made it less necessary than before to worry about "tomorrow". Working-class people seem slowly to be losing the feeling of inferiority(自卑感). In fact there has been a growing tendency in the past few years for the middle-classes to feel slightly ashamed of their position.

74 .They generally tend to share very similar tastes in music and clothes, they spend their money in having a good time, and save for holidays or longer-term plans when necessary. There seems to be much less difference than in precious generations. 75 . As long as this gap exists, there will always be a possibility that new conflicts and jealousies will emerge, or rather that the old conflicts will re-appear, but between different groups.

A．Nowadays, a great deal has changed

B．Both of these provided him and his family with security

C．As a result, differences in life – styles and attitudes came into existence

D．However, we still have a wide gap between the well – paid and the low - paid

E．In recent years, the working – class people have begun to design long – term plans

F．In some ways, however, very little has changed, particularly where attitudes are concerned

G．The changes in both life – styles and attitudes are probably most easily seen amongst younger people

Happiness is U-shaped, for we are happier at the start and end of our lives but hit a slump when we are middle-aged, British and US researchers say.

Economists from the University of Warwick, central England, and from Dartmouth College, New Hampshire, looked at data on the mental health of two million people from 80 countries.

In Britain, the probability of depression for men and women peaks at around 44 years of age, Warwick University said in a press release.

In the United States, though, ________________________between men and women. Among women, unhappiness peaked at around the age of 40, whereas among men, it was about 50.

But the U-shape of happiness is constant around the world, and mid-life depression occurs regardless of marital status(婚姻状况), changes in job or income.

The study appears in Social Science & Medicine, published by the Dutch publishing house Elsevier.

"It happens to men and women, to single and married people, to rich and poor, and to those with and without children." said co-author Andrew Oswald.

One possibility may be that people realize they won't achieve many of their ambitions at middle age. The researchers said.

Another reason could be that after seeing their fellow middle-aged peers begin to die, people begin to value their own remaining years and embrace life once more.

But the good news is that if people make it to aged 70 and are still physically fit, they are on average as happy and mentally healthy as a 20-year old.

"For the average persons in the modern world, the dip in mental health and happiness comes on slowly, not suddenly in a single year," Oswald said. "Only in their fifties do people emerge from this low period.

1.Which sentence in the passage is the closest in meaning to the following one?

There are chances that the middle-aged people will realize their ideal is likely to be unattainable.

_________________________________________________________________________

2.Fill in the blank in Paragraph 3 with a proper sentence．(within 10 words)

3.How do you understand the sentence that “Happiness is U-shaped”? (within 20 words)

_________________________________________________________________________

4.Is mid-life depression a common Phenomenon in the world ? How do you know?(within 15 words)

_________________________________________________________________________

5.Translate the underlined sentence in the last paragraph into Chinese

_________________________________________________________________________

Birds that are half-asleep—with one brain hemisphere (半球) alert and the other sleeping—control which side of the brain remains awake, according to a new study of sleeping ducks.
Earlier studies have documented half-brain sleep in a wide range of birds. The brain hemispheres take turns sinking into the sleep stage characterized by slow brain waves. The eye controlled by the sleeping hemisphere keeps shut, while the wakeful hemisphere’s eye stays open and alert. Birds also can sleep with both hemispheres resting at once.
Decades of studies of bird groups led researchers to predict extra alertness in the end-of-the-row sleepers which tend to be attacked more easily. Sure enough, the end birds tended to watch carefully on the side away from their companions. Ducks in the inner spots showed no preference for gaze direction.
Also, birds napping at the end of the line depend on single-hemisphere sleep, rather than total relaxation, more often than inner ducks did. Turning 16 birds through the positions in a four-duck row, the researchers found that compared with 12 percent for birds in internal spots, outer birds half-asleep during some 32 percent of napping time.
“We believe this is the first evidence for an animal behaviorally controlling sleep and wakefulness at the same time in different regions of the brain,” the researchers say.
The results provide the best evidence for a long-standing assumption that single-hemisphere sleep evolved as creatures scanned for enemies. The preference for opening an eye on the lookout side could be widespread, he predicts. He’s seen it in a pair of birds napping side-by-side in the zoo and in a single pet bird sleeping by a mirror. The mirror-side eye closed as if the reflection were a companion and the other eye stayed open.
Useful as half-sleeping might be, it’s only been found in birds and such water animals as dolphins, whales, and seals. Perhaps keeping one side of the brain awake allows a sleeping animal to surface occasionally to avoid drowning.
Studies of birds may offer unique insights into sleep. Jerome M. Siegel of the UCLA says he wonders if birds’ half-brain sleep “is just the tip of the iceberg.” He supposes that more examples may turn up when we take a closer look at other species.
72. According to the passage, birds often half sleep because ______.
A. they have to watch out for possible attacks
B. their brain hemispheres take turns to rest
C. the two halves of their brain are differently structured
D. they have to constantly keep an eye on their companions
73. What is implied about the example of a bird’s sleeping in front of a mirror?
A. An imagined companion gives the bird a sense of security.
B. Birds prefer to sleep in pairs for the sake of their security.
C. The phenomenon of birds napping in pairs is widespread.
D. A single pet bird enjoys seeing its own reflection in the mirror.
74. While sleeping, some water animals tend to keep half awake in order to ______.
A. alert themselves to the approaching enemy
B. emerge from water now and then to breathe
C. be sensitive to the ever-changing environment
D. avoid being swept away by rapid currents
75. By saying “just the tip of the iceberg”, Siegel suggests that ______.
A. half-brain sleep has something to do with icy weather
B. the mystery of half-brain sleep is close to being solved
C. most birds living in cold regions tend to be half sleepers
D. half-brain sleep may exist among other species

Elephants have four distinct personalities that help their herd survive in the African bush, scientists have found.
With their grey skin, mournful eyes and slow heavy pace, you could be forgiven for thinking elephants are uniformly melancholy(忧郁的) creatures. But scientists have now discovered the largest living land animals have personalities to match their size.
In a new study of African elephants, researchers have identified four distinct characters that are common in a herd – the leaders, the gentle giants, the playful rogues(小淘气) and the reliable plodders (辛勤工作的人).
Each of the types has developed to help the giant mammals survive in their harsh environment and is almost unique in the animal kingdom, according to the scientists.
Professor Phyllis Lee and her colleague Cynthia Moss studied a herd of elephants in the Amboseli National Park in Kenya known as the EB family — famous for their matriarch Echo before she died in 2009.
Using data collected over 38 years of watching this group, the researchers analyzed them for 26 types of behavior and found four personality features tended to emerge.
The strongest personality to emerge was that of the leader. Unlike other animals, where leadership tends to be won by the most dominant and aggressive individual, the elephants instead respected intelligence and problem solving in their leader. Echo, the matriarch and oldest in the group, her daughter Enid, and Ella, the second oldest female, all emerged as leaders.
The playful elephants tended to be younger but were more curious and active. Eudora, a 40-year-old female in the herd, seemed to be the most playful, consistently showing this feature throughout her life while playfulness in some of the other elephants declined with age.
Gentle elephants, which included two 27-year-old females Eleanor and Eliot, touched and rubbed against others more than the others.
Those that were reliable tended to be those that were most consistent at making good decisions, helped to care for infants in the herd and were calm when faced with threats. Echo and her youngest daughter Ebony seemed to be the most reliable.
Professor Lee said that elephants with these features tended to be the most socially integrated in the group while those who tended to be less reliable and pushy were more likely to split from the herd.
【小题1】From the passage we get to know that ________.

A．the researchers reached their conclusion by analyzing the data

B．the research centered on the 26 types of behavior of the matriarch

C．the scientists conducted the research by comparing elephants with other animals

D．professor Phyllis Lee and her colleague spent nearly 38 years tracking the herd

【小题2】According to the new findings of the scientists, ________.

A．playfulness of an elephant will always decline with age

B．those elephants which are caring and wise are most reliable

C．each elephant can be matched with only one of the four personalities

D．once becoming a member of a herd, an elephant will never split from it

【小题3】In the EB family Echo and Eudora are ________.

A．mother and daughter	B．two oldest females
C．the gentlest ones	D．leader and member

请认真阅读下列短文，并根据短文的内容要点完成文章后的表格。注意：补全填空应符合语法和搭配要求，每空只填一个单词。

Happiness is U-shaped, for we are happier at the start and end of our lives but hit a slump when we are middle-aged, British and US researchers say.

Economists from the University of Warwick, central England, and from Dartmouth College, New Hampshire, looked at data on the mental health of two million people from 80 countries.

In Britain, the probability of depression for men and women peaks at around 44 years of age, Warwick University said in a press release.

In the United States, though, there was a big difference between men and women.

Among women, unhappiness peaked at around the age of 40, whereas among men, it was about 50.

But the U-shape of happiness is constant around the world, and mid-life depression takes place regardless of marital status, changes in job or income.

The study appears in Social Science & Medicine, published by the Dutch publishing house Elsevier.

"It happens to men and women ,to single and married people, to rich and poor and to those with and without children." said co-author Andrew Oswald.

One possibility may be that people realize they won't achieve many of their aspirations at middle age, the researchers said.

Another reason could be that after seeing their fellow middle-aged peers begin to die, people begin to value their own remaining years and embrace life once more.

But the good news is that if people make it to aged 70 and are still physically fit, they are on average as happy and mentally healthy as a 20-year old.

Title: People happiest at start and end of lives, but slump in middle

Theme	Happiness is in the (1) of U, for we are happier when are young and old but unhappy when we are middle-aged.
Findings	For (2) men and women, depression is most (3) to peak when they are about 44 years old.
For American people, men and women are very (4) . Most women feel (5) at around the age of 40. Among men, unhappiness peaks at about 50.
The U-shape of happiness is constant around the world, and mid-life depression (6) regardless of marital status, changes in job or income.
(7)	Possibly because people realize they are (8) to achieve many of their aspirations at middle age.
Possibly because after they have seen their fellow middle-aged peers’ deaths, people begin to value their own years (9) and embrace life once more.
Good news	If people are still in good (10) when they reach 70, they are on average as happy and mentally healthy as a 20-year old.

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