听第6段材料.回答第6.7题．6．What does Jack want to do?A．Watch TV．B．Play outside．C．Go to the zoo．7．Where does the conversation probably take place?A．At home．B．In a cinema．C．In a supermarket．题目和参考答案——青夏教育精英家教网—

题目内容

12．听第6段材料，回答第6、7题．
6．What does Jack want to do？
A．Watch TV．B．Play outside．C．Go to the zoo．
7．Where does the conversation probably take place？
A．At home．B．In a cinema．C．In a supermarket．

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解答 AC

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练习册系列答案

3．Every animal sleeps，but the reason for this has remained foggy．When lab rats are not allowed to sleep，they die within a month．（71）C
      One idea is that sleep helps us strengthen new memories．（72）EWe  know that，while awake，fresh memories are recorded by reinforeing（加强）connections between brain cells，but the  memory processes that take place while we sleep  have been unclear．
      Support  is  growing for a theory that sleep evolved so that connections between neurons（神经元）in the brain can be weakened overnight，making room for fresh memories to from the next day．（73）F
      Now we have the most direct evidence yet that he is right．（74）GThe synapses in the  mice taken at the end of a period of sleep were 18 per cent smaller than those taken before sleep，showing that the connections between neurons weaken  while sleeping．
     If  Tononi′s theory is right，it would explain why，when we miss a night′s sleep，we find it harder the next day to concentrate and learn new information--our brains may have smaller room for new experiences．
     Their research also suggests how we may build lasting memories over time even though the synapses become thinner．The team discovered that some synapses seem to be protected and stayed the same size．（75）B"You keep what matters，"Tononi says．

A．We should also try to sleep well the night before．
B．It's as if the brain is preserving its most important memories．
C．Similarly，when people go for a few days without sleeping，they get sick．
D．The processes take place to stop our brains becoming loaded with memories．
E．That's why students do better in tests if they get a chance to sleep after learning．
F．"Sleep is the price we pay for learning，"says Giulio Tononi，who developed the idea．
G．Tononi's team measured the size of these connections，or synapses，in the brains of 12 mice．

20．

Before birth，babies can tell the difference between loud sounds and voices．They can even distinguish their mother's voice from that of a female stranger．But when it comes to embryonic learning（胎教），birds could rule the roost．As recently reported in The Auk：Ornithological Adrances，some mother birds may teach their young to sing even before they hatch（孵化）．New-born chicks can then imitate their mom's call within a few days of enering the world．
This educational method was first observed in 2012 by Sonia Kieindorfer，a biologist at Flinders University in South Australia，and her colleagues．Female Australian superb fairy wrens were found to repeat one sound over and over again while hatching their eggs，When the eggs were hatched，the baby birds made the similar chirp to their mothers-a sound that served as their regular"feed me!"call．
To find out if the special quality was more widespread in birds，the researchers sought the red-backed fairy wren，another species of Australian songbird．First they collected sound data from 67 nests in four sites in Queenslang before and after hatching，Then they identified begging calls by analyzing the order and number of notes．A computer analysis blindly compared calls produced by mothers and chicks，ranking them by similarity．
It turns out that baby red-backed fairy wrens also emerge chirping like their moms．And the more frequently mothers had called to their eggs，the more similar were the babies'begging calls．In addition，the team set up a separate experiment that suggested that the baby birds that most closely imitated their mom's voice were rewarded with the most food．
This observation hints that effective embryonic learning could signal neurological（神经系统的）strengths of children to parents．An evolutionary inference can then be drawn．"As a parent，do you invest in quality children，or do you invest in children that are in need？"Kleindorfer asks．"Our results suggest that they might be going for quality．"

58．The underlined phrase in Paragraph 1 means"B"．
A．be the worst B．be the best
C．be the as bad D．be just as good
59．What are Kleindorfer's findings based on？A
A．Similarities between the calls moms and chicks．
B．The observation of fairy wrens across Australia．
C．The data collected from Queensland's locals．
D．Controlled experiments on wrens and other birds．
60．Embryonic learning helps mother birds to identify the baby birds whichC．
A．can receive quality signals
B．are in need of training
C．fit the environment better
D．make the loudest call．

7．What will the woman do this afternoon？
A．Do some exercise．B．Go shopping．C．Wash her clothes．

17．San Francisco Fire Engine ToursSan Francisco Winery Tour
   Running：February 1st through April 30th
   This delicious tour goes through the city on its way to Treasure Island where we will stop at the famous Winery SF．Here you can enjoy 4 pours of some of the best wine San Francisco has to offer．（Included in ticket price）
Departing from the Cannery：Tell times upon request
Duration（时长）：2 hours
Price：$90
Back to the Fifties Tour
Running：August 16th through August 31st
This tour transports you back in time to one of San Francisco's most fantastic periods，the 1950s!Enjoy fun history as we take you through San Francisco for a free taste of ice cream．
Departing form the Cannery 5：00 pm and 7：30 pm
Duration：2 hours
Price：$90
  Spooky Halloween Tour
Running：October 10th through October 31st
Join us for a ride through the historical Presidio district．Authentic fire gear （服装）is provided for your warmth as our entertainers take you to some of the most thrilling parts of San Francisco．
Departing from the Cannery：6：30 pm and 8：30 pm
Duration：1 hour and 30 minutes
Price：Available upon request
   Holiday Lights Tour
Running：December 6th through December 23rd
This attractive tour takes you to some of San Francisco's most cheerful holiday scenes．Authentic fire gear is provided for your warmth as you get into the holiday spirit．
Departing from the Cannery 7：00 pm and 9：00 pm
Duration：1 hour and 30 minutes
Advance reservations required．
21．Which of the tours is available in March？A
A．San Francisco Winery Tour．     B．Back to the Fifties Tour．
C．Spooky Halloween Tour．             D．Holiday Lights Tour．
22．What can tourists do on Back to the Fifties Tours？C
A．Go to Treasure Island．     B．Enjoy the holiday scenes．
C．Have free ice cream．         D．Visit the Presidio district．
23．What are tourists required to do to go on Holiday Lights Tour？D
A．Take some drinks．    B．Set off early in the morning．
C．Wear warm clothes．   D．Make reservations in advance．

4．假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文．文中共有10处语言错误，每句中最多有两处．每处错误仅涉及一个单词的增加、删除或修改．
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词．
删除：把多余的词用斜线（\）划掉．
修改：在错的词下划一横线，并在该词下面写出修改后的词．
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者（从第11处起）不计分．
When I look at this picture of myself．I realize of how fast time flies．I had grown
not only physically，and also mentally in the past few years．About one month after this photo
was took，I entered my second year of high school and become a new member of the school
music club．Around me in picture are the things they were very important in my life at that
time；car magazines and musical instruments．I enjoyed studying difference kinds of cars and
planes，playing pop music，and collecting the late music albums．This picture often brings
back to me many happy memories of your high school days．

In agrarian(农业的), pre-industrial Europe, “you’d want to wake up early, start working with the sunrise, have a break to have the largest meal, and then you’d go back to work,” says Ken Albala, a professor of history at the University of the Pacific. “Later, at 5 or 6, you’d have a smaller supper.”

This comfortable cycle, in which the rhythms of the day helped shape the rhythms of the meals, gave rise to the custom of the large midday meal, eaten with the extended family. “Meals are the foundation of the family,” says Carole Couniban, a professor at Millersville University in Pennsylvania, “so there was a very important interconnection between eating together and strengthening family ties.”

Since industrialization, maintaining such a slow cultural metabolism has been much harder, with the long midday meal shrinking to whatever could be stuffed into a lunch bucket or bought at a food stand. Certainly, there were benefits. Modern techniques for producing and shipping food led to greater variety and quantity, including a tremendous increase in the amount of animal protein and dairy products available, making us more energetic than our ancestors.

Yet plenty has been lost too, even in cultures that still live to eat. Take Italy. It’s no secret that the Mediterranean diet is healthy, but it was also a joy to prepare and eat. Italians, says Counihan, traditionally began the day with a small meal. The big meal came at around 1 p.m. In between the midday meal and a late, smaller dinner came a small snack. Today, when time zones have less and less meaning, there is little tolerance for offices’ closing for lunch, and worsening traffic in cities means workers can’t make it home and back fast enough anyway. So the formerly small supper after sundown becomes the big meal of the day, the only one at which the family has a chance to get together. “The evening meal carries the full burden that used to be spread over two meals,” says Counihan.

1.What does Professor Carole Counihan say about pre-industrial European families eating meals together？

A. It was helpful to maintaining a nation’s tradition.

B. It brought family members closer to each other.

C. It was characteristic of the agrarian culture.

D. It enabled families to save a lot of money.

2.What does “cultural metabolism”（Line 1, Para. 3) refer to？

A. Evolutionary adaptation. B. Changes in lifestyle.

C. Social progress. D. Pace of life.

3.What does the author think of the food people eat today?

A. Its quality is usually guaranteed.

B. It is varied, abundant and nutritious.

C. It is more costly than what our ancestors ate.