相关习题
 0  136222  136230  136236  136240  136246  136248  136252  136258  136260  136266  136272  136276  136278  136282  136288  136290  136296  136300  136302  136306  136308  136312  136314  136316  136317  136318  136320  136321  136322  136324  136326  136330  136332  136336  136338  136342  136348  136350  136356  136360  136362  136366  136372  136378  136380  136386  136390  136392  136398  136402  136408  136416  151629 

科目: 来源: 题型:选择题

12.-Can you speed it up a little?I'll be late for my flight.
-_______.I'm taking a short-cut.We'll make it on time.(  )
A.OK,I'll speed it upB.That's right
C.Take it easyD.That's all

查看答案和解析>>

科目: 来源: 题型:阅读理解

11.A recent finding has showed that blue-eyed people have already been living in Europe for at least 7,000years.
A man who lived on the Iberian Peninsula before Europeans became farmers probably had blue eyes but dark hair and skin,according to scientists who have arranged his DNA in order.This surprising combination of eye,hair and skin coloring may not have been unusual during his lifetime,but it is no longer seen among modem Europeans,reported by the journal Nature.
The man,a Neolithic hunter-gatherer known to scientists as La BranaⅠ,is of great interest to scientists because he offers a brief introduction to what was in Europeans'DNA before agriculture spread through the continent.Experts have theorized that certain genetic feature spread quickly among humans after they adopted the farming lifestyle.La BranaⅠshows that at least some of their predictions were correct.
The man's skeleton,along with that of a male companion,was discovered in 2006in a cave in what is now northeastern Spain.The site,known as La Brana-Arintero,sits about 5,000feet above sea level,and the cave provided a cold,refrigerator-like environment that preserved his DNA.
In the lab,scientists were able to remove enough DNA from a single tooth to reconstruct La BranaⅠ's entire genome (基因组).They compared it to the DNA of other ancient Europeans(including Otzi,the 5,300-year-old mummy found in an Alpine glacier) and determined that he was a closer match with hunter-gatherers than with farmers.
When it came to genes that would influence La BranaⅠ's appearance,the researchers found that their 7,000-year-old subject had versions of two skin pigment(色素) genes that are either very rare or nonexistent among Europeans today.Then they looked at other places in the genome that influence pigmentation(色素沉着)and found a mix of ancient and modern gene variants(变种).Taken together,La BranaⅠ's DNA"is likely to have resulted in dark skin pigmentation and dark or brown hair,"they wrote.
However,his DNA indicates that his eyes were most likely blue,the scientists found.This suggests that gene variants for light-colored eyes and skin did not spread together,they wrote,adding that La BranaⅠ's combination"of dark skin and non-brown eyes is unique and no longer present in contemporary European populations."Today,a blue-eyed person would typically have fair skin.To get some idea of whether La BranaⅠ's coloring was unusual for his day,the researchers will try to arrange in order the DNA of his companion,who has been named La BranaⅡ.
32.Scientists have carried out the research into La BranaⅠbecause they wanted to know
C.
A.today's Europeans'DNA             
B.the ancient agriculture in Europe.
C.European hunter-gatherers'DNA.
D.the correctness of some of their predictions
33.La BranaⅠ's skeleton was best preserved mainly because ofB.
A.the height of the cave                
B.the cold condition in the cave
C.the location of the cave              
D.the wet condition in the cave
34.Which of the following statements is TRUE?B
A.La BranaⅠ's gene variants spread together.
B.La BranaⅠ's DNA influences his appearance.
C.Today's blue-eyed person may typically have rough rather than fair skin.
D.La BranaⅠ's gene is completely different from the contemporary Europeans'.
35.The last paragraph suggests thatC.
A.La BranaⅡhas the same genome with La BranaⅠ.
B.Blue-eyed people were common in Europe 7,000years ago.
C.It's not certain that La Brana's appearance was common at that time.
D.BranaⅠ's combination of dark skin and non-brown is popular in contemporary Europeans.

查看答案和解析>>

科目: 来源: 题型:阅读理解

10.We are all attracted by magicians,who seem to be able to perform impossible acts,such as pulling white rabbits out of hats and cutting a woman in half.Like all performances,though,a magician's real secret is in practicing thoroughly before showing anyone their tricks.
Magic Matchsticks
You will need
•several matchsticks
•a handkerchief with hems (折缝) along the edges
What to do
1.Show the audience a matchstick.
2.Take a clean cotton handkerchief from your pocket,and shake it out,showing both sides to prove you are not hiding anything.
3.Wrap the matchstick in the handkerchief.
4.Ask one of the audience members to feel the matchstick inside the handkerchief,and break it.
5.Shake the handkerchief,allowing the unbroken matchstick to fall onto the floor!
The secret
Before you begin the performance,slip a matchstick into the hem of the handkerchief.When you ask someone to break the wrapped-up matchstick,make sure that they break the one hidden in the hem (when they feel it,they will think it is the one they saw you wrap into the handkerchief).
It's a good idea to have two or three handkerchiefs with matchsticks already secretly in the hems,as your audience is sure to be shocked and ask you to do the trick again.But don't let them realise that you are changing handkerchiefs,or they may become suspicious!

66.If a magician wants to succeed on the stage,he or she mustA.
A.practice the magic completely
B.have some magical matchsticks
C.recite the process thoroughly
D.keep the secret unknown forever
67.Which of the following pictures shows the step 3?B

68.One of the secrets of"Magic matchsticks"is toD.
A.make the hidden matchstick broken in the hem
B.keep audience from being suspicious during the magic
C.invite one of the audience to break the matchstick
D.confuse the two different matchsticks in the handkerchief.

查看答案和解析>>

科目: 来源: 题型:阅读理解

9.Learn To Speak French With Rocket French!
Who Wants to Learn to Speak French Fluently in the Shortest Possible Time?If You Answered"I Do!"Then Please Read on to Try My FREE 6-Day French Course.
Why do you want to learn to speak French?
★Do you live in a French-speaking country and want to communicate better?
★Are you traveling to a French-speaking country?
★Are you a home-schooled student or a parent who wants your children to learn more    quickly and easily?
★Are you a student who wants to get an A in French?
★Have you learned French before and want a fun refresher course?
Or,perhaps you just have an interest in learning the language of love!
I've designed Rocket French Premium to be the easiest to follow,fastest system for learning how to speak French available.Rocket French Premium is an interactive course that makes you want to study.Also,it's practical.You are going to be able to speak at a restaurant,at an airport,and with new friends!
It's a great experience to be able to speak with others in a different language.You will be able to enter into a different culture,a different world!Being bilingual is a very special ability,and it's a gift that we want to give to you.
So are you ready to get to know the secret of learning a new language?You're looking right at it.
Try our free six-day course.If you don't,you'll be missing a valuable opportunity to see just how much Rocket French Premium can improve your language level.Thousands of people worldwide have used our unique multimedia course to fast-track their French learning,while having piles of fun in the process.Will you be next?
Your e-mail address is required for you to receive the FREE course.You can unsubscribe any time and your e-mail address will never be given to any third party.

70.Who are target learners of Rocket French Premium?A
A.Students of French language.
B.Language experts doing research into French.
C.Teachers who are eager to improve their students'French.
D.Parents who want their children to learn French more quickly and easily.
71.Rocket French Premium describes itself asB.
A.free and funny                    B.practical and interactive
C.slow but efficient                D.suitable for everyone
72.The underlined word"fast-track"probably meansA.
A.speed up   B.pick up   C.influence   D.change
73.According to the text,which of the following statements is TRUE?B
A.A complete Rocket French course lasts for 6days.
B.Thousands of people worldwide have benefited from Rocket French Premium.
C.People will enroll in Rocket French Premium for different reasons,but everyone will be given a gift eventually.
D.Rocket French Premium mainly aims to introduce second-language learners to French culture.

查看答案和解析>>

科目: 来源: 题型:阅读理解

8.We are all attracted by magicians,who seem to be able to perform impossible acts,such as pulling white rabbits out of hats and cutting a woman in half.Like all performances,though,a magician's real secret is in practicing thoroughly before showing anyone their tricks.
Magic Matchsticks
You will need
•several matchsticks
•a handkerchief with hems (折缝) along the edges
What to do
1.Show the audience a matchstick.
2.Take a clean cotton handkerchief from your pocket,and shake it out,showing both sides to prove you are not hiding anything.
3.Wrap the matchstick in the handkerchief.
4.Ask one of the audience members to feel the matchstick inside the handkerchief,and break it.
5.Shake the handkerchief,allowing the unbroken matchstick to fall onto the floor!
The secret
Before you begin the performance,slip a matchstick into the hem of the handkerchief.When you ask someone to break the wrapped-up matchstick,make sure that they break the one hidden in the hem (when they feel it,they will think it is the one they saw you wrap into the handkerchief).
It's a good idea to have two or three handkerchiefs with matchsticks already secretly in the hems,as your audience is sure to be shocked and ask you to do the trick again.But don't let them realise that you are changing handkerchiefs,or they may become suspicious!

66.If a magician wants to succeed on the stage,he or she mustA.
A.practice the magic completely
B.have some magical matchsticks
C.recite the process thoroughly
D.keep the secret unknown forever
67.Which of the following pictures shows the step 3?B

68.One of the secrets of"Magic matchsticks"is toD.
A.make the hidden matchstick broken in the hem
B.keep audience from being suspicious during the magic
C.invite one of the audience to break the matchstick
D.confuse the two different matchsticks in the handkerchief.

查看答案和解析>>

科目: 来源: 题型:阅读理解

7.The Beijing Youth Daily on Thursday called attention to the struggles of traditional operas in China.
The newspaper said the number of unique traditional Chinese opera styles had decreased to 286from 368in 1959,with three disappearing every two years on average.Altogether,74opera styles had only one troupe left,and most were at the risk of fading away.
Xie Boliang,a professor at the National Academy of Chinese Theatre Arts,said,"It is well known that people should be held accountable for soil erosion,but why do we feel at ease when traditional operas fade away?"
Overwhelmed by modern culture and entertainment such as movies,TV programs and pop music,traditional Chinese operas have been severely marginalized.Despite being included on the state-level Intangible Cultural Heritage list,some operas still have no place to perform.
Because of the market slump (衰退) and low salaries,more traditional Chinese opera practitioners are finding other work,as are many directors and playwrights.Sun Jiazheng,chairman of the China Federation of Literary and Art Circles,said traditional operas are important carriers of Chinese culture,and should be preserved.
The State Council issued a circular in July calling for the promotion and protection of traditional Chinese operas,saying that it would allocate financial support and extend preferential policies to opera troupes and schools.

28.Which of the following words is the closest in meaning to the underlined word"marginalized"?D
A.Emphasized.B.Promoted.C.Prevented.D.Ignored.
29.Many directors and playwrights find other jobs becauseC.
A.Chinese operas are booming
B.they do not enjoy their work any more
C.the market is not promising and they get paid poorly
D.they are not considered as important inheritors of Chinese culture
30.What is the purpose of this passage?B
A.To call for more people to watch traditional Chinese operas.
B.To tell people traditional Chinese operas are facing danger.
C.To inform us of the notice of the State Council.
D.To criticize the market slump and low salaries.
31.The passage might come fromB.
A.a science fiction
B.a news website
C.the introduction of an art gallery
D.a brochure about operas.

查看答案和解析>>

科目: 来源: 题型:阅读理解

6.Biologists believe that love is fundamentally a biological rather than a cultural construct,because the capacity for love is found in all human cultures and similar behavior is found in some other animals.In humans the purpose of all the desire is to focus attention on the raising of offspring.Children demand an unusual amount of parenting,and two parents are better than one.Love is a signal that both partners are committed,and makes it more likely that this commitment will continue as long as necessary for children to reach independence.But what does science have to say about the notion of love at first sight?
In recent years the ability to watch the brain in action has offered a wealth of insight into the mechanics of love.Researchers have shown that when a person falls in love,a dozen different part of brain work together to release chemicals that trigger feelings of euphoria,bonding and excitement.It has also been shown that the unconditional love between a mother and a child is associated with activity in different regions of the brain from those associated with pair-bonding love.
Passionate love is rooted in the reward circuitry of the brain-the same area that is active when humans feel a rush from cocaine.In fact,the desire,motivations and withdrawals involved in love have a great deal in common with addiction.Its most intense forms tend to be associated with the early stages of a relationship,which then give way to a calmer attachment form of love one feels with a long term partner.
What all this means is that one special person can become chemically rewarding to the brain of another.Love at first sight,then,is only possible if the mechanism for generating long-term attachment can be triggered quickly.There are signs that it can be.One line of evidence is that people are able to decide within a second how attractive they find another person.This decision appears to be related to facial attractiveness,although men may favor women with waist-to-hip ratio of 0.7,no matter what their overall weight is.(This ratio may indicate a woman's reproductive health.)
Another piece of evidence comes from work by a psychologist at Ben-Gurion University,who found in a survey that a small percentage (11%) of people in long-term relationships said that they began with love at first sight.In other words,in some couples the initial favorable impressions of attractiveness triggered love which sustained a lengthy bond.It is also clear that some couples need to form their bonds over a longer period,and popular culture tells many tales of friends who become lovers.
One might also assume that if a person is looking for a partner with traits that cannot be quantified instantly,such as compassion,intellect or a good sense of humor,then it would be hard to form a relationship on the basis of love at first sight.Those more concerned with visual appearances,though,might find this easier.So it appears that love at first sight exists,but is not a very common basis for long-term relationships.
62.When a person falls in love,C.
A.he feels as if he were addicted to cocaine.
B.he will be committed to the beloved as long as necessary.
C.he will experience complex feelings brought on by different regions of his brain.
D.he will experience a calmer attachment form of love before he feels the extreme love.
63.We can infer from the passage thatD.
A.pair-bonding love comes from a long stable friendship.
B.the mechanism for creating long-term attachment ensures love at first sight
C.it is impossible for those ordinary-looking people to fall in love at first sight.
D.men may be attracted by a girl whose figure suggests her admirable reproductive capacity.
64.The underlined word"traits"in the last paragraph probably meansC.
A.characteristics
B.something typical in your temper
C.particular quantities in your personality
D.attitudes that show your moral standards
65.Which of the following may be the best title of the passage?B
A.The stages of passionate love
B.The science of love at first sight
C.The biological construct of pair-bonding
D.The mechanism for generating long-term love.

查看答案和解析>>

科目: 来源: 题型:填空题

5.America's holiday shopping season started on Black Friday,the day after Thanksgiving.(36)CShoppers make the most money this time of year,about 20 percent to 30 percent of all revenue all year.About 136 million people shopped during the Thanksgiving Holiday weekend.
   (37)AIn an era of instant information,shoppers can use their mobile phones to find deals.Nearly 80 percent of this year's holiday shoppers,or about 183.8 million people,shopped on Cyber Monday.(38)DOnline spending on Black Friday rose 15 percent to hit 2.7 billion this year.Cyber Monday spending increased 12 percent to 3 billion.NBC News reported that for many,shopping online was a more comfortable alternative than crowded malls.
    The shift to online shopping has had a big impact on solid shopping malls.Since 2010,more than 24 shopping malls have closed and an additional 60 are struggling.Fortune says the weakest of the malls have closed.However,the business in malls is thriving again,it adds.According to a survey,94.2percent of malls were full with shops by the end of 2014.(39)B   
The average American consumer will spend about 805ongifts.That'sabout630.5 billion between November and December-an increase of 3.7 percent from last year.
    (40)GThat goes to China's Singles'Day,celebrated on November 11,which posted record sales of 14.3 billion in 2015.

A.More and more people shop online nowadays.
B.That is the highest level in 27 years.
C.It is the busiest shopping day of the year.
D.One-in-five Americans used a tablet or smart-phone.
E.The traditional mall industry can hardly survive.
F.Cyber Monday falls on the Monday after Thanksgiving and Black Friday.
G.Nonetheless,Cyber Monday is not the biggest online shopping day in the world.

查看答案和解析>>

科目: 来源: 题型:选择题

4.-I am really sorry.I thought this was a parking lot.
-----_____ Here is your ticket.(  )
A.That's all rightB.I don't believe you
C.How dare you say soD.Sorry,that is no excuse

查看答案和解析>>

科目: 来源: 题型:选择题

3.When the old man heard his grandson was saved from the deep well,words________
him to describe his thanks.(  )
A.damagedB.discouragedC.failedD.left

查看答案和解析>>

同步练习册答案