Grab an ice cube from the freezer and place it on a table. Watch closely enough and you will see, well, not much at all. The ice cube is absorbing heat, but it is still an ice cube. Before it melts, it will draw heat from the environment to change from solid to liquid. Only then will it begin to slip and slide in a puddle of its own making.

And so to A World Without Ice by Henry Pollack, retired professor of geophysics at the University of Michigan and a member of the Intergovernmental Panel on Climate Change (IPCC) that shared the 2007 Nobel peace prize with AI Gore.

The book gets off to a slow start. You may have to work a little before being rewarded. But given time. Pollack’s account warms up and really takes off. The story he has to tell is fascinating, frightening and important.

Despite the title, this is not a book about the world without ice. Much is given over to the impact of ice in Earth’s long history, as an important force that shaped our planet’s landscape, controlled migrations and influenced cultures. Pollack takes us through Antarctic and Arctic explorations, the natural cycles that bring us ice ages and milder periods without extremes of heat or cold and the rise of climate science which, among other achievements, can recreate a history of the temperature on Earth from kilometers of ice core drilled from the polar caps.

Pollack’s intellectual power and clarity of phrase are invaluable in describing the scientific evidence for global warming, the ways in which it will affect the world, and the all-too-probable consequences. Pollack is not one to brush awkward issues under the carpel. There is serious discussion about uncertainties in climate science, and in particular the computer models used to forecast future warming. For its forensic analysis (取证分析) and strong destruction of climate sceptic (怀疑论者) arguments alone, A World Without Ice is worth keeping on a nearby shelf.

Some readers may hind Pollack’s US-centric approach occasionally grating (刺耳的). He tells of intense irrigation in southwestern Kansas, IPCC reports as big as several New York City phone directories and school-day stories from Omaha. But this is forgivable. The US is uniquely placed to act on climate change but faces a significant barrier in the shape of the outdated. influential, oil-funded anti-climate change lobby (游说议员的团体).

Thoughtful throughout, Pollack occasionally delivers paragraphs that stay with you long after closing the book. On the subject of the book itself, he writes: “Nature’s best thermometer (温度计), perhaps its most sensitive and unambiguous indicator of climate change, is ice, When ice gets sufficiently warm, it melts. Ice asks no questions, presents no arguments, reads no newspapers, listens to no debates. It is not burdened by ideology and carries no political baggage as it crosses the threshold (门槛) from solid to liquid. It just melts.”

A World Without Ice is a call to arms. Debates about which mitigation (减缓) strategies might give us the best chances of reducing our emissions miss the point, Pollack says. If we want to avoid the worst that climate change may bring, we need “every horse in the stable pulling together, and as hard and as fast as possible”.

Pollack’s argument is attractive, persuasive and deeply upsetting, no matter the climate change tiredness that unavoidably sets in as a consequence of endless media coverage of global warming. The author’s final warning comes from Lao Tzu, an ancient Chinese philosopher: “If you do not change direction, you may end up where you are heading.”

Pollack leaves us in no doubt as to where that is.

1.A World Without Ice mainly focuses on_______.

A.the adventures to the freezing Poles

B.the impact of ice on human and nature

C.the role of climate science in drilling ice

D.the process of ice cube turning into water

2.We can learn that A World Without Ice________.

A.brings us to the core of the issue at the very beginning

B.convinces sceptics of the truth about climate change

C.gives an in-depth analysis of global warming

D.gets funded by anti-climate change lobby

3.Why does Henry Pollack think ice is nature’s best thermometer?

A.Ice is a reminder of peaceful co-existence.

B.Ice is a common topic of the media coverage.

C.Ice is a controversial issue in political debates.

D.Ice is a clear indicator sensitive to climate change.

4.The underlined sentence in Paragraph 8 probably means the book＿____.

A.urges us to make joint efforts to fight climate change

B.advocates addressing climate change by armed forces

C.recommends debating on strategies to reduce emission

D.calls for separate and tough actions in a timely manner

5.What does the underlined word that in the last paragraph refer to?

A.Warning from Lao Tzu. B.Destination of a journey.

C.Effect of global warming. D.Argument on climate change.

6.What is the author’s attitude to A World Without Ice?

A.Ambiguous. B.Cautious. C.Positive. D.Skeptical.

    In the famous musical My Fair Lady, Eliza Doolittle, the poor daughter of a dustman who speaks with a thick Cockney accent, becomes the unwitting (不知晓的) target for a bet between two phonetics scholars. By the end of the musical, Doolittle is able to pronounce all of her words like a member of the British elite, fooling everyone at an embassy ball about her true origins.

It’s hard to imagine a version of My Fair Lady set in the U.S. because, unlike the British, Americans seem either unwilling or unable to honestly acknowledge their own social class. But a new set of scientific studies conducted by Michael Krauss and his colleagues at Yale University show that Americans find it easy to make distinctions about other people’s social class just by listening to them speak.

In one study, the researchers asked 229 people to listen to 27 different speakers who varied in terms of their age, race, gender and social class. The participants heard each speaker say a total of seven different words. Based on just this short audio, participants were able to correctly identify which speakers were college-educated 55 percent of the time-more than what would be expected by chance. A major limitation of this study, however, was that it used college education as a criterion for social class.

Then in another experiment, 302 participants were asked to either listen to or read transcripts (文本) from 90 seconds of recorded speech in which the speakers talked about themselves without explicitly mentioning anything about their social class. Participants were asked to judge what they thought the social classes of the speakers were by using a 10-rung ascending (上升的) ladder of increasing income, education and occupation. They found that participants who heard the audio recordings were more accurate in judging where the speakers fell in terms of their social status.

To show whether these inferences have real-world consequences, Kraus and his colleagues ran another experiment. They recruited 274 participants, all of whom had past hiring experience, to either listen to the audio or read a transcript of the content. The findings showed that participants were able to accurately judge the social class of the candidates and that this effect was stronger for participants who had heard the audio recordings. In addition, participants judged the higher-class candidates as more competent, a better fit for the job and more likely to be hired.

Taken together, this research suggests that despite our discomfort about the topic, Americans are able to easily detect one another’s social class from small snippets of speech. Moreover, we use this information to discriminate against people who seem to be of a lower social class. This research identifies social class as another potential way that employers may discriminate against candidates, perhaps without even realizing it.

1.The author introduces his topic by______.

A.making a comparison

B.justifying an assumption

C.explaining a phenomenon

D.relating the plot of a musical

2.What do the experiments suggest?

A.Participants tend to make objective judgments.

B.The content rather than the speaking style is reliable.

C.One’s social class can be inferred from how they speak.

D.Education and income are the main criteria for social status.

3.According to the passage, judgments about the way people talk_____.

A.disagree with the facts

B.affect hiring decisions

C.favour competent people

D.hardly provide reference

4.What can be learned from the last paragraph?

A.Americans are slow to judge social classes.

B.People in a low social class lose jobs easily.

C.Social-class discrimination is hard to address.

D.Speech can create social-class discrimination.

    Pleasingly, a new study supports one of my favourite insights about writing, or getting any creative work done-though I’m pretty sure that wasn’t intentional, since the researchers were actually studying traffic jams. Jonathan Boreyko, an American engineering professor, was crawling along in his car one day, observing how drivers naturally bunch up at red lights, leaving mere inches between vehicles. Their motivation isn’t a mystery: the closer you are to the car ahead, you’d assume, the better your chances of squeezing through before the light goes back to red, and the sooner you’ll reach your destination, even if you also increase the risk of collisions.

But you’d assume wrong. When Boreyko and a colleague recreated the traffic-light scenario (场景) on a special test track, they found that drivers who bunched up made no swifter progress. True, they stopped slightly closer to the light. But it also took them longer to resume (继续) moving safely, and these two factors canceled each other out. “There’s no point in getting closer to the car in front of you when traffic comes to a stop.” Boreyko concluded.

This is true of writing or similar work. People never rest in urgent pursuit of their goals. Yes, it all looks impressively productive. But as the psychologist Robert Boice argues, racing to get a task completed generally brings a cost that outweighs the benefit. You tire yourself out, so you can’t shine the next day. Or you neglect so many other duties that you’re forced to take an extra day to catch up. Or you start damaging work you already produced — which is why the novelist Cabriel Carcfa Marqucz said he gave up writing in the afternoon: he wrote more, but he had to redo it the next morning, so the overall effect was to slow him down. That’s also why Boice insists that when you’re writing on a schedule, it’s as important to be disciplined about stopping as starting, even if you’re on a roll.

Clearly, this is all a convenient way to feel superior to people who put in more hours. But that doesn’t mean it’s untrue. Indeed, it’s scary to ask what role impatience play in your life in general: how much of each day we spend leaning into the future, trying to get tasks “out of the way”, always focused on the destination, metaphorically (隐喻地) inching closer and closer to the bumper of the car ahead. None of it gets us anywhere faster. It’s also no way to live.

1.Which of the following best summarizes the finding of Boreyko’s study?

A.The sooner, the better.  B.More haste, no extra speed.

C.The early bird catches the worm. D.Chances favour the prepared mind.

2.The author wants to tell us that in creative work____.

A.tight planning avoids chaos B.overwork polishes our images

C.impatience almost never pays D.afternoon time is less productive

3.The author writes the passage to______.

A.advise people to stop racing B.instruct people to write skillfully

C.persuade people to treasure time D.warn people to obey traffic rules

1.What do the four items have in common?

A.They are waterproof.

B.They are of the same price.

C.They are made of fiberglass.

D.They are on sale on Amazon

2.From the passage, we know_______.

A.the handbag raincoat is of low quality

B.the short boots are suitable for urban living

C.the waterproof phone case has different sizes

D.the travel umbrella can be folded using a button

    I joined the army as an infantryman (步兵) instead of as a helicopter pilot because I only had the literacy (读写) level of an 11-year-old. I had no idea that I had a reading level that_______; I had just _______words when I didn’t know them, and usually ended up getting them wrong.

It was just before I turned 19 that I _______ my very first book. I can vividly remember the sense of _______and achievement I felt. It was meant for primary school children but I didn’t _______. I had read a whole book, and I was _______. From then on I read anything and everything I could get. I just wanted to get as much_______ as I could.

I learned in those days at the _______education centre. There are always people looking forward to helping you and _______you stuff. But you are never going to progress __________you keep learning. The unbelievable educational__________that the army offers make it one of the few places that can help you climb up the ladder of social classes in the UK.

For me, improving my literacy level had another more surprising__________. When I left the army, I was asked to write a(n)__________of the Bravo Two Zero Mission and that led to the unexpected career change of becoming a(n)__________.

I have spent quite a bit of time over the past few years__________schools, and workplaces, as well as army bases and businesses, to talk about my past and__________others to start reading and writing like me. The__________I give to all the people that I chat to is that if I can do it, anyone can. If that is a message that even one of them accepts and__________, then it has been__________. My experience shows that the best soldier out there is the one with a __________card.

1.A.high B.new C.low D.senior

2.A.gone over B.made up C.put down D.taken back

3.A.wrote B.received C.bought D.read

4.A.pride B.beauty C.duty D.security

5.A.panic B.care C.doubt D.agree

6.A.depressed B.puzzled C.trapped D.hooked

7.A.wealth B.knowledge. C.support D.freedom

8.A.community B.nursery C.army D.health

9.A.showing B.selling C.lending D.teaching

10.A.unless B.until C.though D.since

11.A.expenses B.backgrounds C.opportunities D.requirements

12.A.trouble B.burden C.outcome D.challenge

13.A.email B.diary C.scheme D.account

14.A.athlete B.typist C.author D.reporter

15.A.visiting B.attending C.constructing D.inspecting

16.A.permitting B.encouraging C.commanding D.preferring

17.A.message B.story C.impression D.influence

18.A.changes B.uses C.questions D.ignores

19.A.controversial B.arbitrary C.ridiculous D.worthwhile

20.A.library B.credit C.business D.fitness

—Could Martha afford the money to go on a trip abroad with us?

—I’m afraid not. She is ___________ at the moment.

A.physically challenged B.between jobs C.not all there D.all ears

Our village is making efforts to _________its development pattern to promote green growth.

A.squeeze B.compromise C.transform D.differentiate

Nantong has become one of the most_____cities in the Yangtze River Delta through innovation.

A.dynamic B.conservative C.primitive D.ethnic

Our school often organizes various after-school activities, _____our stress to some degree.

A.to relieve B.relieved C.having relieved D.relieving

_______for the wrong turning on the highway, I would be having dinner with my friends now.

A.Had it not been B.Were it not C.It had not been D.It were not

The building of an ecological civilization has entered a critical period, _________that requires more quality products to meet people’s demand.

A.it B.that C.one D.the one

—You are late for the morning assembly again!

—I’m terribly sorry. I _______a contract almost the whole night.

A.was drafting B.have been drafting C.have drafted D.had drafted

—I am going to the library. Do you have any books_______?

—No, but thank you all the same.

A.to return B.returned C.to be returned D.returning

With scenic spots exploring new projects, ticket sales will no longer be the only source of______.

A.revision B.revenue C.revolution D.review

Since COVID-19 has largely been brought______, people in China are returning to their work in an orderly manner.

A.under control B.under way C.under discussion D.under threat

A research project is quite different from homework__________you know there is a solution.

A.which B.where C.what D.that

Our high-tech zone has__________guidelines for sustainable development in the next five years.

A.fallen for B.got over C.broken down D.laid out

I can’t figure out why some foreigners must go out_______staying at home is the safest way during the outbreak of the virus.

A.until B.before C.unless D.when

—Can we make it to the concert with such heavy traffic?

—Absolutely not.The pianist_______for about half an hour when we arrive.

A.will be playing B.has played C.will have played D.has been playing

Group activities can help children gain the concept_______team spirit is crucial to more achievements.

A.that B.where C.what D.which

听下面一段独白，回答以下小题。

1.Who is the speaker talking to?

A.Guest speakers.

B.Club members.

C.University students.

2.What does the speaker suggest doing?

A.Comparing the clubs before joining one.

B.Remembering to bring the library card.

C.Trying to join a free club.

3.What information is on the registration document?

A.A book list for each course.

B.The names of the departmental heads.

C.The classroom numbers for each class.

4.Where should one fix any accommodation problems?

A.The secretary office. B.The academic department. C.The university administration.

听下面一段较长对话，回答以下小题。

1.When did Karina become interested in cooking?

A.When she helped her parents in the hotel kitchen.

B.When she made food for herself at home.

C.When she worked in a restaurant.

2.What happened to Karina in the cooking competition?

A.She won one of the prizes.

B.Her dishes were thought highly of.

C.She realized her talent for cooking.

3.Why did a top chef offer to train Karina?

A.He needed someone to work on Saturdays.

B.A famous person liked the food she made.

C.She was quick at learning to cook.

4.What does Karina like to do in her free time?

A.Stay with her family. B.Create new salads. C.Eat out.

听下面一段较长对话，回答以下小题。

1.What happened in the late 1970s?

A.Return of the Jedi appeared.

B.Science fiction movies became popular.

C.There was a long gap in movie releases.

2.When did The Phantom Menace come out?

A.In 1980. B.In 1984. C.In 1999.

3.What are the speakers discussing?

A.When Star Wars movies were released.

B.What effects Star Wars movies have.

C.How Star Wars movies were made.

听下面一段较长对话，回答以下小题。

1.What do we know about the man?

A.He often borrows things from the woman.

B.He wants to use the woman’s camera.

C.He needs to buy the best suit.

2.How will the man go to attend the wedding?

A.By motorcycle. B.By taxi. C.By car.

听下面一段较长对话，回答以下小题。

1.What will the boy do on Saturday?

A.Go shopping. B.Have a picnic. C.Ask friends round.

2.What will the woman buy tomorrow?

A.Sausages. B.Salads. C.Pies.

What is the probable relationship between the speakers?

A.Boss and employee. B.Salesperson and customer. C.Interviewer and interviewee.

How does the woman probably feel?

A.Apologetic. B.Worried. C.Annoyed.

What is the woman going to wear?

A.A skirt and a sweater. B.Jeans and a sweater. C.A shirt and a skirt.

How much will the speakers pay for the shoes?

A.￡35. B.￡25. C.￡15.

In which season did the woman get to Prague?

A.In summer. B.In autumn. C.In winter.