3 . As wildfires have intensified in recent years, scientists have begun to catalog the ways the massive events influence weather — but so far, all have looked at either enormous or relatively small scales.

But during 2018’s destructive fire season in California — at the time, the worst on record — Jiwen Fan started to wonder: Could the ever more frequent and intense fires raging in the western United States affect weather not just right next door, but as much as 1500 miles downwind?

Major weather patterns in the U.S. tend to travel from west to east along with the prevailing winds. Fan noticed that just a few days after California’s Carr Fire kicked off in mid-July — shockingly early in the expected fire season — a massive days-long storm struck the High Plains states like Wyoming and Colorado with flooding rains, baseball-sized hail, and 90-mile-an-hour gusts. The storm caused over $100 million in damages. Was it possible the two were connected?

Her team had the exact right tools to investigate the question. First, they dug through 10 years of weather and fire data to find examples of other big conflagrations (大火) occurring right before major storm events. The pairing was actually quite rare. That’s because storm season in the Central U.S. is centered around early summer; in the past, that season was winding down by the time wildfire season increased in August and September. But wildfires have been igniting earlier and earlier, pushed forward by climate change-driven drought and heat. Since 2010, the team found several big central storms that coincided with major Western fires.

They focused on a 2018 storm. Using a weather model that added in the effects of heat and smoke emitted from the burns, they simulated days-long storm event in several different ways. As the real situation had been, with massive fires burning in the West; as if those fires didn’t exist; and another set of experiments that included and excluded the effect of some smaller local fires that had been burning at the time.

The differences were dramatic: The combined impact from the faraway western fires and the local ones boosted the occurrence of heavier rainfall — where more than about 0.8 inches of rain fell in an hour — by 38 percent. The outbursts of big hail, with hailstones larger than two inches — nearly the size of a baseball— happened 34 percent more in the fiery conditions. But the far-off fires had a much larger effect.

“The impact is very significant,” says Fan. “That was a little surprising.”

1. What’s the study of Jiwen Fan and her team mainly about?

A．The effect of conflagrations on the weather of other areas.

B．The scale of all the conflagrations.

C．The number of all the conflagrations that happened in 2018.

D．The cause of the California’s Carr Fire.

2. Why was it rare for Fan’s team to pair big conflagrations with major storm events?

A．Because they were in lack of labor to dig through all the data.

B．Because storm season in the Central U.S. isn’t in line with the wildfire season.

C．Because wildfires usually take place in the early summer.

D．Because wildfires are pushed forward by big storms.

3. How did Fan and her team conduct their study?

A．They invited other experts to do experiments with them.

B．They interviewed a lot of local people and analyzed the data they collected.

C．They simulated storm event in different ways by using a weather model.

D．They observed the real situations and calculated thoroughly.

4. What does the last sentence “That was a little surprising.” imply?

A．The number of the big wildfires was beyond the team’s expectation.

B．The size of the hailstones was definitely incredible.

C．The occurrence of heavy rainfall shocked Fan’s team.

D．The conflagrations did have great effect on the occurrence of storm in other areas.

4 . China becomes a world leader in clean technology by fighting environmental pollution, sharing experience.

Erik Solheim, former executive director of the United Nations Environmental Programme, said he is __________ with China’s phenomenal achievements over the past decade in fighting environmental pollution and climate change, and in its march toward __________ development.

This is very __________ to his Twitter followers. Solheim’s latest tweets include one about China ranking first globally in planted forests and forest coverage growth, __________ a quarter of the world’s new forests in the past decade; one about China producing 60 percent of global solar energy last year and 80 percent of solar panels; and another highlighting the fact that 80 percent of the world’s new offshore wind capacity was installed in China last year.

He believes that it’s time for the rest of the world to __________.

For Solheim, who is also the former Norwegian Minister of the Environment and Minister of International Development, China’s achievements on the climate and environmental fronts all started with its fight against__________.

“People wanted to see beautiful skies over their cities,” he told China Daily. “The __________ fast reduction in air pollution in Chinese cities over the last decade shows how fast China can act. This has now spilled over into renewable energy, nature protection, electric mobility, tree planting and a lot more. Today, China is the world leader in all __________ technologies.”

The latest __________ from China’s Ministry of Ecology and Environment prove Solheim’s observations that the country is rapidly switching to a more sustainable path.

Minister of Ecology and Environment Huang Runqiu told a news conference on Sept 15 that the country’s toughest measures and greatest progress on the ecological and environmental front have occurred in the last decade.

He said that __________ painstaking efforts to combat pollution, clear waters and blue skies have become more commonplace.

While poor air quality used to be a source of frequent public complaints, the average __________ of hazardous airborne PM2.5 particles dropped from 46 to 30 micrograms per cubic (立方的) meter between 2015 and last year.

About 87.5 percent of days last year were rated as having good air quality, up 6.3 percentage points from 2015, making China the country with the biggest __________ in air quality in the world.

In the last decade, the __________ of water at or above Grade III in the country’s five-tier water quality system rose 23.3 percentage points to 84.9 percent, close to the levels in developed countries. Carbon intensity, or carbon emissions per unit of GDP, has declined by 34.4 percent, with coal __________ for 56 percent of total energy consumption, compared to 68.5 percent a decade ago.

China has has legislated or revised roughly 30 laws and regulations, some of which focused on water resource protection, including the Water Pollution Prevention and Control Law, which was modified in 2017, and the Yangtze River Protection Law, which __________ last year.

1.

A．confused

B．impressed

C．obsessed

D．connected

2.

A．available

B．accessible

C．sustainable

D．substantial

3.

A．evident

B．attractive

C．invisible

D．unique

4.

A．donating

B．contributing

C．manufacturing

D．distributing

5.

A．fall behind

B．put forward

C．look up

D．catch up

6.

A．pollution

B．environment

C．ecology

D．emission

7.

A．probably

B．inevitably

C．incredibly

D．traditionally

8.

A．biological

B．advanced

C．far-reaching

D．green

9.

A．study

B．figures

C．technologies

D．innovation

10.

A．thanks to

B．despite

C．regardless of

D．other than

11.

A．height

B．length

C．concentration

D．weight

12.

A．obstacle

B．improvement

C．contribution

D．cultivation

13.

A．quality

B．flavor

C．deposit

D．proportion

14.

A．accounting

B．making

C．looking

D．applying

15.

A．took effect

B．took place

C．took to

D．took in

6 .

A．The summers are even hotter in Hong Kong.

B．He wishes that he were in Hong Kong last summer.

C．It is difficult to compare the summers in different places.

D．Hong Kong is the hottest place in the world.

7 . 选用适当的单词或短语补全短文。

A.medical       B.relieve       C.shelter       D. growing       E. alternative       F. doubled       G.fantastic       H.marketing       I. present       J. conducts       K.practically

More and more cats and dogs are getting the human treatment. There are pet spas, pet therapists and pet clothes. And the latest trend is pet hospices(临终关怀医院)。

Around the United States, a growing number of vets are offering hospice care and       1    it as a way to give pets ---and their owners---a less anxious, or comfortable passing. The approach, in the spirit of the human variety, involves stopping aggressive     2     treatment and give painkillers and anti-anxiety drugs. Unlike in hospice care for human, euthanasia(安乐死) is a(n)     3    ---and in fact, is a big part of this end-of-life care. When it’s time, the vet    4    it in the living room, bedroom, or wherever the family feels comfortable.

It’s part of a vet’s job to     5     pet owners’ guilt, give them an emotional bridge to their pets’ death and let them grieve at home---rather than in a clinic or animal     6     . The closeness    7    costs 25 percent or more than euthanasia in a clinic, but vets and their clients say it can be worth it.

“They’re in their own environment, not only the pets but the owners as well,” said Dr. Gardner, co-founder of Lap of Love, one of the leaders in this small but     8     market, “Other people and pets are welcome to be     9     . I’ve been to some houses where the owners had barbecues for the dog and invited me and the neighbours. The dog was the man of the hour.”

Dr. Michele Price, a vet in Northern Virginia whose in-home hospice care business has     10     since 2009, got a call about a Labrado named Champ. The dog had received per hospice care for months until recently, when he took a sharp downward turn. Before Dr. Price set up for the euthanasia, pet owners hugged Champ on a quilt next to the fireplace and told him what a good dog he was. As for Champ, “He fall asleep. That was the last thing he remembered.”

8 . Directions: After reading the passage below, fill in the blanks to make the passage coherent and grammatically correct. For the blanks with a given word, fill in each blank with the proper form of the given word; for the other blanks, use one word that best fits each blank.

A massive fire tore through the main market in the city of Hargeisa in northern Somalia overnight, injuring about two dozen people and     1    (destroy) hundreds of businesses, officials have said.

Images     2    (post) on social media showed flames and huge clouds of smoke in the night sky over the city, the capital of the breakaway region of Somaliland. The cause of the blaze     3     devastated the sprawling Waheen market, the lifeblood of the city and home     4     an estimated 2,000 shops and stalls, is not yet known.

Officials said it started on Friday evening but was largely brought under control by dawn on Saturday, although some small areas were still burning.

“The town has never witnessed such a massive calamity,” Hargeisa’s mayor, Abdikarim Ahmed Mooge, told reporters at the scene. “This place was the economic centre of Hargeisa and     5     the firefighters’ best efforts made to contain the fire, the market is destroyed.” He said the blaze could have been brought under control before causing such extensive damage but that the firefighters’ attempt     6    (deny) due to access problems. The vast market is a crowded warren of shops and makeshift stalls, with no proper streets, only narrow pathways.

The Somaliland president, Muse Bihi Abdi, said during a visit to Waheen     7    about 28 people, nine of them women, were injured, but that so far no loss of life     8    (report). He said the government would be releasing one million dollars to help with the emergency response to the disaster.

Hargeisa chamber of commerce chairman Jamal Aideed said the loss of the market was immense     9     it accounted for 40% to 50% of the city’s economy.

“I have lost everything tonight, this fire was the biggest I have ever seen in my life,” said market trader Bashi Ali. “I had several businesses in the market and all of them burned to ashes.     10    we can learn from this disaster is to plan the market well,” he added.

9 .

Wolves have a certain undeserved reputation: fierce, dangerous, good for hunting down deer and farmers’ livestock. However, wolves have a softer, more social side, one that has been embraced by a heart-warming new initiative.

In a bid to save some of Europe’s last wolves, scientists have explored the willingness of these supposedly fierce creatures to help others of their kind. Female wolves, the scientists have discovered, make excellent foster parents to wolf cubs that are not their own. The study, published in Zoo Biology, suggests that captive-bred wolf cubs(幼兽) could be placed with wild wolf families, boosting the wild population.

The gray wolf was once the world’s most widely distributed mammal, but it became extinct as a result of widespread habitat destruction and the deliberate killing of wolves suspected of preying on livestock. Fear and hatred of the wolf have since become culturally rooted, fuelled by myths, fables and stories.

       In Scandinavia, the gray wolf is endangered, the remaining population found by just five animals. As a result, European wolves are severely inbred and have little genetic variability（变异性）, making them vulnerable to threats, such as outbreaks of disease that they can’t adapt to quickly. So Inger Scharis and Mats Amundin of Linkoping University, in Sweden, started Europe’s first gray wolf-fostering program. They worked with wolves kept at seven zoos across Scandinavia. Eight wolf cubs between four and six days old were removed from their natural parents and placed with other wolf packs in other zoos. The foster mothers accepted the new cubs placed in their midst.

The welfare of the foster cubs and the wolves’ natural behavior were monitored using a system of surveillance cameras. The foster cubs had a similar growth rate as their step siblings in the recipient litter, as well as their biological siblings in the source litter. The foster cubs had a better overall survival rate, with 73% surviving until 33 weeks, than their biological siblings left behind, of which 63% survived. That rate of survival is similar to that seen in wild wolf cubs. Scientists believe that wolves can recognize their young, but this study suggests they can only do so once cubs are somewhere between three to seven weeks of age.

If captive-bred cubs can be placed with wild-living families, which already have cubs of a similar age, not only will they have a good chance of survival, but they could help dramatically increase the diversity of the wild population, say the researchers. Just like the wild wolves they would join, these foster cubs would need protection from hunting. Their arrival could help preserve the future of one of nature’s most iconic and polarizing animals.

1. What’s the theme of the passage?

A．Giving wolf cubs a new life	B．Foster wolf parents and foster cubs
C．The fate of wild wolves	D．Changing diversity of wild wolves

2. Which of the following flow chart best demonstrates the relationship between the wolves?

A．	B．
C．	D．

3. Which of the following statements is true?

A．Female wolves are willing to raise wolf cubs of 3 to 7 weeks old.

B．Foster cubs are accepted by foster parents and are well bred.

C．Man’s hostile attitude towards wolves roots in myths, fables and stories.

D．Foster cubs and their biological siblings have similar growth rate and survival rate.

4. What’s the purpose of the research?

A．To help wolves survive various threats

B．To improve wolves’ habitat and stop deliberate killing

C．To save endangered wolves by increasing their population

D．To raise man’s awareness of protecting wolves

10 . Directions:Complete the following sentences by using the proper form of the words or expressions   given in the frame.Each one can only be used once.

A. capable        B. effectiveness       C. employing        D.exposure          E.famously           F. joining          G. limitation        H. minimal       I.precisely        J.recognizing       K.worthwhile

Clean Air Act

The air in modern homes and offices is pretty clean,but not as clean as it might be.Often it contains small amounts of volatile(挥发性的）,poisonous,organic compounds.Long-term    1     to these is a bad thing,so clearing them out of the air people breathe is widely accepted as     2    

Finding an effective way to do so has proved difficult.But Stuart Strand, Long Zhang and Ryan Routsong, of the University of Washington,in Seattle,think they have succeeded,As they report in Environmental Science and Technology, their method involves     3     a gene from a rabbit into a popular indoor plant nicknamed Devil's vine—a type of ivy hat is so called because it is    4     difficult to kill.

The idea of     5     plants to de- pollute   the atmosphere inside buildings has been around for decades-but has met with only qualified success. One experiment involving unmodified spider plants,for example,showed that they are indeed     6     of removing formaldhyde (甲醛) from the air.The     7     is that to make much of a difference in a space as large as a house would require turning most of the rooms into spider-plant forests.

Dr Strand, Dr Zhang and Mr Routsong thus sought something suitably transgenic ( 转 基 因 的),but that does not flower indoors. The plant they settled on was Devil's vine,     8     because of its toughness.With the help of a bacterium,they were able to ferry the rabbit version of the gene into the plant's chromosomes(染色 体),and thus to,engineer a type of Devil's vine able to produce an air-cleaning substance. To test the     9     of their idea, the researchers put their modified ivy to work inside greenhouses filled with air containing high levels of harmful substances.The plants performed well,reducing the harmful substances in air to     10    .