1 . How will the weather probably be tomorrow?

A．Sunny.

B．Rainy.

C．Snowy.

2 . In a recent study, researchers at Germany’s Technical University of Munich（TUM）find that trees in cities can grow up 25% faster than their country cousins. This is believed to be a direct result of the heat island effect, which is a situation where the temperature of the city is higher than the nearby rural areas. It’s mostly caused by the fact that buildings, roads, and many other things in the city take in a lot of sunlight and send out the sun’s heat more than natural landscapes such as forests and water bodies. A secondary cause is waste heat produced by heavy uses of energy.

For the study, TUM researchers studied 1,400 trees in 10 cities around the world, which were found in both city centers and nearby rural areas. Based on tree ring study, researchers found that city trees are growing faster than their rural cousins. But before the 1960s, both city and rural trees grew at about the same speed.“We can show that city trees of the same age are generally larger than rural trees because they grow faster. While the difference is about a quarter at the age of 50, it is still just under 20% at a hundred years of age,” lead author Hanz Pretzch says.

Researchers from TUM also found that in some cities, higher-than-normal temperatures have led to growing seasons that are more than eight days longer than the norm. This sounds like a good thing. But while fast -growing city trees are busy taking in CO₂and providing relief from the heat, they’ re also aging and dying at a faster speed than rural trees. As a result, these trees need to be replaced and replanted more frequently.

Considering the valuable “ecosystem services” that city trees provide, planning and management should follow to make a change with today’s tree growth speed. Pretzch and his team set out to perform the study largely in response to United Nation’s report that the world’s cities will experience population growth of more than 60% by 2030. And with such fast growth comes a great need for city trees that make these cities better places to live in.

1. What does the first paragraph mainly tell us?

A．Cities need more trees to reduce the temperatures.

B．Humans lead to trees growing faster in cities.

C．Trees need scientific planting in rural areas.

D．Greenhouse effect is too serious in cities.

2. What can we learn from the findings of the research?

A．Rural trees live twice longer than city trees.

B．City trees live for about 100 years at most.

C．Rural trees live much longer now than in the 1960s.

D．City trees grow faster at early years.

3. What is the result of city trees growing faster?

A．Cities suffer more easily from natural disasters.

B．The temperatures in cities will fall greatly.

C．City trees have a shorter life circle.

D．More people move to rural areas.

4. Which of the following might be the best title for the text?

A．Taking better care of urban trees

B．Planting more trees in urban areas

C．More researches to be done on urban trees

D．Urban trees growing faster than rural trees

3 . 听下面一段独白，回答以下小题。
1. Where will the recycling campaign be held?

A．In a school.

B．In a radio station.

C．In a recycling center.

2. When will the recycling campaign begin?

A．At 8:00 am on July 8th.

B．At 10:00 am on July 10th.

C．At 10:00 am on July 18th.

3. Why does the speaker ask the listeners to bring cans?

A．To use them to play games.

B．To put them in the special recycling bins.

C．To learn how to sort household rubbish.

4. How can the listeners know more about the recycling campaign?

A．By making a call.

B．By listening to the radio.

C．By reading the newspapers.

4 . The latest thing in architecture is green buildings—covering walls and roofs with a carpet of plants to prevent heat, absorb rain and provide a home for wildlife. Many such buildings need complex systems for holding and irrigating the soil.    1    

Ivy is a group of evergreen climbing plants, whose power to live is hard to beat. Firstly, it can live in almost any surroundings, whether in shade or full sun.    2    It grows well in both dry and damp soil. Moreover, it doesn't need supports as it grows aerial roots that can be attached to most things. For these reasons, ivy can be widely grown to beautify an ugly wall or a fence.    3    It is a heaven for bees and butterflies in summer and its berries are a valuable food source for birds in winter.

However, there are some concerns about growing ivy. Ivy has a reputation for damaging buildings, but according to the UK's Royal Horticultural Society, this doesn't usually happen unless the walls already have cracks.    4    But Blanusa at the University of Reading, UK, who has examined the effects of plant climbers, finds that ivy raises humidity next to the wall by only a small amount.

    5    Once ivy has been in the ground for a few years, it can grow out of control. Just don't let it get the better of you.

A．Growing ivy can bring added benefits.

B．Therefore, I strongly oppose growing ivy.

C．The other fear is that it can make walls damp.

D．Besides, it can be tolerant of various kinds of soil.

E．Anyway, you do need to be careful in growing ivy.

F．An ivy-covered wall will slightly warm a room in winter.

G．However, there is a much easier approach: growing some ivy.

5 . When Simon Cane was in the second grade, he began learning about all the ways humans have an impact on the environment and really took those classroom lessons to heart in a way that set him apart from his schoolmates at his elementary school, P. S. 81, in the Bronx. “He told me we drove too much and made too much pollution,” his dad, Jonathan Cane, told Runner’s World. So Simon convinced his parents to start hanging their clothes to dry, taking the stairs instead of elevators, and other “green” measures.

“For much of kindergarten and first grade I rode my bike to Simon’s school with him on the back,” Jonathan said. “We had a lot of fun being outdoors. We’d stop to give our dog treats and generally enjoyed it.” As Simon got bigger, though, it wasn’t practical for him to ride on his father’s back, but it also didn’t make sense to ride together — both because of safety concerns and because there was no place to put away Simon’s bike. So, most of the time they drove the 1. 5 miles to school.

But in 2019, when Simon was going into third grade, the 8-year-old came up with a new way to help the planet: running the 1. 5 miles to P. S. 81. And Jonathan promised his son he’d join him for as long as he wanted.

“We did a test run one day in August, and decided to give it a go. To be honest, I thought he’d blink (眨眼)after it got really cold or rainy, but he never did,” Jonathan said. He recalled one day when the weather was particularly bad. “It’s really raining out there today,” he told Simon. “And Simon said, ‘Well then we’re going to get wet!’ He took pride in toughing it out, and it became a really fun family routine.”

Since the start, Simon has run with his dad and their black dog, Lola, and has even inspired his mom, Nicole Sin Quee, to join in. They soon became known as “the family that runs to school”.

1. What makes Simon different from his classmates?

A．Washing his clothes by himself.	B．Taking many classes after school.
C．Raising strange questions in class.	D．Taking green measures to protect the environment.

2. How did Simon usually go to school in second grade?

A．By car.

B．By cycling.

C．By running.

D．By school bus.

3. What can be inferred from paragraph 4?

A．Simon has trouble with his eyesight.	B．Simon is really stubborn and inflexible.
C．Simon is much tougher than expected.	D．Simon didn’t get support from his father.

4. What can be the best title for the text?

A．The Best Way to Go to School

B．Father and Son Run for the Environment

C．A Teenager Keeps Running to Inspire Father

D．Three Inspiring Running Athletes to Protect the Environment

6 . Some of the greatest problems we face today are concerned with the gradual destruction of our environment. Brown clouds; wildlife _________; polluted water. These _________ all seem so huge. So my family does what we can. We take cloth bags to stores instead of using plastic bags. We walk where we don’t have to _________.

But does it do any good?

I recently learned something about flamingos. These beautiful birds gather in _________ groups of a thousand or more. Every year, when the time _________ for migration, a few flamingos start the process by taking off from the lake. But _________ of the others seem to notice, so the tiny group returns.

However, the next day they _________ again. This time a few more struggle along with them, but the vast majority still _________ no attention, so these pioneers come back.

The _________ continues for several more days. Every time a few more birds join in but, __________ the thousands of others still take no __________ , the great migration plan is once again __________.

Then one day something __________. The same small group of birds takes wing and a tiny number more join in, just as before. And this time their total number, though still quite __________, is enough to tip the balance. As one, the whole group takes flight and the migration __________ . What a __________ sight it must be – thousands of flamingos taking to the sky at once!

A few can make a __________. It’s true that all of the great problems of the world have been solved because of the __________ efforts of a few.

If you believe in a cause, don’t __________! Others will someday take notice and together we will __________ even our greatest problems.

1.

A．protection

B．extinction

C．migration

D．separation

2.

A．questions

B．costs

C．examples

D．problems

3.

A．drive

B．run

C．cycle

D．stand

4.

A．tiny

B．different

C．huge

D．similar

5.

A．comes

B．passes

C．varies

D．moves

6.

A．all

B．any

C．none

D．most

7.

A．gather

B．try

C．sing

D．appear

8.

A．attract

B．require

C．escape

D．pay

9.

A．plan

B．trend

C．activity

D．movement

10.

A．since

B．though

C．unless

D．while

11.

A．responsibility

B．notice

C．chance

D．measure

12.

A．put off

B．cut off

C．carried out

D．worked out

13.

A．approaches

B．works

C．changes

D．disappears

14.

A．significant

B．reasonable

C．adequate

D．small

15.

A．continues

B．delays

C．finishes

D．begins

16.

A．familiar

B．strange

C．magnificent

D．unrealistic

17.

A．point

B．decision

C．difference

D．mistake

18.

A．useless

B．tireless

C．extra

D．special

19.

A．give up

B．give in

C．give away

D．give out

20.

A．identify

B．understand

C．predict

D．address

7 . Beginning 2020, the fifth generation of wireless technology is expected to be widely used throughout the world. The new network, called 5G, promises to give faster speeds and a higher capacity for the use of more devices. However, while some companies are competing to be the first to deliver 5G to the consumer, the environmental influences of the new network are being overlooked.

There is some evidence that the new devices and technologies associated with 5G will be harmful to ecosystems. The main component of the 5G network that will affect the earth's ecosystems is the millimeter waves. The millimeter waves that are being used in developing the 5G network have never been used at such scale(规模)before. Studies have found that there are some harms caused by these new technologies.

The millimeter waves, specifically, had a detrimental effect on birds. In a study, researchers observed that after exposure to radiation from a cell tower for just 5~30 minutes, the eggs of sparrows were disfigured. The disfiguration of birds exposed for such a short amount of time to these frequencies(频率)is significant considering that the new 5G network will have a much higher density(浓度)of base stations(small cells) throughout areas needing connection. The potential dangers of having so many small cells all over areas where birds live could threaten their population's survival.

Additionally, it was found that cellular devices were linked to many disturbances in the ecosystems of bees. In this study, beehives exposed for just ten minutes to 900MHz waves fell victim to colony collapse disorder(蜂群崩坏症候群). Bees are an incredibly important part of the earth's ecosystem. Around one-third of the food produced today is dependent on bees for pollination(授粉), making bees are a vital part of the agricultural system.

The impact that the cell towers have on birds and bees is important to understand, because all ecosystems of the earth are interconnected. If one component of an ecosystem is disrupted the whole system will be affected.

1. What will probably cause the environmental problems with the wide use of 5G network?

A．The lack of the density of base stations.

B．The less mature devices and technologies.

C．The lower capacity for the use of devices.

D．The large amount of use of millimeter waves.

2. Which of the following best explains the underlined word "detrimental" in Paragraph 3?

A．Important.

B．Unknown.

C．Harmful.

D．Potential.

3. Why are bees important in the earth's ecosystem?

A．They play a key role in food production.

B．They can guide some pollinators to work.

C．They are likely to reduce unpleasant noises.

D．They rid disturbances in the agricultural system.

4. What is the best title for the text?

A．Should 5G Be Used in the Future?	B．The Influence of 5G on Ecosystem
C．The Research on 5G Technologies	D．How Can Ecosystem Survive 5G?

8 . 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

After new measurements, China and Nepal have announced a new official height for Mount Everest. The result     1     (announce) on Tuesday that Everest’s peak stands 8,848.86 meters tall,     2     (high) than previously thought. It was reported during an online video event     3     (lead) by the foreign ministers of China and Nepal.

The two countries agreed to the official height after new     4     (survey) of the mountain in 2019 and 2020. Everest’s height was first declared as 8,842 meters by a British team around 1856. But the most     5     (wide) accepted height has been 8,848 meters decided by the Survey of India in 1954.

Nepal had never previously measured the height of Mount Everest     6     its own. In 2005, a Chinese team reported height of 8,844.43 meters, not including the mountain’s snow top. A Nepal government team of climbers and surveyors climbed Everest in May 2019, using GPS and satellite     7     (equip) to measure the peak. Later that year, the leaders of the two countries decided they should agree on     8     official height. A survey team from China then carried out measurements in the spring of 2020, during     9     time all other climbing activities had stopped because of the coronavirus crisis.

Nepal’s climbing community welcomed the result. “The height of Mount Everest will not be a conflict     10     a mutually agreed number. This is a milestone in mountaineering history,” said Santa Bir Lama, president of the Nepal Mountaineering Association.

9 . How To Eat Better for the Planet

You're environmentally conscious - and hungry. Here are answers to all your coo-friendly food questions.

Does what I eat have an effect on climate change?

Yes. The world's food system is responsible for about one quarter of the planet-warming greenhouse gases that humans generate each year. That includes raising and harvesting all the plants, animals, and animal products we eat.     1    

How exactly does food contribute to global warming?

When some forests are cleared to make room for farms, cattle, sheep or other livestock, some serious problems may come up.     2     Also, fossil fuels are used to operate farm machinery, make fertilizer, and ship food around the globe, all of which generate emissions.

What about chicken?

A number of studies have found that chickens, ducks, and other birds have a lesser climate impact than cattle or sheep kept on a farm.     3     Especially at converting feeding materials into animal meat, the efficiency is highly improved, though this has prompted major concerns about animal welfare.

Is organic produce better for the climate?

Organic produce is grown without synthetic fertilizers or pesticides, but that doesn't mean it's necessarily better than conventionally grown produce from a climate perspective.     4     In some cases it can be worse.

    5    

It's true that one person alone just makes a little bit in the climate problem. On the other hand, if many people made changes to their diets, that could start to add up. Experts have argued that it would make a big difference if the world's heaviest meat eaters scaled back - even moderately.

A．Does what we eat matter?

B．Can I really make a difference?

C．Organic farms often require more land.

D．Modern-day chickens are bred to be extremely efficient.

E．Processing, packaging, and shipping food are also part of it.

F．Advances in chickens breeding are helping to reduce the cost of it.

G．Large stores of carbon released into the atmosphere heat up the planet.

10 . 假定你是李华，你的加拿大网友Jack想了解你所在社区的垃圾分类（garbage classification）开展情况。请你给他写一封回信，要点如下：
1.活动开始时间
2.活动开展情况
3.活动后社区变化
注意：
1.写作词数应为80词；
2.可以适当增加细节，以使行文连贯。
Dear Jack,
_____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

Yours,

Li Hua