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A few weeks ago, scientists at Ukraine's...

    A few weeks ago, scientists at Ukraine's Vernadsky Research Base in Antarctica found their usually white surrounds were covered in a shocking blood-red. For such a mess, the culprits behind this horrible scene are tiny.

“Our scientists have identified them under a microscope as Chlamydomonasnivalis(雪地衣藻),” said the National Antarctic Scientific Centre of Ukraine in a Facebook post.

These green algae, a type of seaweed, are common in all icy and snowy regions of Earth, from the Arctic to high mountain regions. They lie still during the freezing winter, but once the sunlight warms enough to soften their world, the algae awake, making use of the melt water and sunlight to rapidly bloom.

“The algae need liquid water in order to bloom,” University of Leeds microbiologist Steffi Lutz told Gizmodo in 2016. “The algal blooms contribute to climate change,” the center stated.

A study in 2016 showed that snow algal blooms can decrease the amount of light reflected from the snow by up to 13 percent across one melt season in the Arctic. “This will surely result in higher melt rates,” the researchers wrote.

In 2017 environmental scientists calculated that microbial communities contributed to over a sixth of the snowmelt where they were present in Alaskan ice fields. Their experiments showed that areas with more melt water led to the growth of 50 percent more algae and places with more algae melted further.

This Antarctic summer has certainly seen a lot more melt water than usual. Temperature records keep changing, leading to rapid melting previously only seen in the Northern Hemisphere.

1.What does the underlined word “culprits” in Paragraph 1 mean?

A.Risks. B.Chances.

C.Effects. D.Criminals.

2.What can we know about Chlamydomonasnivalis?

A.They can be found anywhere. B.They are sensitive to temperature.

C.They grow slower than before. D.They survive only one melt season.

3.What can be inferred from the last two paragraphs?

A.Ice and snow will soon disappear in the Antarctic.

B.Microbial communities bring about extreme weathers.

C.The Southern Hemisphere is warmer than the other parts.

D.Climate change and algae growth interact with each other.

4.Which can be a suitable title for the text?

A.Why Snow Turned Blood-red. B.How Algae Began in the Arctic.

C.Why Climate Changes Greatly. D.How the Snow Reflects Sunlight.

 

1.D 2.B 3.D 4.A 【解析】 这是一篇说明文。文章说明了几周前,乌克兰南极洲弗纳德斯基研究基地的科学家们发现,他们平时洁白的四周被一片触目惊心的血红色所覆盖,而造成这一现象的背后原因是雪地衣藻。文章介绍了雪地衣藻的习性,以及其与气候变化之间相互影响的关系。 1. 词义猜测题。结合后文behind this horrible scene are tiny可知此处指造成周围一片触目惊心的血红色这一恐怖场景背后的罪犯是小小的雪地衣藻。由此可知,划线单词“culprits”意思为“罪犯”。A. Risks.风险;B. Chances.机会;C. Effects.影响;D. Criminals.罪犯。故选D。 2. 细节理解题。根据第三段中They lie still during the freezing winter, but once the sunlight warms enough to soften their world, the algae awake, making use of the melt water and sunlight to rapidly bloom.可知它们在寒冷的冬天里静静地躺着,但一旦阳光温暖到足以软化它们的世界,藻类就会醒来,利用融化的水和阳光迅速开花。由此可知,雪地衣藻对温度很敏感。故选B。 3. 推理判断题。根据第四段“The algae need liquid water in order to bloom,” University of Leeds microbiologist Steffi Lutz told Gizmodo in 2016. “The algal blooms contribute to climate change,” the center stated.可知“藻类需要液态水才能开花,”利兹大学微生物学家Steffi Lutz在2016年告诉Gizmodo。该中心表示“藻类大量繁殖导致了气候变化”。由此可推知,气候变化与藻类生长相互作用。故选D。 4. 主旨大意题。根据第一段中A few weeks ago, scientists at Ukraine's Vernadsky Research Base in Antarctica found their usually white surrounds were covered in a shocking blood-red.可知几周前,乌克兰南极洲弗纳德斯基研究基地的科学家们发现,他们平时洁白的四周被一片触目惊心的血红色所覆盖。结合文章说明了造成这一现象的背后原因是雪地衣藻,介绍了雪地衣藻的习性,以及其与气候变化之间相互影响的关系。由此可知,A选项“雪为什么会变成血红色”最符合文章标题。故选A。
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    Nowadays, to work remotely, all you need are a computer and an Internet connection. According to a new study, employees who can work from anywhere else are generally happier than those who work onsite(现场的)in an office.

Video conferencing company Owl Labs surveyed 1,202 full-time US workers from the ages of 22 to 65, and discovered that 62 percent of the respondents worked remotely at least some of the time and 38 percent worked onsite. Of the remote workers, 49 percent worked remotely full-time.

As it turns out, working remotely—or the idea of it—makes people happy, 83 percent of the survey respondents agree that the ability to work remotely would make them happier, and 71 percent of workers who do get to work remotely said their job makes them happy, compared with 55 percent of office-only workers.

In the study, full-time remote workers said they're happy in their job, 22 percent more than people who never work remotely. The reasons why respondents said they decided to work remotely were better work-life balance(91 percent), increased productivity/better focus(79 percent), less stress(78 percent), and to avoid a commute(通勤)(78 percent).

One reason why remote workers might be happier is that they were more than twice as likely to earn more than $100,000 per year. And the higher they were on the corporate(公司的)ladder, the more likely survey respondents were to have the privilege of working remotely: The job levels with the greatest percentages of remote workers were founder/CEO-level(55 percent)and vice president(46 percent).

Loyalty is another factor: Remote workers are 13 percent more likely than non-remote workers to stay with their current job for the next five years—making remote work a win-win for employees and employers alike.

Not only are remote employees happier, but they are prepared to work longer hours, according to the report. Remote workers said they work over 40 hours per week, 43 percent more than on-site workers do.

1.What can he learned about the respondents in the survey by Owl Labs?

A.49 percent work remotely full-time.

B.55 percent are not satisfied with their work.

C.83 percent prefer to work in an office.

D.About 40 percent are office-only workers.

2.Compared with remote workers, onsite workers are         .

A.less loyal B.more productive

C.less creative D.more hardworking

3.It is more likely for those with higher job levels to          .

A.live freely B.have double income

C.work remotely D.work less time

4.What is the text mainly about?

A.The choice of working sites. B.The benefits of working remotely.

C.The tendency of future jobs. D.The qualities of offsite employees.

 

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    Last summer, I had to stay in the room during the period of my recovery from cancer after the operation. It was unexpected that life highlighted everything that I might tend to take for granted in the normal course.

On the first morning, my children presented me a coffee pot. I liked to begin the day with a cup of coffee and was eager to try the pot.

When I made coffee, it spilled out over the whole table. Fortunately, nobody was there to see my embarrassed look! I kept trying, but each morning would see me wiping up the coffee. Then I realized that if I poured very slowly there would be no spilling.

This was at first a very painful experience. My normal practice was to rush through breakfast so that I could get on with my day. But at that moment I learned not only to pour slowly but to enjoy the experience: the smell, the taste, and the stillness of a new day.

It helped me to reflect upon whether there were other areas of my life 1 was rushing through. Most of life, it seemed. Strangely, those we consider loved ones may go of radar(雷达)when we would expect them to enquire about our well-being. However, others we seldom keep in touch with came into our lives suddenly, full of concern, well-meaning advice and love.

After the recovery period, I started to leave extra time to do even the most ordinary tasks. When shop owners would apologize for keeping me waiting, I would say, "Not a problem, I'm not in a hurry." Even hanging out washing became pleasurable when a couple of extra minutes of standing still, and listening to the birds singing in the trees around me became part of my routine.

Besides, one of my favorite experiences living in the inner city for many years was sitting on the front doorstep of our home spending time with strangers. We sat on the steps, each of us with a cup of coffee in our hands, listening to each other's stories. It was one of the warmest things about living in a busy city.

1.What was the author's life like before the time of recovery from the illness?

A.Awkward. B.Relaxing.

C.Hurried. D.Thrilling.

2.How did the author enjoy the pouring-coffee experience?

A.By pilling coffee over the table. B.By buying a new pot.

C.By chatting with the strangers. D.By pouring coffee slowly.

3.What happened when the author changed her lifestyle?

A.She had more time for reflecting on her past.

B.She found joy in ordinary daily activities.

C.She became impatient with any shop owner.

D.She liked listening to mysteries in busy cities.

4.What is the main purpose of this article?

A.To tell people how to make coffee tasty.

B.To advocate enjoying slow-paced life.

C.To show the gift from her children.

D.To recommend making friends with others.

 

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8.6 Excellent

Based on 6537 reviews.

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1.Which one is the advantage of Belmont Hotel Manila?

A.The international airport is easy to reach. B.Many restaurants can be found there.

C.It is the most expensive hotel in Manila. D.The customers can enjoy Starbucks free.

2.What can we learn about Hyatt Regency Manila City of Dreams?

A.It is strongly recommended by the author. B.It offers customers a kitchen to cook food.

C.Customers can enjoy a rooftop view there. D.It gets 8.8 very good based on reviews.

3.Which of the following hotels is suitable if you want to save money?

A.Belmont Hotel Manila. B.BSA Twin Tower Ortigas.

C.Hyatt Regency Manila City of Dreams. D.Starbucks.

 

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