You can’t see it with your own eyes，but your smart-phone is likely to be covered with bacteria- perhaps even more so than your toilet seat. That's a lot of dangerous microbes（微生物）floating around, and yes, it is terribly dirty.
In this age of global travel and trade, it’s more important than ever to cut down on possible routes of infection and to stop bacteria and viruses spreading from person to person. Part of that means making sure your phone isn’t sending anything more than data.
And besides the potential health risks of a dirty phone, there's also the simple annoyance of looking at a screen that’s covered in fingerprints and other oily spots that are part of life with a smart-phone.
In short, you’ve got plenty of reasons to regularly give your phone a thorough clean. Not just during a pandemic（大流行病），either-we should be thinking about keeping our phones bacteria free all the time, says microbiologist Paul Turner, a professor at Yale University.
After all, we touch our phones all the time and many of us are relatively careless about cleaning them. “It sets the stage for kind of concern,” Turner says. “People could be handling phones and picking up any bacteria or virus that can attach to a surface and survive for a period of time.”
Take SARS-CoV-2, the corona- virus（冠状病毒）that causes the COVID-19, for example. Scientists are still trying to get solid evidence, but early research suggests that it can survive on plastic or stainless steel（不锈钢）surfaces for two or three days. That means you could be washing your hands perfectly well, but immediately picking the virus up again as soon as you reach for your phone.
You could be doing everything right（like washing your hands and staying away from people），but
if there’s a contaminated surface in your home or your pocket, you could expose yourself to the virus anyway, Turner says.
1.Why does the author mention the toilet seat?
A.To draw a vivid picture of a dirty phone.
B.To show how dirty a toilet seat is.
C.To add some background information.
D.To introduce a topic for discussion.
2.What can we learn in Paragraph 6?
A.Simply washing our hands is not enough.
B.Scientists have got solid evidence of the COVID-19.
C.The corona-virus can survive on smooth surfaces for 2 or 3 weeks.
D.The author suggests washing our hands before using our phones.
3.What do the underlined words “contaminated surface” refer to in the last paragraph?
A.A stainless steel. B.A deadly virus.
C.A clean phone. D.An infectious phone.
4.What is the main idea of the text?
A.You may get infected with your dirty phone.
B.You are supposed to wash your hands.
C.You’d better clean your dirty phone.
D.You’d better throw away your dirty phone.
Seasonal pumped hydropower storage（SPHS），an already established yet infrequently used technology ,could be an affordable and sustainable solution（解决方法）to store energy and water annually, according to new IIASA research published in the journal Nature Communications. Compared with other mature storage solutions, such as natural gas, the study shows that there is considerable potential for SPHS to provide highly competitive energy storage costs.
Seasonal pumped hydropower storage means pumping water into a deep storage reservoir（水库）, built parallel to a major river, during times of high water flow or low energy demand. When water is not enough or energy demand increases，stored water is then released from the reservoir to generate electricity.
The new study is the first to provide a global, high-resolution analysis of the potential and costs for SPHS technology. In their analysis, researchers assessed the theoretical global potential for storing energy and water seasonally with SPHS, focusing on the locations with the highest potential and lowest cost. They found that the technology would be particularly effective in the Himalayas, the Andes, Alps，and the Rocky Mountains, as well as mountainous regions in the Middle East, Brazil, Asia, and Russia, and many other locations around the world.
The study also addresses some of the potential environmental concerns related to hydropower. Because SPHS reservoirs are deep and constructed parallel to, rather than within the course of a river, the environmental and land use impacts can also be up to 10 to 50 times smaller than conventional hydropower plants.
Hunt, lead author of the study, says, “With the need for a change to a more sustainable world with lower CO2 emissions（排放），renewable energies and energy storage will play a major role in the near future. Given the vast untapped（未开发的）and cheap potential of SPHS, it will soon play an important role in storing energy and water on a yearly basis.”
1.What is the strength of SPHS based on the new IIASA research?
A.It’s costly. B.It’s out-dated.
C.It’s rarely used. D.It’s inexpensive.
2.What do researchers concentrate on when assessing the use of SPHS?
A.Environmental protection. B.High profits.
C.Suitable places. D.Water flow.
3.What do we know about the SPHS reservoirs in Paragraph 4?
A.They damage the river.
B.They are environmentally friendly.
C.They are similar to traditional hydropower plants.
D.They can be effective in many places globally.
4.What’s the future for SPHS according to Hunt?
A.Promising. B.Panicking.
C.Discouraging. D.Demanding.
Sir David Attenborough is set to host a brand new natural history series, named A Perfect Planet. The noted documentarian is back, and will be starring in a five-part BBC One series which will take a look at “the intricate（复杂）systems” that allow Earth to boom.
The show is set to explain how the planet operates, looking at everything from ocean currents to solar energy to the weather, and risking all around the world, from India to the Arctic.
Plus, in showing how the earth works, the documentary will also seek to display how animals adapt to their natural environments as they continue to change. As ever, it sounds like a truly fantastic watch.
It won’t be a surprise to hear that the new Attenborough series is set to feature some wonderful film scenes, too.
Speaking of the brand new series, from Our Planet producers Silverback Films, Sir David said: “Oceans，sunlight, weather and volcanoes - together these powerful yet fragile forces allow life to flourish（茂盛）in astonishing diversity. They make Earth truly unique-a perfect planet. Our planet is one in a billion, a world filled with life. But now, a new determining force is changing the face of Earth: humans. To preserve our perfect planet we must ensure we become a force for good.”
While an exact first-show date has not yet been announced, the show is set to land on BBC One later this year.
1.What do we know about Sir David Attenborough?
A.He will direct the series. B.He will host a space series.
C.He enjoys a good popularity. D.He will explore all around the world.
2.A Perfect Planet covers the following EXCEPT______.
A.fantastic shots
B.performances of film stars
C.animals’ adaptation to environmental change
D.how the natural forces in the world work overall
3.In Sir David’s opinion, who/what is mainly responsible for changing the face of the planet?
A.Man. B.The animal.
C.Climate change. D.The power of nature.
4.In which part of a website will you find the text?
A.Health and Lifestyle. B.Sports and Games.
C.TV and Films. D.Fashion and Beauty.
There are many reasons to choose a career. Talent ranks highly, as does interest- and of course, you need to get paid enough money to live on. For some, their career path is also guided by a sense of altruism （利他主义）. They are looking for a job where they can make a difference in their communities and the world. There are some jobs here for every altruistic soul.
Occupational Therapist（疗法专家）
People with this job help patients young and old improve the sill they need for everyday living.
Patients might be children on the autism（自闭症），mature adults recovering from physical illness or injury, and everyone in between. This job requires a master’s degree and professional license.
Median Annual Salary：$65，185
Job Outlook（2016-26）：24 percent growth
Dietitian
Dietitians advise clients on healthy eating with a variety of goals，from supporting medical treatment, weight loss to managing illnesses like diabetes（糖尿病）.Dietitians typically have a bachelor's degree, and their pay may rise with specific skill sets.
Median Annual Salary：$51，982
Job Outlook（2016-26）：15 percent growth
Registered Nurse
Nurses provide patient care in a variety of in-patient and out-patient settings, including hospitals, doctor’s offices, clinics, and patients' homes. They also help care and educate patients and their families about health and disease management. Many hospitals now require bachelor's degrees for their nurses. All registered nurses must be licensed.
Median Annual Salary：$62，962
Job Outlook（2016-26）：15 percent growth
Doctor
Physicians and surgeons obviously make a real difference in patients' lives and contribute to the health of the community at large. They also get paid well：depending on their specialty, they can earn well over $200,000 a year. On the other hand, they may need that money to pay off their school fees: doctors undergo nine years or more of post- secondary education and training.
Median Annual Salary：$140,506
Job Outlook（2016-26）：13 percent growth
1.If you want to become an occupational therapist, you should________.
A.have a bachelor’s degree B.have a master's degree
C.be experienced in curing the autism D.be only aware of the medical condition
2.Which kind of job has the lowest outlook?
A.An occupational therapist. B.A dietitian.
C.A registered nurse. D.A doctor.
3.What do the four jobs have in common?
A.They need social skills. B.They are related to medicine.
C.They require nine years for degrees. D.They are suitable for selfish self-seekers.
假设你是红星中学高三学生李华，请根据以下四幅图的先后顺序，用英文写一篇短文，向“英语园地”投稿。记述你和同学们在新冠肺炎疫情期间，参加学校组织的“向奋战在战‘疫’一线的医护人员献爱心”（Show our gratitude and love to the medical staff）活动的全过程。
注意：词数不少于60.
提示词：新冠肺炎 COVID-19
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假设你是红星中学高三学生李华，你的英国朋友Jim要来中国留学，听说手机支付(mobile payment)在中国非常普通，在邮件中向你咨询生活中使用手机支付的情况。请你用英语给他写一封电子邮件，内容包括：
1. 在哪些情况下可以使用手机支付；
2. 使用手机支付的感受。
要求：1. 词数不少于50；
2. 开头和结尾已给出，不计入总词数。
Dear Jim,
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Yours,
Li Hua
