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短文改错：以下文章有十处错误。
How does the disease present?
Well, from what is known so far, there can be the number of symptoms range from mild to severe. There can be fever and respiratory symptoms such as cough and short of breath. In more severe case, there’s been pneumonia(肺炎), kidney failure(肾衰竭), and death. The mortality rate(死亡率) was not known yet.
How can we tell if someone is infected or not?
The infection can be diagnosed(诊断) by a test calling PCR or Polymerase Chain Reaction(聚合酶链反应). This test identifies the virus basing on its genetic fingerprint(指纹). There is current no specific medication for the virus and treatment is supportive care. There’s no currently vaccine(疫苗) to protect the virus. Treatment and vaccines are in development.
阅读理解：
Reading
In December 2019, there was a cluster of pneumonia(肺炎) cases in China. Investigations found that it was caused by a previously unknown virus-now named the 2019 Novel Coronavirus. In this text, we’ll take a quick look at what’s currently known about the virus. Keep in mind(记住) that this is a new virus and what’s known about the virus now might change in the future.
Coronaviruses(冠状病毒) are a large group of viruses. They consist of a core of genetic material（遗传物质）surrounded by an envelope with protein spikes(蛋白棘突). This gives it the appearance of a crown. Crown in Latin is called “corona” and that’s how these viruses get their name.
There are different types of coronaviruses that cause respiratory(呼吸的) and sometimes gastrointestinal(胃肠的) symptoms. Respiratory disease can range from the common cold to pneumonia(肺炎). And in most people, the symptoms tend to be mild. However, there are some types of coronaviruses that can cause severe disease. These include the Severe Acute Respiratory Syndrome (SARS即严重急性呼吸综合征，俗称“非典”) coronavirus first identified in China in 2003 and the Middle East Respiratory Syndrome (MERS中东呼吸综合征) coronavirus that was first identified in Saudi Arabia(沙特阿拉伯) in 2012.
The 2019 Novel Coronavirus was first identified in China. It initially occurred in a group of people with pneumonia(肺炎) who’d been associated with a seafood and live animal market in the city of Wuhan. The disease has since spread from those who were sick to others, including family members and health care staff(员工；全体职员). There are many cases at present and the disease has spread within China and also to a number of other countries.
So, where did the virus come from?
It’s known that coronaviruses(冠状病毒) circulate in a range of animals. Sometimes these viruses can make the jump from animals to humans. This is called a spillover and could be due to a range of factors such as mutations(变异) in the virus or increased contact between humans and animals. For example, MERS-CoV is known to be transmitted from camels and SARS-CoV, from civet cats(果子狸). The animal reservoir of the 2019 Novel Coronavirus is not known yet.
Questions：
1. Why was the novel virus named “coronavirus”?
2. Was 2019-nCoV transmitted from bats(蝙蝠)?
3. How many types of coronaviruses are introduced in the passage?
语篇填空：
How do we prevent transmission of the virus?
This new virus currently has a 1 (limit) geographic spread. 2 , there are a number of standard hygiene(卫生) practices 3 have been recommended to protect against infection and further spread. These include covering your mouth and nose when coughing or sneezing with a medical mask, tissue or flexed elbow; avoiding close contact with those who are unwell; the appropriate use of 4 (mask) and personal protective equipment, 5 (especial) in a healthcare setting; washing hands regularly with soap and water, or alcohol-based hand rub. Actions that can be taken to prevent infection from______6____animal source include: avoiding unnecessary unprotected contact with animals; washing hands after contact with animals or animal products; and ensuring that animal products are cooked thoroughly before they 7 (consume).
8 is important to stay home if you’re feeling unwell. But if you have a fever, cough, and difficulty 9 (breath) , seek medical care early and share your previous travel history 10 your healthcare provider.
写作：
倡议书——从小事做起共战疫情
假定你是学生会主席李华，当前新冠状病毒肆虐，请你围绕 “从小事做起共战疫情” 这一主题，给全校学生写一封英文倡议书。
要点如下：
1. 倡议的原因和目的
2. 倡议的具体内容
3. 发出倡议
注意：
1. 词数150左右；
2. 可以适当增加细节，以使行文连贯。
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