四年级下册语文生字短文改错：
How does the dia prent?
有书真好Well, from what is known so far, there can be（改为a） the number of symptoms range(改为ranging) from mild to vere. There can be fever and respiratory symptoms such as cough and short(改为shortness) of breath. In more vere ca(改为cas), there’s been pneumonia(肺炎), kidney failure(肾衰竭), and death. The mortality rate(死亡率) was(改为is) not known yet.
How can we tell if(改为whether) someone is infected or not?
The infection can be diagnod(诊断) by a test calling(改为called) PCR or Polymera Chain Reaction(聚合酶链反应). This test identifies the virus basing(改为bad) on its genetic fingerprint(指纹). There is current(改为currently) no specific medication for the virus and treatment is supportive care. There’s no currently vaccine(疫苗) to protect(+against) the virus. Treatment and vaccines are in development.
阅读理解：
Reading
In December 2019, there was a cluster of pneumonia(肺炎) cas in China. Investigations found that it was caud 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.
Coronavirus(冠状病毒) are a large group of virus. 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 the virus get their name.
美国化妆品品牌大全There are different types of coronavirus that cau respiratory(呼吸的) and sometimes gastrointestinal(胃肠的) symptoms. Respiratory dia 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 coronavirus that can cau vere dia. The 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 afood and live animal market in the city of Wuhan. The dia has since spread from tho who were sick to others, including family members and health care staff(员工；全体职员). There are many cas at prent and the dia has spread within China and also to a number of other countries.
So, where did the virus come from?
幸运颜色It’s known that coronavirus(冠状病毒) circulate in a range of animals. Sometimes the
virus 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 incread 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 rervoir of the 2019 Novel Coronavirus is not known yet.
微波炉怎么做蛋挞
Questions：
1. Why was the novel virus named “coronavirus”?
Becau coronavirus(冠状病毒) are a large group of virus. 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 the virus get their name.
2. Was 2019-nCoV transmitted from bats(蝙蝠)?
干什么能挣钱No.The animal rervoir of the 2019 Novel Coronavirus is not known yet.
3. 含霜履雪How many types of coronavirus are introduced in the passage?
There are three different types of coronavirus introduced in the passage.
The include the Severe Acute Respiratory Syndrome (SARS) coronavirus first identified in China in 2003, 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, and the 2019 Novel Coronavirus.
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. The include covering your mouth and no when coughing or sneezing with a medical mask, tissue or flexed elbow; avoiding clo contact with tho who are unwell; the appropriate u of 4 (mask) and personal protective eq
uipment, 5 (especial) in a healthcare tting; washing hands regularly with soap and water, or alcohol-bad 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).骑电瓶车
