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短文改错：
How does the disease present?
Well, from what is known so far, there can be
（改为
a
）
the number
of symptoms range
(
改为
ranging)
from mild to severe. There can be
fever
and
respiratory
symptoms
such
as
cough
and
short
(
改
为
shortness)
of breath. In more severe case
(
改为
cases)
, 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
diagnosed(
诊断
)
by
a
test
calling
(
改为
called)
PCR or Polymerase Chain Reaction(
聚合酶链反应
). This test identifies
the virus basing
(
改为
based)
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
) cases in
China.
Investigations
found
that
it
was
caused
by
a
previously
unknown virus-now named the 2019 Novel Coronavirus. In this text,
1
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
2
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
”
?
Because
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.
2.
Was 2019-nCoV transmitted from bats(
蝙蝠
)?
3
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