Unit
2
Cloning
Ⅰ.七选五
If
you
are
already
making
the
time
to
exercise，it
is
good
indeed！With
such
busy
lives，it
can
be
hard
to
try
and
find
the
time
to
work
out.
__1__
Working
out
in
the
morning
provides
additional
benefits
beyond
being
physically
fit.
●Your
productivity
is
improved.Exercising
makes
you
more
awake
and
ready
to
handle
whatever
is
ahead
of
you
for
the
day.
__2__
●Your
metabolism
(新陈代谢)
gets
a
head
start.
__3__
If
you
work
out
in
the
mornings，then
you
will
be
getting
the
calorie
(卡路里)
burning
benefits
for
the
whole
day，not
in
your
sleep.
●__4__
Studies
found
that
people
who
woke
up
early
for
exercise
slept
better
than
those
who
exercised
in
the
evening.Exercise
energizes
you，so
it
is
more
difficult
to
relax
and
have
a
peaceful
sleep
when
you
are
very
excited.
●__5__
If
you
work
out
bright
and
early
in
the
morning，you
will
be
more
likely
to
stick
to
healthy
food
choices
throughout
the
day.Who
would
want
to
ruin
their
good
workout
by
eating
junk
food？You
will
want
to
continue
to
focus
on
positive
choices.
There
are
a
lot
of
benefits
to
working
out，especially
in
the
mornings.Set
your
alarm
clock
an
hour
early
and
push
yourself
to
work
out！You
will
feel
energized
all
day
long.
A．You
will
stick
to
your
diet.
B．Your
quality
of
sleep
improves.
C．You
prefer
healthy
food
to
fast
food.
D．There
is
no
reason
you
should
exercise
in
the
morning.
E．You
can
keep
your
head
clear
for
4—10
hours
after
exercise.
F．After
you
exercise，you
continue
to
burn
calories
throughout
the
day.
G．If
you
are
planning
to
do
exercise
regularly，or
you're
doing
it
now，then
listen
up!
本文是一篇说明文。文章告诉我们挤出时间锻炼身体的好处，而晨练的好处更大，对身体和工作都有所裨益。
1．G 解析：本空前文说在繁忙的生活中，我们很难找到时间锻炼，后文说晨练的好处，故中间的衔接句可表达“假设有时间锻炼”之类的含义，因此G项符合语境。
2．E 解析：本段的主旨是“晨练能提高你的效率”，E项“锻炼之后的4到10小时内，你都能让自己头脑清醒”追加了锻炼的好处，符合此处的语境。
3．F 解析：这一段说的是晨练有助于人体的新陈代谢，能让你一整天都感受到晨练消耗卡路里带来的好处，F项“晨练之后你还会在一天时间里继续消耗卡路里”符合语境。F项中的关键词throughout
the
day与文中的the
whole
day呼应。故选F。
4．B 解析：本题考查段落主题句。本段提到slept
better，more
difficult
to
relax，a
peaceful
sleep，因此这一段说的是晨练比晚上锻炼更能改善睡眠，因此选B。
5．A 解析：由本段的关键词stick
to
healthy
food
choices,
eating
junk
food,
positive
choices等可知，这一段说的是晨练对饮食的影响，因此选A。
Ⅱ.翻译下列句子，注意黑体部分要用到本单元的单词、短语或句型，然后将其合并成一篇短文
1．约翰跟他的双胞胎妹妹性格不同。
John_differs_in_character_from_his_twin_sister.
2．他总是很乐观，而他妹妹却时不时地感到很沮丧。
He_is_always_very_optimistic_while_his_sister_feels_cast_down_from_time_to_time.
3．一天他想和他妹妹修一辆状况很差的二手车，但他妹妹却不许他干这活儿。
One_day_he_wanted_to_repair_a_second?hand_car_in_poor_condition_with_his_sister_but_she_forbade_him_to_undertake_such_a_task.
4．她希望他不要拿这样的事情来烦她。
She_hoped_that_he_shouldn't_bother_her_with_this_kind_of_thing.
5．但她抵制不了他想尝试一下的欲望。
But_she_couldn't_resist_his_desire_to_have_a_try.
6．他突然想到应该找朋友帮忙。
It_struck_him_that_he_should_turn_to_his_friends_for_help.
7．他的朋友支持他的想法。
His_friends_were_in_favour_of_his_idea.
8．他们的努力最后得到了回报。
Their_efforts_paid_off_at_last.
9．然后传来消息说车已经修好了。(完全倒装结构)
Then_came_the_news_that_the_car_was_repaired_successfully.
10．他把他的成功归功于朋友的帮助。
He_owed_his_success_to_his_friends'_help.
请将以上句子连成一篇语言流畅、逻辑严密的短文。
John_differs_in_character_from_his_twin_sister._He_is_always_very_optimistic_while_his_sister_feels_cast_down_from_time_to_time._One_day_he_wanted_to_repair_a_second?hand_car_in_poor_condition_with_his_sister_but_she_forbade_him_to_undertake_such_a_task,_hoping_that_he_shouldn't_bother_her_with_this_kind_of_thing._But_she_couldn't_resist_his_desire_to_have_a_try._It_struck_him_that_he_should_turn_to_his_friends_for_help，who_were_in_favour_of_his_idea._Their
efforts_paid_off_at_last._And_then_came_the_news_that_the_car_was_repaired_successfully._He_owed_his_success_to_his_friends'_help.Unit
2
Cloning
Ⅰ.阅读理解
Have
you
seen
Jurassic
Park?
In
this
film,
scientists
use
DNA
kept
for
tens
of
millions
of
years
to
clone
dinosaurs.
They
find
trouble，however，when
they
realize
that
the
cloned
creatures
are
smarter
and
more
dangerous
than
expected.
That's
nothing
more
than
a
fiction.
But
could
we
really
clone
endangered
animals?
To
date,
the
most
successful
attempt
to
do
so
was
the
cloning
of
a
gaur，a
rare
ox?like
animal
from
southeast
Asia.
Scientists
used
a
cow
to
bring
the
cloned
baby
gaur,
named
Noah.
Two
days
after
birth，however，Noah
died
from
a
common
bacterial
infection.Other
endangered
species
that
may
be
cloned
include
the
African
bongo
antelope(羚羊),
the
Sumatran
tiger,
the
cheetah(猎豹),
and
the
giant
panda.
Next，could
we
really
clone
extinct
animals?
In
theory？Yes.To
do
this,
you
need
a
well?kept
source
of
DNA
from
the
extinct
animals
such
as
wool
mammoth(毛象)，Tasmanian
tiger，or
even
dinosaur,
and
a
closely
related
species,
still
living，which
could
serve
as
a_surrogate_mother.
In
reality?
Probably
not.
On
the
one
hand,
it's
not
likely
that
extinct
animals'
DNA
could
survive
undamaged
for
such
a
long
time.
Cloning
such
extinct
animals
as
wool
mammoth,
Tasmanian
tiger，or
dinosaur
is
much
more
difficult
due
to
the
lack
of
properly
well?preserved
DNA.
On
the
other
hand,
for
example,
a
gaur
can
have
a
cow
as
a
surrogate
mother,
definitely
not
a
monkey.
But
what
about
an
extinct
animal
as
unique
as
the
panda?
What
species
could
possibly
serve
as
a
surrogate
mother?
Cloning
presents
many
exciting
possibilities.However,
even
if
extinct
animals
were
brought
back，they
could
not
survive
in
today's
world.
Not
only
do
most
extinct
animals
have
no
habitat
to
live
in,
but
the
other
plants
and
animals
they
depended
on
for
food
may
also
be
gone
as
well.
本文说明了在克隆灭绝动物的过程中遇到的种种困难与障碍。即使克隆成功了，其赖以生存的食物链也已经被破坏，被克隆出来的动物也无法继续走下去。
1．It
can
be
learned
from
the
text
that
________.
A．the
gaur
is
an
extinct
species
B．the
gaur
lives
in
Asia
and
is
endangered
C．scientists
have
cloned
the
African
bongo
antelope
D．both
the
cheetah
and
the
giant
panda
live
in
Asia
答案：B
解析：细节理解题。根据第二、三段可知，印度野牛生活在亚洲的东南部，濒临灭绝。
2．The
underlined
words
“a
surrogate
mother”
probably
refer
to
a
female
who
________.
A．gives
birth
to
a
baby
of
its
own
B．cannot
give
birth
to
a
baby
C．gives
birth
to
a
baby
for
another
female
D．provides
DNA
答案：C
解析：词义猜测题。根据第五段的描述可知，此处表示的是，把一种动物的DNA提取出来之后，在另外一种动物的体内进行胚胎繁殖，而这种动物就被称为a
surrogate
mother，由此判断，画线部分意思为“代孕妈妈”，故C项正确。
3．The
difficulty
in
cloning
an
extinct
species
is
the
lack
of
________.
A．both
the
well?preserved
DNA
and
a
surrogate
mother
B．both
the
habitat
to
live
in
and
the
well?preserved
DNA
C．both
the
well?preserved
DNA
and
plants
to
live
on
D．both
the
habitat
to
live
in
and
plants
to
live
on
答案：A
解析：细节理解题。根据文章倒数第二段中的“On
the
one
hand...On
the
other
hand...”两个方面的表述可知，克隆的困难在于一是要寻找灭绝动物的保存完好的DNA，二是要寻找到合适的代孕的物种，故A项正确。
4．In
the
author's
opinion,
it
is
possible
that
________.
A．all
the
extinct
species
may
be
cloned
B．extinct
species
may
be
cloned
and
easily
survive
C．a
gaur
can
have
a
monkey
as
a
surrogate
mother
D．some
extinct
species
may
be
cloned,
but
not
survive
答案：D
解析：细节理解题。根据最后一段的表述可知，也许克隆存在众多的可能性，但是即使克隆成功了，也许会由于其赖以生存的食物链已经被破坏而无法继续存活下去。由此判断D项正确。
Ⅱ.语法填空
The
polar
bear
is
found
in
the
Arctic
Circle
and
some
big
land
masses
as
far
south
as
Newfoundland.While
they
are
rare
north
of
88°，there
is
evidence
__1__
they
range
all
the
way
across
the
Arctic，and
as
far
south
as
James
Bay
in
Canada.
It
is
difficult
to
figure
out
a
global
population
of
polar
bears
as
much
of
the
range
has
been
__2__
(poor)
studied；however，biologists
calculate
that
there
are
about
20,000—25,000
polar
bears
worldwide.
Modern
methods
__3__
tracking
polar
bear
populations
have
been
employed
only
since
the
mid?1980s，and
are
expensive
__4__(perform)
consistently
over
a
large
area.In
recent
years
some
Inuit
people
in
Nunavut
__5__(report)
increases
in
bear
sightings
around
human
settlements，leading
to
a
__6__(believe)
that
populations
are
increasing.Scientists
have
responded
by
__7__(note)
that
hungry
bears
may
be
congregating
(聚集)
around
human
settlements，leading
to
the
illusion
(错觉)
that
populations
are
__8__(high)
than
they
actually
are.
Of
__9__
nineteen
recognized
polar
bear
subpopulations，three
are
declining，six
__10__(be)
stable，one
is
increasing,
and
nine
lack
enough
data.
1．that
解析：考查同位语从句的引导词。分析句子结构可知，所填词引导同位语从句，解释说明evidence的具体内容，从句中不缺少成分且意义完整，故用that引导。
2．poorly
解析：考查词性转换。修饰动词studied应用形容词poor的副词形式poorly。
3．of/for
解析：考查介词。a
method
of/for
doing
sth.“做某事的方法”。
4．to_perform
解析：考查非谓语动词。此处是“主语＋be＋adj.＋不定式”结构，不定式用主动形式表示被动含义。
5．have_reported
解析：考查动词的时态。根据句中的时间状语in
recent
years可判断用现在完成时。
6．belief
解析：考查词性转换。根据空格前的不定冠词a可知，此处应填believe的名词形式belief(看法，信念)。
7．noting
解析：考查非谓语动词。介词后接动词时，应用其动名词形式。respond
by
doing
sth.“通过做某事回应”。
8．higher
解析：考查形容词比较级。根据空格后的than可知，此处应用high的比较级形式higher。
9．the
解析：考查冠词。此处特指确认的19个北极熊亚种群，故用定冠词the。
10．are
解析：考查动词的时态和主谓一致。此处陈述客观事实，应用一般现在时；six指代six
polar
bear
subpopulations，谓语动词应用复数。Unit
2
Cloning
Ⅰ.完形填空
Many
years
ago，my
dad
was
facing
a
serious
heart
condition.He
was
unable
to
do
a(n)
__1__
job.Sometimes
he
fell
suddenly
ill
and
had
to
be
__2__
to
the
hospital.
He
wanted
to
do
something
to
keep
himself
busy,
so
he
__3__
to
volunteer
at
the
local
children's
hospital.My
dad
loved
kids.It
was
a
perfect
__4__
for
him.He
ended
up
working
with
the
__5__
children.He
would
talk,
play,
and
do
arts
with
them.
One
of
his
__6__
was
a
girl
with
a
__7__
that
paralyzed(使瘫痪)
her
from
the
neck
down.She
couldn't
do
anything,
and
she
was
very
__8__.My
dad
decided
to
try
to
__9__
her.He
started
visiting
her
in
her
room,
__10__
paints,
brushes
and
papers.
He
__11__
the
paper
up,
put
the
paintbrush
in
his
mouth
and
began
to
__12__.He
didn't
use
his
hands
at
all.All
the
while，he
would
tell
her,
“See,
you
can
do
anything
you
set
your
__13__
to.”
At
the
end
of
the
day,
she
began
to
paint
using
her
__14__，
and
she
and
my
dad
became
friends.Soon
after,
the
little
girl
was
sent
__15__
because
the
doctors
felt
there
was
nothing
else
they
could
do
for
her.My
dad
also
__16__
the
children's
hospital
for
a
little
while
because
he
became
ill.Some
time
later,
after
my
dad
had
__17__
and
returned
to
work,
the
little
girl
who
had
been
paralyzed
came
in,
but
this
time
she
was
__18__.She
ran
straight
over
to
my
dad
and
hugged
him
really
tight.She
gave
him
a
__19__
she
had
done
using
her
hands.At
the
bottom
it
__20__：“Thank
you
for
helping
me
walk.”
My
dad
said
sometimes
love
is
more
powerful
than
the
doctor.
本文讲述了一个感人的小故事。作者的父亲因为心脏病的原因不能正常工作，但是因为他非常喜欢孩子所以到一家儿童医院做志愿者。在医院他鼓励一位因疾病而瘫痪在床的小女孩勇敢乐观，教她用嘴画画，最终小女孩可以自己走路了。爱的力量有的时候比医生的力量更强大。
1．A.important B．steady
C．easy
D．complex
答案：B
解析：逻辑推理题。后句“有时他会突然生病要被送进医院”说明他状态不稳定，自然无法做一份稳定的工作。故B正确。
2.
A．admitted
B．connected
C．attended
D．allowed
答案：A
解析：词语搭配题。短语be
admitted
to...被……录取，加入。本句中该词指他时不时会突然住院，接受治疗。故A正确。
3．A.decided
B．promised
C．forced
D．agreed
答案：A
解析：词语辨析题。decide决定；promise承诺；force迫使；agree同意。他想做一些事情让自己忙碌起来，所以他决定到当地儿童医院做志愿者。不是“承诺、迫使、同意”，而是决定要做某事。
4.
A．experience
B．lesson
C．task
D．job
答案：D
解析：逻辑推理题。因为我的父亲很喜欢孩子，所以做志愿者对他来说是一份很完美的工作。故D正确。
5．A.happy
B．lonely
C．sick
D．normal
答案：C
解析：背景常识题。根据上文可知父亲在当地的儿童医院里工作，那么进入医院的当然是生病的儿童了。
6.
A．kids
B．students
C．doctors
D．colleagues
答案：A
解析：词汇复现题。根据上文“to
volunteer
at
the
local
children's
hospital”可知父亲进入儿童医院做志愿者，那么在医院里接受治疗的是儿童。
7．A.wound
B．pain
C．gift
D．disease
答案：D
解析：背景常识题。根据上文可知父亲进入儿童医院做志愿者，所以此处应是一个生病的女孩。故D正确。
8．A.excited
B．depressed
C．embarrassed
D．confused
答案：B
解析：词语辨析题。excited兴奋的；depressed压抑的；embarrassed尴尬的；confused困惑的。这种疾病让小女孩瘫痪在床，什么事情也不能做，这让她很压抑。A、C、D三项语义不搭配。故B正确。
9．A.comfort
B．encourage
C．help
D．remind
答案：C
解析：词语辨析题。comfort安慰；encourage鼓励；help帮助；remind提醒。看到小女孩如此痛苦，父亲决定要尽力帮助她。故C正确。
10.
A．buying
B．borrowing
C．asking
D．bringing
答案：D
解析：词语辨析题。buy购买；borrow借用；ask请求；bring带来。他开始到女孩的病房看望女孩并给女孩带来了颜料、画笔和纸。bringing作伴随状语，buy是短暂性动词，不符合语境。
11．A.turned
B．pulled
C．stuck
D．stood
答案：D
解析：词语辨析题。turn
up调高，出现；pull
up停车；stick
up伸出；stand
up竖起，站立。他把纸张竖起来，把画笔咬在嘴里，开始画画。故D正确。
12.
A．paint
B．bite
C．beat
D．write
答案：A
解析：背景常识题。带来的画笔、颜料、画纸，是为了画画而准备的。
13．A.goal
B．mind
C．spirit
D．action
答案：B
解析：词语辨析题。goal目标；mind思维，思想；spirit精神；action行动。父亲鼓励她：只要你把思想集中在上面，你什么都可以做成的。故B正确。
14.
A．hands
B．mouth
C．legs
D．toes
答案：B
解析：词汇复现题。根据上文“He__11__the
paper
up，put
the
paintbrush
in
his
mouth”可知父亲教她用嘴画东西，后来这个女孩就按照父亲教给她的去做了。
15．A.hospital
B．school
C．home
D．abroad
答案：C
解析：逻辑推理题。根据后半句“the
doctors
felt
there
was
nothing
else
they
could
do
for
her”(医生认为没有什么可以为她做的)可推断出这个女孩被送回家休养了。
16．A.visited
B．enjoyed
C．served
D．left
答案：D
解析：逻辑推理题。根据后半句“because
he
became
ill”可知父亲生病了，所以他和女孩一样都离开了儿童医院。
17．A.received
B．realized
C．refused
D．recovered
答案：D
解析：逻辑推理题。根据后半句“...returned
to
work”(回去上班)，可知父亲身体恢复健康以后，又回到医院做志愿者了。故D正确。
18．A.smiling
B．walking
C．waving
D．crying
答案：B
解析：词语辨析题。smile微笑；walk步行；wave挥手；cry哭泣。曾经瘫痪的小女孩现在已经康复了，也就是说小女孩现在已经可以步行了。
19．A.card
B．flower
C．picture
D．book
答案：C
解析：逻辑推理题。从上文可知小女孩已经康复了，不再瘫痪在床了，现在也不再需要用嘴来绘画了，可以用双手绘画。女孩给了他一张用手画好的画。
20.
A．read
B．showed
C．warned
D．explained
答案：A
解析：词语辨析题。read写着，阅读；show展示；warn警告；explain解释。动词read和say都可以表示通知、布告所写的内容。在画的最下面，女孩写着：谢谢你帮助我走路。故A正确。
Ⅱ.应用文写作
假设你是李明，你班同学最近参加了某报社组织的一场讨论。讨论的主题是：要不要克隆人类。请你根据下表所提供的信息，给报社编辑(editor)投稿，客观介绍讨论的情况。
注意：1.词数80左右；
2．信的开头和结尾已为你写好，不计入总词数。
Dear
editors，
Recently
we
have
had
a
discussion
on
whether
we
should
clone
humans
or
not.40
percent
of
the
students
think_cloning_humans_is_very_meaningful.It_can_make_the_world_more_interesting_and_give_people_more_pleasure.We_can_clone_some_very_famous_scientists_and_let_them_do_more_things_for_humans.30_percent_of_the_students_think_we_can't_clone_humans.Each_of_us_is_special，but_a_cloned_person_is_only_a_copy.What's_worse，cloned_people_may_be_used_by_some_bad_persons.On_the_other_hand,30_percent_of_the_students_think_it_is_difficult_right_now_to_say_whether_cloning_humans_is_right_or_not.Perhaps_we_will_just_have_to_wait_and_see.
Yours
sincerely，
Li
MingConservationists in Brazil are ready to try cloning eight animals that are under pressure, including jaguars and manned wolves.
Other conservation groups have welcomed the plan, but say the priority (优先)should always be to preserve species in the wild by reducing hunting and maintaining habitats(栖息地)．“While cloning is a tool of last resort (手段), it may prove valuable for some species，” says Ian Harrison，a conservationist in Virginia.“Experimenting with it now, using species that are not at immediate risk of extinction，is important.”
None of these animals are endangered, but Brazil's agricultural research agency, Embrapa, wants a headstart.The eight species live in the Cerrado, a tropical plain.They will be cloned and kept as a reserve in case wild populations collapse (崩溃). As well as jaguars and manned wolves, the researchers also hope to clone black lion tamarins，bush dogs
