2019届高考英语大一轮复习U
it3U
derthesea课时规范训练新
人教版选修7
Ⅰ阅读理解
A
2017四川成都诊断Fromsleepi
gsta
di
guptoshutti
gdow
halfoftheir
brai
，a
imalshavesomestra
gesleepi
ghabits
Nowsomeoftheseu
usualhabitsfrom
appi
ggiraffestobirdsthatsleepwhile
flyi
ghavebee
show
i
achartThischartshowsthatlittlebrow
batsare
verylethargic_sleepi
gforarou
d195hoursperday
Thislo
gperiodofsleepisthoughttobeawayofco
servi
ge
ergya
dit
mea
sbrow
batso
lyhu
tforafewhourseach
ightwhe
theiri
sectfoodis
available
I
co
trastgiraffesca
goweekswithoutsleepbecausetheselargea
d
slowmovi
ga
imalsareco
sta
tlyeasytotheattacksfrompredators
Howeverothera
imalsareexpertsatmultitaski
ga
dca
swimorflywhile
sleepi
gForexampledolphi
sa
dwhalessleepwhilekeepi
ghalfoftheirbrai

alert警觉sotheydo
tdrow
withdolphi
stypically
appi
gforarou
d10
hoursadayThemethodisk
ow
as“loggi
g”a
dithasbee
observedi
bottle
ose
dolphi
swhichkeephalfoftheirbrai
atalowlevelofalert
essThisallows
thedolphi
tokeepe
oughco
scious
esstocarryo
breathi
gthroughitsblowhole
Whileseaottersare
talertwhiletheysleeptheyformraftssotheyare
ot
separatedfromeachotherThecreaturessometimesholdha
dsorpawswhe
theysleep
a
dtypicallyeatsleepa
drestwhilefloati
gi
groupsofrafts
1．Theu
derli
edword“lethargic”i
Paragraph2isclosesti
mea
i
gto
________
A．sleepy
B．i
active
C．e
ergetic
D．movable
2．Whydolittlebrow
batshavealo
gperiodofsleep
A．Toavoidsu
shi
e
B．Tosavemoree
ergy
C．Torelaxthemselves
D．Towaitfortheiri
sectfood
3．Howdodolphi
savoiddrow
i
gwhilesleepi
g
fA．Bytaki
gextra
apsB．Byholdi
gha
dsorpawsC．Bykeepi
ghalfoftheirbrai
alertD．Bybreathi
gthroughtheirblowholes4．Whatdoseaottersdoi
order
ottobeseparatedfromeachotherA．Theydo
tsleepB．Theyfloato
raftsC．Theyfloati
groupsD．Theyholdha
dsallthetime【语篇导读】文章介绍了小棕蝠、长颈鹿、海豚、鲸和海獭等动物特殊的睡眠习惯。1．解析：选A。词义猜测题。根据画线词后的sleepi
gforarou
d195hoursperday可知，小棕蝠每天大部分时间都在睡觉，由此可推断lethargic在此表示“昏昏欲睡的”，与sleepy意义相近。i
active意为“不活动的；怠惰的”；e
ergetic意为“精力充沛的”；movable意为“活动的”。2．解析：选B。细节理解题。根据第三段前半句Thislo
gperiodofsleepisthoughttobeawayofco
servi
ge
ergy可知，小棕蝠睡得多是因为要保存体力。故选B项。3．解析：选C。细节理解题。根据文章第五段第二句中dolphi
sa
dwhr