书书书
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1.【01】B
【23】456,A={x2x>6}={xx>log26},瓓RA={xx≤log26},7(瓓RA)∩B=[0,log26],7
8 B.
2.【01】C
【23】456,z=2-3i
i +(1+i)i=(2-3i)i
i2 +i+i2=-4-i,7 z 槡= 17,78 C.
3.【01】B
【23】9: sin(3π
2 +α)=-cosα=槡6
3,7 cosα=-槡6
3;; α∈(0,π),7 sinα= 1-cos2槡 α=
槡3
3,78 B.
4.【01】A
【23】456,珋x=4500
60 =75,9:(55-75)2
60 ≈6.67>6,78 A.
5.【01】A
【23】f(x)=xsinx:? B;f(x)=3x-2sinx@A=#,BC(-!,0)DE+FG,
>? C;f(x)=x-x3 @A=#,BC(-!,0)DHE+;f(x)=e-x-ex
3 I@A=#,JC
(-!,0)DE+FK,78 A.
6.【01】D
【23】456,8π=ab·π,7 ab=8①;HLMNO l:x
a+y
b=1,P bx+ay-ab=0,7QRS
TUVNO lSWX: ab
a2+b槡 2
= 槡4 34
17 ,2Y a2+b2=34②,Z[①②,2Y a 槡=42,b 槡= 2,7
QR CS\]:x2
32+y2
2=1,78 D.
7.【01】C
【23】%^_,S=0+1=1,a=1,b=2,i=2,%`_,S=1+1+2=4,a=3,b=5,i=4,%)_,
S=4+3+5=12,a=8,b=13,i=6,%/_,S=12+8+13=33,a=21,b=34,i=8,%a_,S=
33+21+34=88,a=55,b=89,i=10,bcdef S,ghij,8 C.
8.【01】D
【23】kfHlmnopqSrstu Ωvwxyz{oq,ghij,z1 =x-3yC B
(4
3,-4
3)|}Y~,C C(4,4)|}Y~,P z1∈[-8,16
3];z2=2x+yC C(4,4)|}
Y~,C A(-4
3,4
3)|}Y~,P z2∈[-4
3,12],ghij,8 D.
2020年普通高等学校招生全国统一考试(全国I)仿真卷!"#$[% 2 &]
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9.【01】A
【23】456,m5=4,7 m=4
1
5 =2
2
5;; n8=9,7 n=9
1
8 =3
1
4,o m
n=2
2
5
3
1
4
=(2
2
5×20
3
1
4×20
)
1
20 =(28
35)
1
20
=(256
243)
1
20 >1,o m>n,9: p=log0.80.5>log0.80.64=2,m=2
2
5 <2,o p>m>n,78 A.
10.【01】B
【23】C△BMCT,BM=MC=3,∠BMC=120°,/s
CBDMS@)S
, O1,O2{@△BMC△ANDSRRU, O1O2ST O@SN)
AND-BMCSU, R=OC,7 2O1C= MB
sin∠MCB=6,7 O1C=3,7 OC
= OO2
1+O1C槡 2 槡= 10,7/s
CBDMSps: 40π,78 B.
11.【01】A
【23】: x=π
2, f(0)=f(π)=0,P sinφ=0,9:|φ|<π
2,o φ=0,456,T
4+
nT
2=π
2(n∈N),7 T= 2π
1+2n,72π
ω = 2π
1+2n, ω=1+2n(n∈N),of(x)=3sin[(1+2n)x]
(n∈N),9:=# f(x)C(0,π
8)D 1,, ij,¡¢£¤S ω
S: 5,7,9,11,¥ 4,78 A.
12.【01】C
【23】 M(x1,y1),N(x2,y2),O¦ MNST A(xA,yA),
x2
1
a2 -y2
1
b2 =1,
x2
2
a2 -y2
2
b2 =1
,
§KiY yA =-8b2
a2xA;
M S(x3,y3),R(x4,y4),O¦ SRST B(xB,yB),¨!iY yB =-8b2
a2xB,9: SR∥l,7 P,A,
B)¥O,yB -2
xB +1=yA-2
xA+1,7
-8b2
a2xB -2
xB +1 =
-8b2
a2xA-2
xA+1 ,P(xA -xB)(1-4b2
a2)=0,9: xA -
xB H: 0,7 b
a=1
2,7©ªO CS«¬O\]: y=±1
2x,78 C.
13.【01】-6
【23】456,m·(2m+3n)=2m2+3m·n=-8,;m2=5,7 m·n=-6.
14.【01】133
2!"#$[% 3 &]
【23】456, x3®S¯#: C2
7·(-1)5-3
2×C4
7·(-1)3+C3
7·(-1)4=-21+3
2×35
+35=133
2.
15.【01】2n2+3n
【23】456,(2n+3)an+1 -(2n+5)an =(2n+3)(2n+5),7 an+1
2n+5- an
2n+3=1,7#°
{ an
2n+3}@ 1:±®,1:²³Sl³#°,7 an
2n+3=n, an=2n2+3n.
16.【01】 槡93
4
【23】456,a+c=6,o ac≤(a+c
2 )2 =9,J sinA+sinC=2sinB,P a+c=2bb=3,
cosB=a2+c2-b2
2ac =(a+c)2-b2-2ac
2ac =27-2ac
2ac =27
2ac-1≥ 27
2×9-1=1
2,7 B∈(0,π
3],;
S△ABC =1
2acsinB≤ 1
2×9×槡3
2= 槡93
4 ,7△ABCsS~: 槡93
4 ,´µ´ a=b=c=3c
}l¶.
17.2:(1)´ n=1c,a1=S1=1+λ,(1{)
´ n≥2c,an=Sn-Sn-1=n2+λn-[(n-1)2+λ(n-1)]=2n-1+λ,(3{)
· ,n=1c¸¡¢Dm,o an=2n-1+λ.(4{)
9: a2a8=a2
4,7(3+λ)(15+λ)=(7+λ)2,2Y λ=1.(6{)
(2)(1)ij,an=2n,
1
(an+3)(an+5)= 1
(2n+3)(2n+5)=1
2( 1
2n+3- 1
2n+5),(8{)
7 Tn=1
2(1
5-1
7)+1
2(1
7-1
9)+1
2(1
9-1
11)+… +1
2( 1
2n+3- 1
2n+5)
=1
2(1
5-1
7+1
7-1
9+1
9-1
11+… + 1
2n+3- 1
2n+5)=1
2(1
5- 1
2n+5)= n
10n+25.(12{)
18.2:(1)HLM SA=1, SC 槡= 3,SB 槡= 2,BC=1,
9:∠BAC=30°,¹º»!,BC2=AC2+AB2-2AB·AC·cos∠BAC,2Y AB 槡= 3,(1{)
7 AB2+BC2=AC2, AB⊥BC;(2{)
; SB2+BC2=SC2, SB⊥BC,(3{)
9: AB∩SB=B,7 BC⊥rs SAB,(4{)
9: BCrs ABC,7rs SAB⊥rs ABC.(5{)
(2) A:¼½¾,¿ AkrÀ BCSNO: x,ABoCNO: y,¿ AkÁN
rs ABCSNO: z,Â[vwoqSÃÄNż½¯,
M SA=1,(1)ij C(1,槡3,0),B(0,槡3,0)
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M S¼½:(0,y1,z1)(z1>0),
SA·SB=AB·z1
y1= SA2-z槡{ 2
1
,
2Y y1=槡3
3,z1=槡6
3,P S¼½:(0,槡3
3,槡6
3),(6{)
Mrs SACSÆÇÈ: n=(x2,y2,z2),o
n· →AC=0,
n·→AS=0{ ,
o
x2 槡+ 3y2=0
槡3
3y2+槡6
3z2{ =0
,É y2=1,Y n=( 槡- 3,1,-槡2
2),(9{)
; →CD=1
3
→CS=(-1
3,- 槡23
9 ,槡6
9),7 D=(2
3,槡73
9 ,槡6
9),7 →BD=(2
3,- 槡23
9 ,槡6
9),(11{)
MNO BDÊrs SACoËÅ: θ, sinθ=
→BD·n
→BD n
=1.(12{)
19.2:(1)HLM M(x0,y0)C%^ÌÍ,Z[
x2
0+y2
0=32,
y2
0=2px0,
x0y0=16{ ,
(2{)
2Y x0=4,y0=4,2p=4,7ÎÏO CS\]: y2=4x.(4{)
(2)56Y F(1,0),M l:x=my+1(m≠0),ÐÑ y2=4xY y2-4my-4=0.
M P(x1,y1),Q(x2,y2), y1+y2=4m,y1y2=-4.(6{)
56i2Y R(-1,-2
m),kAR =
-2
m-2
-1-1=1
m+1.(7{)
; kAP +kAQ =y1-2
x1-1+y2-2
x2-1=y1-2
my1
+y2-2
my2
=2
m-2
m (1
y1
+1
y2
)=2
m-2(y1+y2)
my1y2
=2
m+2.(11{)
7 kAR =kAP +kAQ
2 .(12{)
20.2:(1)ÒÓpÔvÕoq:
Ö×ØÙÑ [0,50) [50,100) [100,150)[150,200)[200,250)[250,300]
Ú# 12 28 36 54 50 20
ÚÛ 0.06 0.14 0.18 0.27 0.25 0.1
(2{)
7ÖÜ×ØÙÑ: 25×0.06+75×0.14+125×0.18+175×0.27+225×0.25+275×0.1
=165.5(ÝÞ).(4{)
(2)①456,XSiß}: 200,300,400,500,600,
7 P(X=200)=0.2×0.2=0.04,
P(X=300)=2×0.2×0.7=0.28,
P(X=400)=2×0.2×0.1+0.7×0.7=0.53,
P(X=500)=2×0.7×0.1=0.14,!"#$[% 5 &]
P(X=600)=0.1×0.1=0.01,
7 XS{à°::
X 200 300 400 500 600
P 0.04 0.28 0.53 0.14 0.01
7 E(X)=200×0.04+300×0.28+400×0.53+500×0.14+600×0.01=380.(9{)
②%^、`áâSãäåæçvÕ:
Ö×ØÙÑ 100 200 300
èÛ 0.5 0.4 0.1
%)áâSãäåæçvÕ:
Ö×ØÙÑ 100 200 300
èÛ 0.2 0.7 0.1 (10{)
éêë 2020'ì)áâíYSäåîï: 100×(100×0.5+200×0.4+300×0.1)+50
×(100×0.2+200×0.7+300×0.1)=16000+9500=25500.(12{)
21.2:(1)456,f(x)=x2ex-x
e,É f(x)=0,
2Y x=0ð xex=1
e,(1{)
É m(x)=xex, m′(x)=(x+1)ex,
7´ x∈(-∞,-1)c,m′(x)<0,´ x∈(-1,+∞)c,m′(x)>0,(3{)
7´ x=-1c,m(x)~ m(-1)=-1
e,µ´ x<0c,m(x)<0,(4{)
7 xex=1
eñ 1ò#ó,7´ a=1c,=# f(x)Sô#: 2.(5{)
(2)456,F(x)=ef(x)-2lnx=x2eax+1-ax-2lnx,
M t=x2eax+1, lnt=2lnx+ax+1,
7=# F(x)=x2eax+1-ax-2lnxiõ: g(t)=t-lnt+1,(6{)
g′(t)=1-1
t=t-1
t,iY g(t)SE+FKtÄ:(0,1),E+FGtÄ:(1,+∞),
o g(t)S~: g(1)=1-ln1+1=2,
7=# g(t)Su:[2,+∞),(9{)
ö5÷õ:´ t=1c,lnt=2lnx+ax+12,
P ln1=2lnx+ax+1=0,Y a=-1+2lnx
x ,
M h(x)=-1+2lnx
x , h′(x)=2lnx-1
x2 ,
7 h(x)SE+FKtÄ:(0,槡e),E+FGtÄ:(槡e,+∞),(11{)
o h(x)S~: h(槡e)=-2
槡e
,7ò# aS}øù:[-2
槡e
,+∞).(12{)
22.2:(1)
x=-3+m,
y=m
k{ , úûü# miY y=1
k(3+x),(2{)!"#$[% 6 &]
x=3-n,
y=kn{ , úûü# niY y=k(3-x),(3{)
M C1Ê C2Sý: P(x,y),
y=k(3-x),
y=1
k(3+x{ ),úû kY x2+y2=9(y≠0).(5{)
(2)ªO CS¼½\]: ρ=3(θ≠0,θ≠π),(6{)
;ªO C3:x=3sinθ,
y=3+3cosθ{ ,P x2+(y-3)2=9,
7ªO C3S¼½\]: ρ=6sinθ,(8{)
56iY ρ=3,
ρ=6sinθ{ ,Y sinθ=1
2,7 θ=π
6ð θ=5π
6,
7ªO CªO C3SýS¼½:(3,π
6)(3,5π
6).(10{)
23.2:(1)456,f(x)= x+1
3 , f(x)>6 x+1
3 >6x+1
3>6ð x+1
3<-6,(3{)
2Y x>17
3ð x<-19
3,7Hlm f(x)>6S2þ:{xx>17
3ð x<-19
3}.(5{)
(2)456,f(x)≥4- x-m2 x+ 1
n(m-n) + x-m2 ≥4,
9: x+ 1
n(m-n) + x-m2 ≥ x+ 1
n(m-n)-(x-m2) =m2+ 1
n(m-n),(6{)
m=n+(m-n)≥2 n(m-n槡 ),7 1
n(m-n)≥ 4
m2,(8{)
7 m2+ 1
n(m-n)≥m2+4
m2≥4,´µ´ m 槡= 2,n=槡2
2cl¶Ë[.(10{)