Đề + ĐA thi thử ĐH lần 3 năm 2013 - Trường THPT Đông Hà - Quảng Trị môn vật lý

TRƯỜNG THPT ĐÔNG HÀ
Tổ: VẬT LÍ
***
ĐỀ THI THỬ ĐẠI HỌC - CAO ĐẲNG LẦN 3 NĂM HỌC 2012-2013
Môn: Vật Lý 12
(Thời gian làm bài 90 phút)
Họ và tên thí sinh:……………………………………… Số báo danh: ………………… Mã đề thi: L-6789
Cho biết: hằng số Plăng h = 6,625.10
–34
J.s; độ lớn điện tích nguyên tố e = 1,6.10
–19
C; tốc độ ánh sáng trong
chân không c = 3.10
8
m/s; 1u = 931,5 MeV/c
2
.
I. PHẦN CHUNG CHO TẤT CẢ THÍ SINH (40 câu, từ câu 1 đến câu 40)
Câu 1:đúng
A.  !"#"$%&#'(
B. )*+,-#.#/$0*+ 1(
C. )*+,-#.2#$%+3&4-#+5#"6#$0(
D. 78%&#$9:&/"6#$0(
Câu 2:;<&0/"6#<
=
>?<&'@+A,, %&#"6B%
&#C
=
(#D<1<'@0E#/"6#<"?B"6<4B
%&#C()/"6#<"6,-#F
A.

G
=
=
H (
T
m m
T
 
 
= −
 
 ÷
 
 
 
B.
G
=
=
H (
T
m m
T
 
 
 
= −
 ÷
 
 

 
 C.
G
=
=
H (
T
m m
T
 
 
 
= −
 ÷
 
 
 
D.
G
=
=
(
T
m m
T
 
=
 ÷
 
Câu 3:75đúng%&#%

A.)"6,,0%&#%I%&#3B+1#(
B.7B$%&#%9:&?/1#(
C. J0/$%&#%?K3D#(
D. L&#%1&M#9:&,,(
Câu 4:)#NM#,"4B!/
A.2#10/#<(
B.M#K"4#+#"4+#M#,(
C.M#K"4#+#"44+#M#,(
D.#<"4#+#"4+#M#,(
Câu 5:O4P# $I<=.QRS<.<&T<I<#, %"# ?H.UJ/4
<& # <(V??W@P"4#?1+##N=.GXS<?=.R=S<T<I<
+1+#D#$%B<MY# "6#@+
A. Z # <@'31<+( C. Z # <:9+AP@'3+(
B. Z # <:9(  D. Z # <#M#K(
Câu 6: ;W2#"6#$#1[Z+M\+P#%N#W]

^_HQ.`a
G
b3Jcb^H.G.Q.
dc(),,#1[Z+MNeP%N#<1eP-#92#"6#G.RR3J.T
,eP2#X!("4#T<#1[Z+M9+F
A.H.X`(H=
_`
< B.f.gX(H=
_U
< C.X.Ug(H=
_g
< D.H.GG(H=
_g
<

Câu 7:;&0+3'@()0-#'@#>1<<&P∆l. Ch/#iA
PA+#+B0%&#F
<@
<
j

j
=
đ
đ
(1&%&#$0F
A.
G
k b Hcl
= ∆ −
B.
 H
k
b Hcl
−
=
∆ +
C.
b Hc
k
 H
l
∆ −
=
+

( D.
b Hc
k
 H
l
∆ +
=
−
Câu 8: J0E#/"6#< %&#'49"#+B@
H
^k
H
blm
Q
π
c<B
2#n
H
. %&#'49"#+B@
G
^k
G
blc<B2#n
G
^Xn
H
()
0 %&#K#69$%&#+1B2#n(Z WY#F
A. n^Rn
G

B. n^Qn
H
C. n^gn
H
D. n^G.Rn
H
Câu 9: ;&0-#E#H=##%&#'(oE%"4<&<
<bP+<&N+"D#cB*+,-#M#K"#B%&#pK=.Hq4
M#<<(rT#^H=<a
G
(O+*Y$<<10%&#
C+#Ha`<>rs`gUf
A.G(H=
sQ
V( B.G(H=
sX
V( C.=.GV( D.=.=GV(
Câu 10:C+#,# <ts#.#Au9W@Pv.<<E9w#W3<&
#M#KL.##i3u
H
u
G
Kb"#u
H
u
G
Muc(xp<;
+1<.Y!#0X.?!"6#<E2##u
H
u

G
<&"6#∆BP
#00Q(V?2##u
H
u
G
1<G∆BP;
A./Wf( B. #0f( C. #0g( D. #0U(
Câu 11: ;&2#,?% k7<#M#.#?#k^f=
=
"6E+#M#
,(7?y<#z90969RF.#.:.%<.,<?#E9<E1k739"#M#
#(??T$T<2#,/4#<:
G
(Vi#+<E7
A. .#.%<( B. ,<( C. .#( D. .:.#(
Câu 12:;&#A#<-<3{#9+A#DW@P"4
#=.`µ<"4#λ"?()#3H<<.#N3?<G<(
C+#<&#+&#r^GX<<+1<.?<"6QQP#.+#RP?+y#
$ (C,"4#λ.?+#RP+y#-<#y#$#r(
A.=.XRµ<( B. =.RRµ<( C. =.`Rµ<( D. =.gRµ<(
Câu 13:C+#,# <{###.3^H<<.3<H
#L^G<(7?3A#DW@P"4#λ
H
^=.Xµ<λ
G
^=.R`µ<(Z+1
P;V4@
;
^H=<<@

V
^Q=<<1*+,P/$W@P+y#
A.G( B.R( C.Q( D. X(
Câu 14:C3?"6#[#.9%"4sai?
A.|#"6P\P#59MM(
B. V2#"6#$9MM#".M#9:&!/$#(
C. C+#M#.9MM%53#4/&^Q(H=
U
<a(
D. [.#1[9@PT9:#.}##~Y#9@PT9:9MM(
Câu 15:7y<z933+# /&H=
`
b<ac%53"D#W+#<& 
+"D#"D#&f.HbJa<c"4#$0/#"6"4#4 +"D#(C,>#"D#
"6D#H===(
A.H.`b<c( B.H.Ub<c( C.=.Gb<c( D.G.Rb<c(
Câu 16:O4P# $<P9:&
A. 2#"6#$9?4<P( B. &#2#!$33+0+<P(
C. T$<P( D. "4#$#?<P
Câu 17: ;&'@-<###A<0E#/"6#<.<# ,'@&W#^
H=Va<()0-<-#. .+1<E-<##•B@T <& +"D#]^
G.R(H=
X
Ja<+#M##"4#%53+:$'@(o +"D#h@T 
+#D#
g at m k
π
∆ =
(u%&#41&U<%53+:$'@(O+*$


A.H`€j( B.GR€j( C.QG€j( D.G=€j(
Câu 18: )#>.!/$P<0G$<&6%%`R<9+-#!/<•
bH===Z‚c(C/&+#+1%-#
A. `R=<a( B. QGR<a( C. HQ==<a( D. HQ=<a(
Câu 19: 79W#PF
CZ3ƒ
GQ=
f=
X
G
GQX
fG
+→
(O5.!"62#"6#1?+1#$
Pƒ+.P
α
PCM+(V2#"6#++#9W#-#
A. XmGQ=sGQX( B. GQ=_X_GQX( C. GQXsX_GQ=( D. XmGQ=mGQX(
Câu 20: o@*B+>$<&T9#@P
s
„
.#"D%y#<&<?<@# (;…
<&P
s
„
+<B /?<$<2#1<<&*(p9"6?ND
<!^=?D<
H
 ^HG
<?<#"6

H

@# ?D<
G H
 ^Q
<?<
#"6
G

@# (?+-#
H G
g ^X
(7B+>$T9#@P
A(HG( B.GX( C.`( D.Q(
Câu 21:
GX
HH
V
A#*9#@P
„
−
4B+>C?K
GX
HG
;#
(rY!b^=c<&
<†
GX
HH
V

#1T(‡D<
H

.h/#i/P
GX
HG
;#
P/P
GX
HH
V
'P
+#<†
H
Q
(‡D<
G H
 ^ mGC
.h/+1-#
C+#Ga`<>rs`gUf
A.
HQ
Q
( B.
G
Q
( C.
HH
HG
( D.

g
HG
(
Câu 22:V#"D%y#P9+P#W#1#+9W#PP
#/#+y#&#2#3"4#094<&#HG=
=
(?//P
4Q()?0đúng
A.W#+1E2#"6#.y&&#2#$P9+!(
B.W#+19W#2#"6#(
C.W#+1M#2#"6#(
D. W#+19W#2#"6#(
Câu 23: oE<& 9@#+* %:#M#K.!/K"6!P
<Pˆ.r.7</?9(7#+*ˆ.r.7M#K(!h!/$ 9<P@+
 "6#&#"\#(
A.V?2#!/B 9 %:#!r 9 %:#!7
B. V?2##<!/B 9 %:#!ˆ#<
C. V?#<!/B 9 %:#!<…9![ˆ.r72#
D.V?2#!/B 9 %:#!ˆ2#
Câu 24: 7<P @/?9#A<?+\ˆ.&%!<&<=.RaπbZc:
  %#=.Haπb<jc(o 9E!P<P
( )
 ƒ G H==  J= π
()Kˆ.
T#+*$?+\ˆ
H
ˆ
G
BM#T1:$<P(75?0
đúng(

A.ˆ
H
ˆ
G
^R=== B.ˆ
H
mˆ
G
^Gƒ
G
a C.≤ƒ
G
aH== D.‰ƒ
G
aH==
Câu 25:;&6%2##i</*gR<(Z#!/#!1?9y#
P+#%N#+1%HRZ‚G=Z‚(?/&+$#+1%-#()!
/+#+1%G=Z‚B"4#
A. GR,R<( B. `R.=<( C. HG.R<( D. Qg.R<(
Câu 26: ;&%"1:<&M#T HX.GUfn. 9 %:#*<WGG=J(o 
+\$%NT9 ?%"+()M#%y#<P9B 9T9 9-#
QRfJ. 9!%4<9Ša`4%'# ()%"%y#<P9‹"\#4V
H
aV
G
^
HR.?* P&#B"D#"!B 9 %:#T9 b? /
M#T\<PT9$<P9-#Hc
A.H`RXJ B.QQ=fJ C.Xf`QJ D. ``H`J
Câu 27: ;&P<P#A< +\!ˆ.&<!r: 7</?9(oE!

P<P+1 9^ƒ
=
l.4l#+*K'ƒ
=
M#K()l^l
=
B 9 
%:#+1ˆP()l^l
H
B 9 %:#+17P()lhKN#+*l
=
?#+*
l
H
B 9 %:#+1r
A.2#+A#<( B. M2#( C. #<+A2#( D. M#<(
Câu 28: V/$<&<9 @<&99!<#A<<&E9N!
P<Pk#A< +\ˆ^gGŒ.: 7^
π
(GRfG
H
bjc&<!r</?9( 
+\&%$<9()+M$<4/&
H
^XR'#a#E
G
^`='#a#
B"D#&%'#  %:#+#P<P"(7&%r /<
A.
π

G
Z( B.
π
G
H
Z( C.
π
H
Z D.
π
X
R
Z(
Câu 29: oE 9^HGR
G
ωbJc.ωK"6P<P/?9k;(oP<Pk;
#A< +\ˆ/?9: .P<P;W&% +\+(? 9+1Pk;M
M#94 9+1P;+^ˆ(J4#+*ω^H==π+%aω^R`.GRπ+%aB<Pk
y# /M#T#+*-#
A.=.f`( B.=.UR( C.=.fH( D.=.UG(
Câu 30: o/4+# NB
A.3"D#& +"D#
]
ur
y#9"#49"#+#'3<W#N

ur
M##
43"D#& +"D#
]

ur
(
B. 3"D#& +"D#
]
ur
3<W#N

ur
My#9"#49"#+#(
C. 3"D#& +"D#
]
ur
3<W#N

ur
MM##49"#+#(
D. 3<W#N

ur
y#9"#49"#+#'3"D#& +"D#
]
ur
M##
43<W#N

ur
(
C+#Qa`<>rs`gUf
Câu 31: V?< 9^H==ωJ!&!<rB1&%'# WD=.X
k(V?< 9+1!: 7B1&%'# WDG.Rk(;r7<P

%&#r7(V? 9P!:=.HJB%'#P<P
A.Rk( B. H<k( C. H=k( D. HRk(
Câu 32: C+1<ET##A%&#u
H
.u
G
9"#+B!"6F
H
^
G
^XX=Š<<.
/&+#HG=<a(O5{+#<$u
H
u
G
.<k.-<+1u
H
u
G
!"6{<&
#=.R<G<(CPD<0/$<kHG<aB0/%&#P<#+*

A.
HG Q
<a( B.
X Q−
<a( C._HG<a( D.
X Q
<a(
Câu 33:Z#A#?69k.Q=<+1<ET#%&#39"#w#

W#y#9(u/<%&#41&P+1Pw#/#Ag(C/&+#
X=<a(C!/%&#$#A#+*
A.XZ‚ B.RZ‚( C.`Z‚( D.gZ‚
Câu 34: )?0Y#9W#P2#"6#
A.CK#/"6##h$P+"49W#K#/"6##h$P
9W#(
B. CK#2#"6#1?$P+"49W#K#2#"6#1?$P
9W#(
C. CK#&:/$P+"49W#4K#&:/P9W#(
D. CK#&#2#$P+"49W#4K#&#2#$P9W#(
Câu 35: )?0sai9W# P
A.W# P9W#2#"6#
B.W# Ph@+\ &+T(
C. W# P@+\ &1#59W#2#"6#
D. Z .#"D"<"69W# P
Câu 36: ;&#%+#N+"D#
B
ur
M##4+:$#4/&^HU==
'#a9Y(CPD<^=.p99?
n
r
$<E9w##%694
B
ur
<&#Q=
=
(CN
M#P#\#%=.=Hn(W$T &#<W#@T +##
A.

=.` bQ= c
`
e t Wb
π
π π
= −
( B.
=.` b`= c
Q
= −
e t Wb
π
π π
(
C.
=.` b`= c
`
e t Wb
π
π π
= +
( D.
`=bQ= c
Q
e t Wb
π
= +
(
Câu 37: 7<P @ˆ.r.7</?93Wb&<!c(o %#7
K"6(oh7 9\!74T() 9 %:#\! +\ˆ


H== G
J() 9WD\!P<P
H== G
JB 9WD#i!P<P
W +\&<s
H== `
J(Z  ? %:#!P<Pk
A.R=J( B. `HRJ( C. G==J( D.Q==J(
Câu 38: ;&<P @k;/?9;(?k;#A< +\!ˆ
H
^G=Ω.&%!
<r
H
</?9(oP;W&9x}#9![ +\!ˆ
G
.: </?9(
oE 9@!<Pk!/R=Z‚#+* %:#G==JB"D#&%'#
 +#<P#+* %:#Gk(‡D<bc.
k
^G==
G
J"D#&%'# #
#<.'\D<bmHa`==c%'# 
k
^=(7M#T$P<P;
A.G``.Xn B.HG=nC(QG=nD. X==n
Câu 39:;&<P%&# N‹"\#r^X€Z:  %#7(CPD<^= 
,$: #+*P(u#D##T-#H=
s`

B ,$: -#[
#+*P$.TŠ
G
^H=(o %#7$: F
A.G(H=
sg
j B.G.GR(H=
sg
j C.G.R(H=
sg
j D.Q(H=
sg
j
Câu 40:V?/!P<P#A<&<!r</?94 +\!ˆ^HΩ
$#A <&T &#M#K +\+#+^HΩB+#<P%'#
 M#K"D#&H.Rk(Ly##A P9 <&:  %#7^Hµj()
 ,+1: P#+*P.#: #A+A/: 4&<!r<&
<P%P&#B+#<P%&# N%4!/#H=
`
+%a"D#&%'# P
-#{
=
(O+*{
=

A.H.Rk( B. Gk( C. =.Rk( D. Qk(
PHẦN RIÊNG (10 câu)
C+#Xa`<>rs`gUf
Thí sinh chỉ được làm một trong hai phần (phần A hoặc phần B)
A. Theo chương trình chuẩn (10 câu, từ câu 41 đến câu 50)

Câu 41:ZT<%&#'y#9"#.y#!/.9"#+B%&#!"6F
( ) ( )
H H H G G G
@ ^k lm• Ž@ ^k  lm• (
7?F
G G G
X@ m@ ^HQ< (
H G
)T<WT&@
H
^H<
B/&$-#`<a./&$T<W-#(
A. U<a( B. f<a( C. H=<a( D. HG<a(
Câu 42:759không đúng#<
A. J0/+#<9:&,A/"6#+1#$<M+"D#
B. u#<+4<+#M#,B9![M#,PI%&#39"#M#
#49"#+#
C. u#<#3"6!/-<+##NH`Z‚?G====Z‚
D. u#<+%&#+#<M+"D#,.#.+
Câu 43:;&!+#%&#4!/•P++1<E"4#A#"4k%&#y#
9"#+B+4/&^H.R<a(;<+1<E"4#+?k!
"6H`<G`<<%&#41&P+1;/<%&#P+1
;kU<(C!/•$!+#F
A. X=Z‚ B. R=Z‚ C. `=Z‚( D. H==Z‚(
Câu 44:u# N*9@P<PT\!# (
A.u#%( B. u#+#( C.u##D. u##
Câu 45:oE<&  ?@^ƒ
=
ω!P<Ph&%!<r(
O5ƒ  ? %:#\!P<PŽ.{

=
.{!"6#+*WD.#+*P#+*
 %:#$"D#&%'# +#<P(Z W1PM#Y#
A.
= =
ƒ {
=
ƒ {
− =
( B.
G G
G G
= =
 
=
ƒ {
− =
( C.
G G
G G
 
G
ƒ {
+ =
( D.
= =
ƒ {
G
ƒ {
+ =

(
Câu 46: ;P k#A<QP<P</?9Fk;bW:7cŽ;VbW?+\ˆcŽVbW
&<!rc(oE!<P
( ) ( )
G  H==u U c t V
π
=
()ˆ^Q=ŒB#ikV.; 9

a G
π
#+* %:#!"6gRJ.H==J()ˆ^ˆ
=
BM#T<PP(O+*ˆ
=

A.
Hg.R
Ω
B.
QXΩ
C.
`=Ω
D.
Q=Ω
Câu 47: C+#,# <##43ts#.<3<&PL
H
B#"D
0"6<& ()%D<?*+,L
G

#"DT +1</WmH+y#4
#0$ Y!(Ch/L
G
aL
H
F
A.
QG
G
+
k
k
B.
G
G H
k
k
−
C.
G Hk
k
−
D.
G
G H
k
k
+
Câu 48: 7?/%+W@P!/•
H

B/9"6/QW@P(7?/
%+W@P!/•
G
B/9"6/H=W@P(?2#"6##1[%+\
W]

^
=
G
E
n
−
b4]
=
-#/./#1c(Ch/!/$W@PF
A.
H
G
• Q
• H=
=
B.
H
G
• H=
• Q
=
C.
H
G

• GR
• Gg
=
D.
H
G
• HGU
• HQR
=
Câu 49:u9#@P9W# P#/#\i#<
A. o9W#P@+<&9M#*&#1#(
B. o9W#@+B9! &+T(
C. CK#/"6#$P9W#4K#/"6#$P+"49W#(
D. CK#&:/$P9W#4K#&:/$P+"49W#(
Câu 50: Ly#y<9+9P
Q
r
g
#W#1P+GPx#/#y#&#
2#)"#3"4#694<&#ϕM#+#<(?K#2#"6#
#h$P+"49W#K#2#"6##h$PPG)aQ(7
/"6#P-#*/"6##1[#!-#//$B
A.ϕ^sgaU( B.ϕ^mgaU( C.ϕ^Ra`( D.ϕ^sRa`(
B. Theo chương trình nâng cao (10 câu, từ câu 51 đến câu 60)
Câu 51: ;&<<3,{#0<%!(;<3&#"6#$#<Nr
H
?r
G
+##D#•(C+##D#•"6<&#
A.=.R•br

H
_r
G
ca{ B. =.R•br
H
mr
G
ca{ C. •br
H
_r
G
ca{ D. •br
H
mr
G
ca{
C+#Ra`<>rs`gUf
Câu 52: ;&@3<<3,R#(<
G
/4<&+:/*(@3#W#1B
*%:#$<&<<3Q=V(<(<5<(uG=N*%:#$<<3
.&#2#<@3"6
A. gG‘( B. g.G‘( C. `=‘( D. Q`‘(
Câu 53: ;&#"D#W#\<p9$<&B+'.-<##(u+#<E9w#-<
##<&+:/*.w#W#.<((rY!#"DW#1(
V?#"DTP<p93<&B
A.#"6&#$#"D(
B. †W#1B/"6#$4/"6#$#"D(
C. y#&#$#"D+A#"6P(
D. y#&#$#"D(

Câu 54: ;&+'#+5/"6#M##.#"D+3E#/"6#<
H
^G#<
G
^
Q#!<&6%<&+'#+5+:/*-<##(rT#/+5#+"D##^
H=<a
G
(O?6%M#%>M#+"6+1+'#+5(O/$E#F
A.^H<a
G
B. ^G<a
G
 C. ^Q<a
G
 D. ^X<a
G
Câu 55: ;&'@w#W##A<0E#/"6#H==#<&'@z&W#^
H==Va<()p0@/#%"439"#w#W#?*+,'@%>X<+A+<&0/
scmaX=
π
39"#w#W#"4#@/#(75%"#"4#@/#(70%&#
39"#w#W#(Tốc độ trung bình0&#N*+,T9T?*+,'@*pH.R
<lần thứ hai
A. fQ.gR<a( B. fg.QR<a( C. R`.GR<a( D. R.`GR<a(
Câu 56: )?<&W@P N"4#λ
H
^=.Q=µ<M$<&?# B@+
 "6##   ?><YGJ(V?E#iMM$?# 
+1<&  ?ƒ

k)
^sGJ?M<&W@P N"4#λ
G
^=.HRµ<B
&#2#P$13+# #+"44M-#
A.H.QGR(H=
sHU
‘( B.`.`GR(H=
sHf
‘( C.f.UGR(H=
sHf
‘( D.Q.XGR(H=
sHf
‘(
Câu 57: CB</&$P<3‚2#"6#9!$#T9H=!2#"6##h(7/&
#+#M#Q(H=
U
b<ac(
A.=(X(H=
U
<a B.=(U(H=
U
<a C.H.G(H=
U
<a D.G.fUR(H=
U
<a
Câu 58: PαPVHXW#1.@+9W#P<&P@<&P
9+(?+-#P+p0/".9W#2#"6#H.GHb;3Jc(7/
"6#$P<>F<

’
<
α
^=.GHb<
’
m<
9
c
G
<
9
<
α
^=.=HGb<
’
m<
9
c
G
(o&#2#Pα
A.H.RRR;3J( B. H.`R`;3J( C. H.fRU;3J( D. G.RRf;3J(
Câu 59: C+#+"D#69B<%<#0"6!/4!/$<%
#A<9+
A.V#A<&#+@<W#1(
B. ;&#+@#A<W#1(
C. ;&#P#!#A<W#1(
D. ;&#y#y#/&4#A<(
Câu 60: ?A#*9#@P
HX
`

7
B+>RgQ=2<(O[<&<†#…K&9#@PG==9
+>a9Y<&<†#…y#P.y#/"6#$<†#…K.TN<4E.&9#@P
H`==9+>a9Y(CK$<†#…K>
A. HgHf=2< B.GU`R2< C.HHX`=2< D.HfH=2<
- - - - - HẾT - - - - -

C+#`a`<>rs`gUf
TRƯỜNG THPT ĐÔNG HÀ
Tổ: VẬT LÍ
ĐÁP ÁN ĐỀ THI THỬ ĐẠI HỌC – CAO ĐẲNG LẦN 3 NĂM HỌC 2012 – 2013
Môn: Vật lí
I. PHẦN CHUNG CHO TẤT CẢ THÍ SINH (40 câu, từ câu 1 đến câu 40)
Câu 1 2 3 4 5 6 7 8 9 10
Đáp
án
A B A B D B C C B D
Câu HH HG HQ HX HR H` Hg HU Hf G=
Đáp
án
A D C B B C A A A A
Câu 21 22 23 24 25 26 27 28 29 30
Đáp
án
A B B D D B D D A C
Câu QH QG QQ QX QR Q` Qg QU Qf X=
Đáp
án
B B B B C B C B B D
II. PHẦN RIÊNG (10 câu)

A. Theo chương trình chuẩn (10 câu, từ câu 41 đến câu 50)
Câu 41 42 43 44 45 46 47 48 49 50
Đáp
án
A B C C B A D C D D
B. Theo chương trình nâng cao (10 câu, từ câu 51 đến câu 60)
Câu RH RG RQ RX RR R` Rg RU Rf `=
Đáp
án
B D A B A B D A C A
C+#ga`<>rs`gUf