a = 1 b = 2 hoi c = ?
K
Khách
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26 tháng 7 2016
1, Xét \(\Delta\)ABH vuông tại H(gt)
=>^ABH+^BAH=90
=>^BAH=90-^ABH=90-50=40
Vì AD là tia pg cua ^A(gt)
=>^BAD=^DAC
Mà ^A=90(gt)
=>^BAD=DAC=45
Có ^A=^BAH+^HAD+^DAC=90
=>^HAD=90-(^BAH+^DAC)=90-(40+45)=5
TM
24 tháng 12 2018
The ancient (1)________ of Hoi An lies on Thu River, more than 30 kilometers to south of Da Nang. occupied by early western traders, Hoi An was one of the major (2)________ commercial ports of South Asia in the 16th century. Hoi An is famous (3)_________ old temples, pagodas, title-roof houses and narrow streets. Tourists can visit the relics of Sa Huynh and Chan Civilizations. They can also enjoy the beautiful scenery of the Thu Bon River, Cua Dai Beach, etc. In (4)_________ years, Hoi An has become a very (5)________ tourists destination in VietNam. Importantly, the commitee of the World Heritages of UNESCO officially certified Hoi An a World Heritage Site in 1999.
1. A. village B. city C . town D. capital
2. A. recent-time B. modem-time C. new-time D. old-time
3. A. for B. in C. with D. of
4. A. near B. new C. recent D. most
5. A. popular B. díliked C. known D. liked
QH
1
30 tháng 12 2017
1,Read the passage and then decide whether the sentences are True (T) or False (F). Viet Nam's New Year is known as Tet. It begins between January twenty-first and February nineteenth. The exact date changes from year to year. Tet lasts ten days. The first three days are the most important. Vietnamese people believe that what people do during those days will influence the whole year. As a result, they make every effort to avoid arguments and smile as much as possible. Vietnamese people believe that the first person through the door on New Year's Day can bring either good or bad luck. Children receive lucky money as they do in other countries. 1. Tet occurs in late January or early February. _______ 2. There are two weeks for Lunar New Year. _______ 3. People should not argue with each other at Tet. _______ 4. The first visitor on New Year's Day brings good or bad luck. _______ 5. Only children in Viet Nam get lucky money. _______
2,
Choose the correct answer A, B, C or D for each of the gaps to complete the following text. Tra Co Beach in Quang Ninh province is 9 lilometres from Mong Cai. It has the (1)_____ and the most romantic beach in Viet Nam. Tourists can enjoy the (2)_____ of white sand beaches and green sea water all year (3)_____. Visitors can (4)_____ enjoy the sunset or sunrise in Con Mang islet. You can visit Tra Co Communal House, Linh Khanh Pagoda, and Tra Co Church. If tourists want some fresh (5)_____, they can find it from fishing boats. They can take part in "Tra Co Festival" from May 30 to June 6. 1. A. long B. longer C. longest D. much longer 2. A. beauty B. beautiful C. of beauty D. pretty 3. A. over B. long C. round D. longer 4. A. be B. be able C. then D. also 5. A. seafood B. menu C. air D. water
3,
1 A: wanted B: washed C: danced D: played
2 A: beds B: dogs C: porters D: books
3 A: pictures B: watches C: buses D: brushes
4 A: homework B: mother C: open D: judo
4,
I.Choose A,B,C or D for each gap in the following sentences:
1 David is more ___________than Peter
a)intelligenter
b)intelligent than
c)intelligent
2 My sister plays the piano _____________than my brother
a)gooder
b)more good
c)better
3 His story is ________than theirs
a)funnier
b)more funnier
c)funnyer
4 It's very cold there.You_______take a warm coat
a)can
b)mustn't
c)must
d)can't
5 HCM city is the ________city in VN
a)more large
b)largest
c)noisiest
d) more noisy
6 Housed in Yen Binh are_________than houses in Lang Son.
a)modern
b)moderner
c)more modern
d)the most modern
7 My head hurts.I need to take a ______
a)walking boots
b)sun cream
c)backpack
d)painkiller
8 We can play in the_________
a)square
b)temple
c)park
d)school bag
9 Mekong River is _______river in VN
a)long
b)longer
c)the longer
d)the longest
10 Go straight_________and take the second street on your left
a)along
b)ahead
c)to
d)in
7 tháng 11 2017
Chọn A,B hoặc C điề vào chỗ trống
hoi an is one of the (1)...... towns in Viet Nam.It (2)....... on the lower section of the Thu Bon river. It is a very beautiful town with a lot of colorful(3)..... which are hung(4).... the town. Hoi An is famous for one-(5)......tailoring.Customers order clothes (6)....... the morning and get them i the (7)....... . The price is not really (8)....... if you want to find the place of the (9)..... time, Hoi An is a (10)..... choice.
1/ A newer B newest C oldest
2/ A are B is C are being
3/ A lanterns B stars C ballons
4/ A on B around C up
5/ A month B week C day
6/ A at B in C on
7/ A night B afternoon C evening
8/ A expensive B cheap C more expensive
9/ A modern B old C new
10/ A best B worst C good
NH
3
K
12 tháng 2 2018
M = a+b -1
N = b+c -1 = c +b - 1
mà M > N
=> a > c
=> Hiệu a - c dương
3
minhnhe
bang 3 nhe