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QA
4 tháng 7 2021
Trả lời:
II. Choose the word that doesn't belong to the group.
1. A.watching TV B.playing sport C.swimming D.cartoon
2. A.listen B.catch C.paint D.photos
3. A.cycling B.skating C.gardening D.baseball
4. A.eat B.love C.hate D.
4 tháng 7 2021
2.Choose the word that doesn't belong to the group.
1.A.watching TV B.playing sport C.swimming D.cartoon
2.A.listen B.catch C.paint D.photos
3.A.cyclinh B.skating C.gardening D.baseball
4.A.eat B.love C.hate D.
25 tháng 9 2018
Will you ..... making models in the future ?
a. pick up b. look for c. take up d.find
A hobby helps you to connect with ... people
a.other b.others c.another d.the other
I think you should take up swimming ........... it is suitable for your health condition
a.so b.because c.although d.but
My family enjoys ..... because we can sell vegetables and flowers....money
a.garden-to b.gardening-for c.gardening-with d.garden-of
IM
17 tháng 9 2016
1. A. reporter B. collector C. gardener D. newspaper
2.A. stamps B. album C. collector D. mountain
3. A. skating B. climbing C.gardening D. horse-riding
4.A. hate B. enjoy C. love D. like
5.A. unusual B. favourite C. popular D. common
17 tháng 9 2016
find which word does not belong to each group.
1. A. reporter B. collector C. gardener D. newspaper
2.A. stamps B. album C. collector D. mountain
3. A. skating B. climbing C.gardening D. horse-riding
4.A. hate B. enjoy C. love D. like
5.A. unusual B. favourite C. popular D. common
10 tháng 2 2020
1. D. vehicles
2. B. traffic rule
3. A. helmet
4. C. pavement
5. D. rush hour
6. A. speed limit
7. B. obey
8. D. bumpy
9. A. drive a car
10. A. park
10. A. park
NN
10 tháng 2 2020
1. There used to be fewer people and.....on the road
A.roofs B.helmets C.helicopters D.vehicles
2. Do you know the in the UK is to keep to the left?
A.traffic light B.traffic rule C.traffic jam D.speed limit
3. It is dangerous to ride a motorbike without a.......
A.helmet B.triangle C.tricycle D.circle
4. In Hanoi, during rush hour , some road users ride their motorbike on the.........
A.driving liecence B.lane C.pavement D.seat belt
5. Traffic is terrible during the.......when everyone is in a hurry to get to work or com back home
A.traffic light B.road sign C.traffic rule D.rush hour
6.The......for motorcycles is 40 km/h in towns and 60km/h outside urban areas.
A.speed limit B.driving licence C.traffic rule D.traffic light
7.You must......the traffic rules in order to avoid accidents.
A.park B.obey C.reverse D.warn
8.It takes us more than 3 hours to drive across those....roads.
A.wide B. safely C.right-handed D.bumpy
9. You need a driving licence to..........
A.drive a car B.ride a bike C.get on the bus D.get off the rain
10. The large supermarkets in VN often let you ...........free.
A.park B.obey C.warn D.find
NN
26 tháng 1 2019
2.Do you know the ..............in the UK is to keep to the left?
A.traffic light B.traffic rule C.traffic jam D.speed limit
3.It is dangerous to ride a motorbike without a ...........
A.helmet B.triangle C.tricycle D.circle
4.In Hanoi,during rush hour,some road users ride their motorbikes on the .....................
A.driving licence B.lane C.pavement D.seat belt
5.Traffic is terrible during the...............when everyone is in a hurry to get to work or come back home
A.traffic lights B.road sign C.traffic rule D. rush hour
6.The .......................for motorcycles is 40 km/h in towns and 60km/h outside urban areas
A.speed limit B.driving licence C.traffic rule D.traffic light
7. You must ............the traffic rules in order to avoid accidents .
A.park B.obey C.reverse D.warn
8.It takes us more than theree hours to drive across those ..................roads.
A.wide B. safety C.right-handed D.bumpy
9.You need a driving licence to ..............
A.drive a car B.ride a bike C.get on the bus D.grt off the train
10.The large supermarkets in Vietnam often let you .....................free
A.park B,obey C.warn D.find
11, some vehicles beep when they ........................to warn those behind
A ,ride B,reverse C, drive D,sail
12, After school, children queue up and wait for the bus ...................... on the pavement in front of the school .
A.safe B,bumpy C,safety D,safely
CL
12 tháng 10 2017
Gọi \(A=\dfrac{1}{2}+\dfrac{1}{4}+\dfrac{1}{8}+\dfrac{1}{16}+...+\dfrac{1}{x}=\dfrac{1023}{1024}\)
\(A=\dfrac{1}{2}+\dfrac{1}{2^2}+\dfrac{1}{2^3}+\dfrac{1}{2^4}+...+\dfrac{1}{x}=\dfrac{1023}{1024}\)
VẬy x là một lũy thừa của 2. Đặt x = 2y , ta có:
\(A=\dfrac{1}{2}+\dfrac{1}{2^2}+\dfrac{1}{2^3}+\dfrac{1}{2^4}+...+\dfrac{1}{2^y}\)
\(\Rightarrow2A=1+\dfrac{1}{2^2}+\dfrac{1}{2^3}+\dfrac{1}{2^4}+...+\dfrac{1}{2^{y-1}}\)
\(\Rightarrow2A-A=1+\dfrac{1}{2}-\dfrac{1}{2^2}+\dfrac{1}{2^3}-\dfrac{1}{2^4}+...+\dfrac{1}{2^{y-1}}-\left(\dfrac{1}{2}+\dfrac{1}{2^2}+\dfrac{1}{2^3}+\dfrac{1}{2^4}+...+\dfrac{1}{2^8}\right)\)
\(=A-\dfrac{1}{2^y}\)
Vậy \(1-\dfrac{1}{2^y}=\dfrac{1023}{1024}\Leftrightarrow\dfrac{1}{2^y}=\dfrac{1}{1024}\Leftrightarrow2^y=1024\Rightarrow x=1024\)
Vậy x = 1024
Đề hỏi gì vậy bạn?
find the odd once out A B C D