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30 tháng 6 2021

1. peoples -> people
2. do -> does
3. in -> on
4. yesterday -> now

30 tháng 6 2021

1 A => people

2 B => does

3 C => on

4 D => today 

Câu 1:  Which underlined word is stressed? What is your favorite place of  interest in the city?  A          B                           C                    DCâu 2:  Which pattern does “Go away!” belong to??A. OOo                   B. OoO                   C. OO                     D. OOOCâu 3:  This sports center is so small that it cannot _____ the demands of local residents.A. set up                 B. face up to           C. deal about           D. keep up withCâu 4:  When I arrived at...
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Câu 1:  Which underlined word is stressed?

What is your favorite place of  interest in the city?

  A          B                           C                    D

Câu 2:  Which pattern does “Go away!” belong to??

A. OOo                   B. OoO                   C. OO                     D. OOO

Câu 3:  This sports center is so small that it cannot _____ the demands of local residents.

A. set up                 B. face up to           C. deal about           D. keep up with

Câu 4:  When I arrived at school, the school yard was already packed _____ new students.

A. with                   B. at                        C. to                       D. of

Câu 5:  I have no idea _____ to do on the weekend.

A. how                   B. what                   C. who                    D. where

Câu 6:  The new sports _____ has six tennis courts.

A. medium              B. match                 C. complex             D. game

Câu 7:  It’s a great experience to be sitting comfortably in a _____ pulled by someone through the ancient streets.

A. rickshaw             B. bicycle                C. cart                     D. tricycle

Câu 8:  I used to _____ a diary when I was a young girl.

A. keeping              B. keep                   C. kept                    D. be kept

Câu 9:  I’m bored with studying in class now. I wish I _____ bushwalking with my friends. It would be fun.

A. were going         B. had gone            C. am going            D. go

Câu 10:  My class suggested _____ to Phong Nha Cave since it is a famous natural wonder of Viet Nam.

A. travel                  B. travelling            C. to travel              D. travelled

Câu 11:  How many letters _____ to them before you lost touch with them?

A. had you sent       B. have you sent     C. did you send       D. do you send

Câu 12:  All of us were relieved _____ the exams.

A. have passed        B. to passed            C. to have passed    D. pass

Câu 13:  Nothing is _____ than getting stuck in a traffic jam.

A. worse                 B. more badly         C. better                  D. bad

Câu 14:  - Lan:   “Thanks a lot for your sound advice.”

         - Minh: “____________________________”

A. Great!                 B. Cool!                  C. Well done!         D. No worries.

Câu 15:  - Jane:  “I’m going to Delhi next week. What’s the best way to get around?”

         -  Peter : “______________________________”

A. Stay calm. Everything will be alright.

B. I understand how you feel.

C. It’s probably best to use rickshaws. They’re quicker than taxis, and quite cheap.

D. Yes, I have, actually. It’s an amazing place.

2
29 tháng 12 2023

Câu 1:  Which underlined word is stressed?

What is your favorite place of  interest in the city?

  A          B                           C                    D

Câu 2:  Which pattern does “Go away!” belong to??

A. OOo                   B. OoO                   C. OO                     D. OOO

Câu 3:  This sports center is so small that it cannot _____ the demands of local residents.

A. set up                 B. face up to           C. deal about           D. keep up with

Câu 4:  When I arrived at school, the school yard was already packed _____ new students.

A. with                   B. at                        C. to                       D. of

Câu 5:  I have no idea _____ to do on the weekend.

A. how                   B. what                   C. who                    D. where

Câu 6:  The new sports _____ has six tennis courts.

A. medium              B. match                 C. complex             D. game

Câu 7:  It’s a great experience to be sitting comfortably in a _____ pulled by someone through the ancient streets.

A. rickshaw             B. bicycle                C. cart                     D. tricycle

Câu 8:  I used to _____ a diary when I was a young girl.

A. keeping              B. keep                   C. kept                    D. be kept

Câu 9:  I’m bored with studying in class now. I wish I _____ bushwalking with my friends. It would be fun.

A. were going         B. had gone            C. am going            D. go

Câu 10:  My class suggested _____ to Phong Nha Cave since it is a famous natural wonder of Viet Nam.

A. travel                  B. travelling            C. to travel              D. travelled

29 tháng 12 2023

Câu 11:  How many letters _____ to them before you lost touch with them?

A. had you sent       B. have you sent     C. did you send       D. do you send

Câu 12:  All of us were relieved _____ the exams.

A. have passed        B. to passed            C. to have passed    D. pass

Câu 13:  Nothing is _____ than getting stuck in a traffic jam.

A. worse                 B. more badly         C. better                  D. bad

Câu 14:  - Lan:   “Thanks a lot for your sound advice.”

         - Minh: “____________________________”

A. Great!                 B. Cool!                  C. Well done!         D. No worries.

Câu 15:  - Jane:  “I’m going to Delhi next week. What’s the best way to get around?”

         -  Peter : “______________________________”

A. Stay calm. Everything will be alright.

B. I understand how you feel.

C. It’s probably best to use rickshaws. They’re quicker than taxis, and quite cheap.

D. Yes, I have, actually. It’s an amazing place.

Câu 13: Tổng a – (–b + c – d) bằng:


A. a– b+ c – d B. a+ b+ c+ d C. a+ b+ c – d D. a+ b – c+ d

Câu 16: Hình vuông có:


A.4 trục đối xứng B.3 trục đối xứng C.2 trục đối xứng D.1 trục đối xứng

Câu 39: We would havegiven you a lift if we’d know you were coming this way.                     A   B           C                            DCâu 40: I had gone to see you if I’d known that you were ill.                  A                 B                     C                           DCâu 41:I  think you should ………. up late at night.A. stayed B. Staying C. stay D. to stayCâu 42: If I  ……….. again, I think that I would have succeeded.A. had tried B. tried C. try D. tryingCâu 43: If you feel...
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Câu 39: We would havegiven you a lift if we’d know you were coming this way.

                     A   B           C                            D

Câu 40: I had gone to see you if I’d known that you were ill.

                  A                 B                     C                           D

Câu 41:I  think you should ………. up late at night.

A. stayed B. Staying C. stay D. to stay

Câu 42: If I  ……….. again, I think that I would have succeeded.

A. had tried B. tried C. try D. trying

Câu 43: If you feel bored, you should …………. away for a few days.

A. went B. gone C. to go D. go

Câu 44: Water……….down hill if there weren’t gravity.

A. won’t run B. didn’t run C. wouldn’t have run D. wouldn’t run

Câu 45: If I  ................ you, I wouldn’t buy that coat.

A. would be B. was C. were D. Am

Câu 46: What would happen if I…………. that red button.

A. had pressed B. press C. was pressed D. pressed

Câu 47: He will get fat if he ……… smoking.

A. stops B. had stopped C. did stop D. stopped

48. Sally……….the phone if she were in the room now.

A. will answer B. shall answer C. would answer D. answered

49. I wonder where Mai is. She should ________ here by now.

A. be B. is C. to be D. being

1
17 tháng 3 2022

Câu 39: We would havegiven you a lift if we’d know you were coming this way.

                     A   B           C                            D

we'd know -> we had known 

Câu 40: I had gone to see you if I’d known that you were ill.

                  A                 B                     C                           D

had gone -> would have gone 

Câu 41:I  think you should ………. up late at night.

A. stayed B. Staying C. stay D. to stay

Câu 42: If I  ……….. again, I think that I would have succeeded.

A. had tried B. tried C. try D. trying

Câu 43: If you feel bored, you should …………. away for a few days.

A. went B. gone C. to go D. go

Câu 44: Water……….down hill if there weren’t gravity.

A. won’t run B. didn’t run C. wouldn’t have run D. wouldn’t run

Câu 45: If I  ................ you, I wouldn’t buy that coat.

A. would be B. was C. were D. Am

Câu 46: What would happen if I…………. that red button.

A. had pressed B. press C. was pressed D. pressed

Câu 47: He will get fat if he ……… smoking.

A. stops B. had stopped C. did stop D. stopped

48. Sally……….the phone if she were in the room now.

A. will answer B. shall answer C. would answer D. answered

49. I wonder where Mai is. She should ________ here by now.

A. be B. is C. to be D. being

17 tháng 3 2022

em cảm mơn nhiều ạ 

17 tháng 3 2022

Câu 1:

Áp dụng BĐT Cô si cho 4 số dương, ta có:

\(a^4+b^4+c^4+d^4\ge4.^4\sqrt{\left(abcd\right)^4}=4abcd\)

Dấu "=" \(\Leftrightarrow a=b=c=d\)

Câu 2:

Gọi quãng đường AB là x km (x>0)

\(V_{tb}=\dfrac{S}{t}=\dfrac{x}{\dfrac{x}{\dfrac{2}{20}}+\dfrac{x}{\dfrac{2}{30}}}=\dfrac{x}{\dfrac{x}{40}+\dfrac{x}{60}}=\dfrac{x}{\dfrac{5x}{120}}=\dfrac{120x}{5x}=\dfrac{120}{5}=24\left(\text{km/h}\right)\)

Vậy ...

17 tháng 3 2022

cảm ơn ạ :D

 

Câu 1: Cho hình bình hành ABCD. Phép tịnh tiến \(T_{\overrightarrow{DA}}\) biếnA. B thành CB. C thànhBC. C thành AD. A thành DCâu 2: Cho hình bình hành ABEF. Gọi D,C lần lượt là trung điểm của AF và BF, O là giao điểm của AC và BD, I là giao điểm của FC và DE. Phép tịnh tiến \(T_{\overrightarrow{FI}}\) biến tam giác DIF thành tam giác nào sau đây:A. \(\Delta AOD\)B. \(\Delta CIE\)C. \(\Delta OBC\)D. \(\Delta OCI\)Câu 3: Trong mặt phẳng, phép tịnh...
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Câu 1: Cho hình bình hành ABCD. Phép tịnh tiến \(T_{\overrightarrow{DA}}\) biến

A. B thành C

B. C thànhB

C. C thành A

D. A thành D

Câu 2: Cho hình bình hành ABEF. Gọi D,C lần lượt là trung điểm của AF và BF, O là giao điểm của AC và BD, I là giao điểm của FC và DE. Phép tịnh tiến \(T_{\overrightarrow{FI}}\) biến tam giác DIF thành tam giác nào sau đây:

A. \(\Delta AOD\)

B. \(\Delta CIE\)

C. \(\Delta OBC\)

D. \(\Delta OCI\)

Câu 3: Trong mặt phẳng, phép tịnh tiến \(T_{\overrightarrow{v}}\left(A\right)=B\) và \(T_{\overrightarrow{v}}\left(C\right)=D\)  với \(\left(\overrightarrow{v}\ne\overrightarrow{0}\right)\) Mệnh đề nao sau đây sai?

A. \(\overrightarrow{AC}=\overrightarrow{BD}\)

B. \(\overrightarrow{AB}=\overrightarrow{CD}\)

C. \(\overrightarrow{AD}=\overrightarrow{CB}\)

D. \(AB=CD\)

Câu 4: Trong mặt phẳng tọa độ Oxy cho \(\overrightarrow{v}=\left(3;1\right)\). Tìm tọa độ của điểm \(M'\) là ảnh của điểm \(M\left(-2;1\right)\) qua phép tịnh tiến theo véc tơ \(\overrightarrow{v}\)

A. \(M'\left(5;0\right)\)

B. \(M'\left(1;2\right)\)

C. \(M'\left(-5;0\right)\)

D. \(M'\left(5;2\right)\)

Câu 5: Trong mặt phẳng tọa độ Oxy cho điểm \(M\left(-2;1\right)\). Tìm tọa độ điểm N sao cho M là ảnh của N qua phép tịnh tiến theo véc tơ \(\overrightarrow{v}=\left(-3;2\right)\) 

A. N(1;3)

B. N(1;-1)

C. N(-1;-1)

D. N(-5;3)

Câu 6: Trong mặt phẳng tọa độ Oxy, cho hai điểm M(2;3) và N(1;-1). Phép tịnh tiến theo véc tơ \(\overrightarrow{v}\) biến điểm M thành điểm N. Khi đó ta có:

A.\(\overrightarrow{v}=\left(3;2\right)\)

B. \(\overrightarrow{v}=\left(-1;-4\right)\)

C. \(\overrightarrow{v}=\left(1;4\right)\)

D. \(\overrightarrow{v}=\left(-3;2\right)\)

Câu 7: Trong mặt phẳng Oxy và đường tròn \(\left(C\right):x^2+y^2-2x+4y-4=0\).  Viết phương trình đường tròn (C') là ảnh của (C) qua \(T\overrightarrow{v}\)

A. \(\left(x-4\right)^2+\left(y-1\right)^2=4\)

B. \(\left(x+4\right)^2+\left(y+1\right)=9\)

C. \(\left(x-4\right)^2+\left(y-1\right)^2=9\)

D. \(x^2+y^2+8x+2y-4=0\)

Câu 8: Trong mặt phẳng tọa độ, xác định của đường thẳng \(\left(d\right):x+y-2=0\) qua phép tịnh tiến theo véc tơ \(\overrightarrow{v}=\left(-3;0\right)\)

A. x+y+3=0

B. x-y-2=0

C. x+y+2=0

D. x+y+1=0

0
16 tháng 10 2021

a: Xét tứ giác AECK có 

AK//CE

AK=CE

Do đó: AECK là hình bình hành

Câu 1: 

Ta có: \(ax+\left(2a-1\right)y+3=0\)

\(\Leftrightarrow\left(2a-1\right)y=-ax-3\)

\(\Leftrightarrow y=\dfrac{-ax-3}{2a-1}\)

Để (d) đi qua điểm M(1;-1) thì

Thay x=1 và y=-1 vào hàm số \(y=\dfrac{-ax-3}{2a-1}\), ta được:

\(\dfrac{-a\cdot1-3}{2a-1}=-1\)

\(\Leftrightarrow-a-3=-1\left(2a-1\right)\)

\(\Leftrightarrow-a-3=-2a+1\)

\(\Leftrightarrow-a+2a=1+3\)

hay a=4

Vậy: a=4

và hệ số góc của (d) là 4