K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

24 tháng 1 2021

b.(a+b)-(b-a)+c=2a+c

Xét VT: (a+b)-(b-a)+c = a + b - b + a + c = 2a+c

Mà VP = 2a+c

=> VT = VP 

c.-(a+b-c)+(a-b-c)=-2b

Xét VT: -(a+b-c)+(a-b-c) = -a - b + c + a - b - c = -2b

Mà VP = -2b

=> VT = VP

d.a(b+c)-a(b+d)=a(c-d)

Xét VT: a(b+c)-a(b+d) = ab + ac - ab - ad =  ac - ad = a(c-d)

Mà VP = a(c-d)

=> VT = VP

e.a(b-c)+a(d+c)=a(b+d)

Xét VT: a(b-c)+a(d+c)= ab -ac + ad + ac = ab + ad = a(b+d)

Mà VP = a(b+d)

=> VT = VP

26 tháng 12 2016

Choose the word that has the stress differently:

1. A. Mountain B. forest C. National D. Pagoda

2. A. Citadel B. Museum C. Badmintoin D. chocolate

3. A.Usually B. Packet C. Collect D. Language

4. A. Animal B. Buffalo C. Tomorrow D. Beautiful

26 tháng 12 2016

1. D. Pagoda

2. B. Museum

3. C. Collect

4. C Tomorrow

4 tháng 5 2023

1c

Âm /aʊ/ còn lại âm /əʊ/

2b

Âm /ð/ còn lại âm /θ/

3 Có phải c3 là trọng âm không ạ?

4c

ÂM /d/ còn lại âm /id/

4 tháng 5 2023

em cảm ơn

Mọi người giúp mk nha , mai mk học chuyên đề bài này rồi . Bài này là về Tiếng Anh .1 . Put the words into two groups ( / i: / ; / i / ) :Cheap slim noisy see thing meal exciting convenientSea village peaceful beach busy historic friendly policeRiver sleepy sit leave milk teen street city / i: / : ............................................................................................../ i / :...
Đọc tiếp

Mọi người giúp mk nha , mai mk học chuyên đề bài này rồi . Bài này là về Tiếng Anh .

1 . Put the words into two groups ( / i: / ; / i / ) :

Cheap slim noisy see thing meal exciting convenient

Sea village peaceful beach busy historic friendly police

River sleepy sit leave milk teen street city

/ i: / : ..............................................................................................

/ i / : ......................................................................................................

2. Find which word dose not belong to each group :

1. A. sunny B. beaches C. weather D. supermarket

2. A. big B . tall C. wide D. expensive

3. A. market B . memorial C. park D. suburd

4. A. boring B. exciting C. convenient D. interesting

5. A. cross B. turn C . straight D. buy

6. A. blue B yellow C . pink D. apple

7. A . police B . car C . farmer D . driver

Các bạn giúp mk nha , bài 2 thì các bạn chỉ cần ghi số câu rồi ghi kết quả thôi . Thank kiu mọi người .

 

1
21 tháng 10 2016

1 . Put the words into two groups ( / i: / ; / i / ) :

Cheap slim noisy see thing meal exciting convenient

Sea village peaceful beach busy historic friendly police

River sleepy sit leave milk teen street city

/ i: / : Cheap, see, meal, convenient, sea, peaceful, beach, police.

/ i / : Slim, noisy, thing, exciting, village, busy, historic, friendly.

2. Find which word dose not belong to each group :

1. A. sunny B. beaches C. weather D. supermarket

(Chắc là do mỗi sunny là tính từ... tớ không chắc câu này)

2. A. big B . tall C. wide D. expensive

3. A. market B . memorial C. park D. suburd

4. A. boring B. exciting C. convenient D. interesting

5. A. cross B. turn C . straight D. buy

6. A. blue B yellow C . pink D. apple

7. A . police B . car C . farmer D . driver

22 tháng 10 2016

Hem có gì ;)

11 tháng 12 2021

1. on => in

2. brush => brushes

3. to => of

4. more => most

11 tháng 12 2021

1. ? là sao ạ có phải in thành on đúng ko ạ 

 

26 tháng 2 2021

Bài 1: Tìm từ không cùng nhóm với các từ còn lại.

1. a. bottle b. packet c. dozen d. Box

Câu trả lời của bạn

2. a. tea b. oil c. soda d. Milk

Câu trả lời của bạn

3. a. beef b. fish c. chicken d. Soap

Câu trả lời của bạn

4. a. sandwich b. want c. like d. Need

Câu trả lời của bạn

5. a. breakfast b. lunch c. eat d. dinner

BÀI 1: Chọn từ khác loại.Question 1: A. cough          B. weak          C. headache          D. sore throatQuestion 2: A. sunburn         B. toothache          C. earache          D. unhealthyQuestion 3: A. sick         B. temperature         C. tired          D. weakQuestion 4: A. flu          B. stomachache         C. allergy          D. fatQuestion 5: A. sleep          B. happy         C. live          D. smileBÀI 2: Chọn đáp án đúng để hoàn thành câu.Question 6: You should eat...
Đọc tiếp

BÀI 1: Chọn từ khác loại.

Question 1: A. cough          B. weak          C. headache          D. sore throat

Question 2: A. sunburn         B. toothache          C. earache          D. unhealthy

Question 3: A. sick         B. temperature         C. tired          D. weak

Question 4: A. flu          B. stomachache         C. allergy          D. fat

Question 5: A. sleep          B. happy         C. live          D. smile

BÀI 2: Chọn đáp án đúng để hoàn thành câu.

Question 6: You should eat ______fruits and vegetables because they are good for your health.

A. more           B. less

C. little           D. no

 

Question 7: She looks very tired after coming back from work. She should rest ______.

A. more           B. less

C. little           D. no

Question 8: We should spend ______time on computer games.

A. more           B. less

C. little           D. no

Question 9: Drink ______ green tea and ______ coffee.

A. more/less          B. less /less

C. little/more           D. no/little

Question 10: Smoking can lead to lung cancer, so smoke ______.

A. more           B. less

C. little           D. no

Question 11: _______ vegetables everyday is important.

A. eat           B. to eat

C. eating           D. eats

BÀI 3: Chọn câu đúng.

Question 12:

A. I have stomach ache, so I don't want to eat anything.

B. I have stomach ache, or I don't want to eat anything.

Question 13:

A. My mother eats a lot of fruit and vegetables, so she does exercise every morning.

B. My mother eats a lot of fruit and vegetables, and she does exercise every morning.

Question 14:

A. My cousin, Trang is very fat, but she is too lazy to walk.

B. My cousin, Trang is very fat, or she is too lazy to walk.

Question 15:

A. You can eat less, but you can do more exercise.

B. You can eat less, or you can do more exercise.

BÀI 2: Chọn đáp án đúng để hoàn thành câu.

Question 6: You should eat ______fruits and vegetables because they are good for your health.

A. more           B. less

C. little           D. no

Question 7: She looks very tired after coming back from work. She should rest ______.

A. more           B. less

C. little           D. no

Question 8: We should spend ______time on computer games.

A. more           B. less

C. little           D. no

Question 9: Drink ______ green tea and ______ coffee.

A. more/less          B. less /less

C. little/more           D. no/little

Question 10: Smoking can lead to lung cancer, so smoke ______.

A. more           B. less

C. little           D. no

Question 11: _______ vegetables everyday is important.

A. eat           B. to eat

C. eating           D. eats

BÀI 3: Chọn câu đúng.

Question 12:

A. I have stomach ache, so I don't want to eat anything.

B. I have stomach ache, or I don't want to eat anything.

Question 13:

A. My mother eats a lot of fruit and vegetables, so she does exercise every morning.

B. My mother eats a lot of fruit and vegetables, and she does exercise every morning.

Question 14:

A. My cousin, Trang is very fat, but she is too lazy to walk.

B. My cousin, Trang is very fat, or she is too lazy to walk.

 

Question 15:

A. You can eat less, but you can do more exercise.

B. You can eat less, or you can do more exercise.

B. Vocabulary and Grammar

Question 1: Thank you. This information ________ me a lot.

A. helps           B. benefits

C. volunteer          D. A + B

 

Question 2: All of these books and clothes will be ________ to children in Ha Giang.

A. encouraged          B. donated

C. clean          D. All are correct.

Question 3: My mom often asks me to ________ my room on the weekend.

A. stay           B. volunteer

C. make           D. clean up

 

Question 4: Students often make postcards and sell them to ________ to help the poor.

A. Ø           B. raise funds

C. raise money           D. Both B & C

Question 5: Try to study harder and be more active to ________ your life.

A. make a difference           B. raise money

C. clean up           D. improve

Question 6: My sister works as a volunteer at a _______ in the city.

A. donate          B. shelter

C. community          D. homeless

Question 7: Nowadays, a lot of ________ live in a nursing home.

A. homeless people           B. elderly people

C. street children           D. disabled people.

Question 8: There are a lot of ________ after the storm.

A. homeless people           B. elderly people

C. nursing home           D. None are correct.

Question 9: We ____ to the cinema last night.

A. go           B. went

C. have gone           D. has gone

Question 10: We ____ 2 hours reading Physics books yesterday.

A. spent           B. spend

C. was spent           D. had spend

Question 11: Trang ____ me 20 minutes ago.

A. phones          B. phoned

C. had phoned          D. has phoning

Question 12: I wish I _____ his name.

A. know           B. knew

C. known           D. had knew

Question 13: John was reading a book when I ____ him.

A. seen           B. had saw

C. had seen           D. saw

Question 14: Yesterday, I _____ to the restaurant with a client.

A. gone           B. go

C. went           D. was gone

Question 15: What ___ you do last night?

A. did           B. do

C. will           D. should

 

 

 

 

4
30 tháng 10 2021

BÀI 1: Chọn từ khác loại.

Question 1: A. cough    B. weak     C. headache          D. sore throat

Question 2: A. sunburn         B. toothache          C. earache   D. unhealthy

Question 3: A. sick         B. temperature         C. tired          D. weak

Question 4: A. flu          B. stomachache         C. allergy          D. fat

Question 5: A. sleep          B. happy         C. live          D. smile

BÀI 2: Chọn đáp án đúng để hoàn thành câu.

Question 6: You should eat ______fruits and vegetables because they are good for your health.

A. more           B. less

C. little           D. no

 

Question 7: She looks very tired after coming back from work. She should rest ______.

A. more           B. less

C. little           D. no

Question 8: We should spend ______time on computer games.

A. more           B. less

C. little           D. no

Question 9: Drink ______ green tea and ______ coffee.

A. more/less          B. less /less

C. little/more           D. no/little

Question 10: Smoking can lead to lung cancer, so smoke ______.

A. more           B. less

C. little           D. no

Question 11: _______ vegetables everyday is important.

A. eat           B. to eat

C. eating           D. eats

BÀI 3: Chọn câu đúng.

Question 12:

A. I have stomach ache, so I don't want to eat anything.

B. I have stomach ache, or I don't want to eat anything.

Question 13:

A. My mother eats a lot of fruit and vegetables, so she does exercise every morning.

B. My mother eats a lot of fruit and vegetables, and she does exercise every morning.

Question 14:

A. My cousin, Trang is very fat, but she is too lazy to walk.

B. My cousin, Trang is very fat, or she is too lazy to walk.

Question 15:

A. You can eat less, but you can do more exercise.

B. You can eat less, or you can do more exercise.

BÀI 2: Chọn đáp án đúng để hoàn thành câu.

Question 6: You should eat ______fruits and vegetables because they are good for your health.

A. more           B. less

C. little           D. no

Question 7: She looks very tired after coming back from work. She should rest ______.

A. more           B. less

C. little           D. no

Question 8: We should spend ______time on computer games.

A. more           B. less

C. little           D. no

Question 9: Drink ______ green tea and ______ coffee.

A. more/less          B. less /less

C. little/more           D. no/little

Question 10: Smoking can lead to lung cancer, so smoke ______.

A. more           B. less

C. little           D. no

Question 11: _______ vegetables everyday is important.

A. eat           B. to eat

C. eating           D. eats

BÀI 3: Chọn câu đúng.

Question 12:

A. I have stomach ache, so I don't want to eat anything.

B. I have stomach ache, or I don't want to eat anything.

Question 13:

A. My mother eats a lot of fruit and vegetables, so she does exercise every morning.

B. My mother eats a lot of fruit and vegetables, and she does exercise every morning.

Question 14:

A. My cousin, Trang is very fat, but she is too lazy to walk.

B. My cousin, Trang is very fat, or she is too lazy to walk.

 

Question 15:

A. You can eat less, but you can do more exercise.

B. You can eat less, or you can do more exercise.

B. Vocabulary and Grammar

Question 1: Thank you. This information ________ me a lot.

A. helps           B. benefits

C. volunteer          D. A + B

 

Question 2: All of these books and clothes will be ________ to children in Ha Giang.

A. encouraged          B. donated

C. clean          D. All are correct.

Question 3: My mom often asks me to ________ my room on the weekend.

A. stay           B. volunteer

C. make           D. clean up

 

Question 4: Students often make postcards and sell them to ________ to help the poor.

A. Ø           B. raise funds

C. raise money           D. Both B & C

Question 5: Try to study harder and be more active to ________ your life.

A. make a difference           B. raise money

C. clean up           D. improve

Question 6: My sister works as a volunteer at a _______ in the city.

A. donate          B. shelter

C. community          D. homeless

Question 7: Nowadays, a lot of ________ live in a nursing home.

A. homeless people           B. elderly people

C. street children           D. disabled people.

Question 8: There are a lot of ________ after the storm.

A. homeless people           B. elderly people

C. nursing home           D. None are correct.

Question 9: We ____ to the cinema last night.

A. go           B. went

C. have gone           D. has gone

Question 10: We ____ 2 hours reading Physics books yesterday.

A. spent           B. spend

C. was spent           D. had spend

Question 11: Trang ____ me 20 minutes ago.

A. phones          B. phoned

C. had phoned          D. has phoning

Question 12: I wish I _____ his name.

A. know           B. knew

C. known           D. had knew

Question 13: John was reading a book when I ____ him.

A. seen           B. had saw

C. had seen           D. saw

Question 14: Yesterday, I _____ to the restaurant with a client.

A. gone           B. go

C. went           D. was gone

Question 15: What ___ you do last night?

A. did           B. do

C. will           D. should

bạn ơi tách ra:v

29 tháng 10 2016

1. A. that B. mother C. this D. three

2. A. listen B. it C. ten D . sister

3. A.Who B. What C.White D. where

4. A.eraser B. sneaker C. house D. six

5. A. thank B. they C. these D. that

29 tháng 10 2016

1.D

2.A

3.A

4.A

5.A

3 tháng 4 2023

Rieieifi

 

23 tháng 7 2017

1. Chọn từ có cách phát âm khác với những từ còn lại:

1. A. these B. this C.that D.thanks

2.a. map b.bag c. Monday d. have

3.a. Twenty b. early c. pretty d. fly

4.a. Find b. miss c. live d. think

5.a. child b. chair c. chemis d. cheap

Những từ được in đậm là những từ được gạch chân!

2. Tìm từ khác loại:

1.a. Russian b. Holland c. American d. Japanese

2.a. draw b.teacher c. worker d. cook

3.a. house b. room c. home d. kitchen

4.a. and b. in c. but d. so

5.a. warm b. cold c. cool d. weather

23 tháng 7 2017

1.Chọn từ có cách phát âm khác với những từ còn lại

1.D

2.C

3.D

4.A

5.C

2.Tìm từ khác loại

1.d

2.a

3.c

4.b

5.d

1.