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10 tháng 8 2017

II/ choose the word having the underlined letters pronounced differently (phần này mình không gạch chân được nên thay bằng dấu ngoặc nha, xin lỗi nhiều lắm)

1. A. miss(ed) B. cur(ed) C. watch(ed) D. laugh(ed)

2. A. (g)lad B. (g)old C. (g)rowth D. (g)entle

3. A. plant(ed) B. need(ed) C. Notic(ed) D. intend(ed)

4. A. h(a)ll B. b(a)ll C. pr(a)y D. sm(a)ll

10 tháng 8 2017

1. B

2.D

3.C

4.C

10 tháng 8 2017

1. (A) t(e)chnique (B) el(e)ctric (C) r(e)source (D) d(e)ntist

2. (A) n(i)ce (B) k(i)nd (C) m(i)ll (D) f(i)ne

3. (A) requir(ed) (B) visit(ed) (C) sav(ed) (D) imporv(ed)

4. (A) (wh)ole (B) (wh)ich (C) (wh)ile (D) (wh)ere

15 tháng 1 2021

1. (A) t(e)chnique (B) el(e)ctric (C) r(e)source (D) d(e)ntist

2. (A) n(i)ce (B) k(i)nd (C) m(i)ll (D) f(i)ne

3. (A) requir(ed) (B) visit(ed) (C) sav(ed) (D) imporv(ed)

4. (A) (wh)ole (B) (wh)ich (C) (wh)ile (D) (wh)ere

26 tháng 11 2021

\(A=x^2-4xy+4y^2+2x-4y+1+y^2+2y+1+2008\)

\(A=\left(x-2y\right)^2+2\left(x-2y\right)+1+\left(y+1\right)^2+2008\)

\(A=\left(x-2y+1\right)^2+\left(y+1\right)^2+2008\ge2008\)

\(\Rightarrow A_{min}=2008\Leftrightarrow\left\{{}\begin{matrix}x-2y+1=0\\y+1=0\end{matrix}\right.\)\(\Leftrightarrow\left\{{}\begin{matrix}x=-3\\y=-1\end{matrix}\right.\)

26 tháng 11 2021

mình cảm ơn ạ.

Có bạn nào biết mấy bài này không ? Giúp mình vs. Mình đang cần gấp lắm.                                       UNIT 10: HEALTH AND HYGIENE               I. Choose one word with underlined part pronounced differently from the others1. A. wanted                   B. needed              C. looked              D. visited2. A. bus                         B. busy                 C. unhappy           D. cut3. A. looked                    B. walked             C. learned             ...
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Có bạn nào biết mấy bài này không ? Giúp mình vs. Mình đang cần gấp lắm.

                                       UNIT 10: HEALTH AND HYGIENE              

I. Choose one word with underlined part pronounced differently from the others
1. A. wanted                   B. needed              C. looked              D. visited
2. A. bus                         B. busy                 C. unhappy           D. cut
3. A. looked                    B. walked             C. learned              D.stopped
4. A. party                      B. apartment         C. far                     D. practice
5. A. stay                        B. late                   C. back                  D. date

6. A. laughed                  B. looked              C. collected           D. missed

7. A. asked                     B. missed              C. called               D. cooked

8. A. changed                 B. measured          C. brushed            D. talked

 

II. Choose the best answer to complete each sentence.

1.We’ll meet……………..the movies theater.           

A. in front of                  B. next to                       C. on                    D. opposite
2.Did you …….. to school yesterday.
A. go                                B. went                            C. going                D. goes.
3. It’s not far…………..here, so I often walk.
A. to                                 B. with                             C. from                 D. over
4.………………….to meet you Hoa.
A. Please                          B. Pleased                       

C. I’m please                  D. None is correct
5.Hoa is sad, because she knows …………………here.
A. someone                      B. anyone                         C. no one                   D. everyone
6.Her new school is……………than her old one.
A. bigger                          B. large                            C. beautiful                D. more
7.My brother is ………………grade 7.
A. at                                 B. in                                 C. on                          D. of
8.Everyday he………….the bus to work.
A. gives                           B. comes                          C. catches                  D. goes
9.Lan is staying…………..her aunt’s house in Hanoi now.
A. in                                 B. on                               C. with                       D. at
10.It often ……………me 15 minutes to go to school by bike.
A. takes                     B. gets                             C. gives                       D. has

11. They suggested that he…………. by bike or public transport.

A. should travel         B. might travel             C. travels                     D. traveledp

12. The light…………… so we couldn’t see any thing in the dark.

A. went                     B. went off                   C. went by                   D. went out

13. You should get a ………..to check if there is any crack in the pipe.

A. electrician             B.plumber                 C. carpenter                 D. goldsmith

14.Is it true……………. the law says there is no smoking in restaurant in this city?

A.that what                B. what                        C. if                             D. that

15. Lan is a…………………typist. She often makes many spelling mistakes.

A. careful                  B. care                      C. careless                   D.carelessly

16. Where …………. you last Sunday ?

     a. is                          b. was                    c. are                               d. were

17. Last week, Mr. Tan…………….to Ho Chi Minh City for a trip.

     a. go                         b. went                   c. going                            d. goes

18. What is your …………, Lan? – I’m 45 kilos.

     a. weight                  b. height                c. age                               d. name

19. ……………is this book? – It’s 4,000 dong.

     a. How much           b. How old            c. How many                   d. How tall

20. Yesterday, I …………….to school because I was sick.

     a. goes                     b. go                      c. went                             d. didn’t go

21. Hoa ………………her teeth three times every day.

     a. brushes                 b. brushing             c. brush                            d. brushed

22. Did you buy any souvenirs in Nha Trang ? + Yes, I ……………

     a. do                         b. am                     c. does                             d. did

23. I live ……………Quang Tri town with my grandmother.

     a. on                         b. at                        c. between                       d. in

24. ……………..did Lan go to the dentist’s last week? – Because she had a bad toothache.

     a. What                    b. Why                  c.When                            d. Where

25. Would you………….…me to the post office, please?

     a. take                      b. took                   c. taking                           d. Take

III. Read the passage and answer the following questions.
        Mr Hai has two job. On Monday, Tuesday and Wednesday he works in a hospital where he  helps to look after children who are ill. He goes to the hospital by bus. He starts job at ten o’clock and works until quarter to five. He stay at home on Thursday and Friday, he writes stories. Last night one of his roommates cooked the meal. After dinner, they looked at the newspapers to see what’s on TV and they talked about the day.

1/ How many jobs does Mr Hai have ?

………………………………………......................................................................

2/ Where does he work ?

………………………………………………...........................................................

3/ What time does he start job ?

………………………………………………...........................................................

4/ Does he write stories ?

………………………………………………...........................................................

5/ What did he and his roomate do last night?

……………………………………………………………………………....................

IV. Write the past form of the verbs.       

1. stop    ……………          2. forget   ……………              

3. wash ……………....        4. send     ……………         

V. Rewrite the sentences using the printed phrases so that they have the same meaning

1. What is Lan’s weight?

=> How …………………………………………….…………….………..?

2. How old are you? 

=> What is …………………………………..…………………………?

3. How tall is he?

=> What………………………………………………………………...……?

4
25 tháng 1 2022

I.

1, C

2, B

3, C

4, D

5, C

6, C

7, C

8, B

 

bn tách ra đi, chứ nhìn qua thấy nản lắm/:

PTHH: \(Al_2O_3+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

Ta có: \(\left\{{}\begin{matrix}m_{H_2SO_4}=588\cdot5\%=29,4\left(g\right)\Rightarrow n_{H_2SO_4}=\dfrac{29,4}{98}=0,3\left(mol\right)\\n_{Al_2O_3}=\dfrac{20,4}{102}=0,2\left(mol\right)\end{matrix}\right.\)

Xét tỉ lệ: \(\dfrac{0,2}{1}>\dfrac{0,3}{3}\) \(\Rightarrow\) Al2O3 còn dư

\(\Rightarrow n_{Al_2\left(SO_4\right)_3}=0,1\left(mol\right)=n_{Al_2O_3\left(dư\right)}\)

\(\Rightarrow C\%_{Al_2\left(SO_4\right)_3}=\dfrac{0,1\cdot342}{20,4+588-0,1\cdot102}\cdot100\%\approx5,72\%\)

31 tháng 12 2021

d

Thấy gì đâu??

25 tháng 3 2022

._.?

A.Choose the word which has the underlined part pronounced differently from the rest. ( mình hong gạch chân đc nên mình in đậm nha)1. A. purchase                    B. husband                      C. lunch                        D. love2. A. education                   B. question                     C. information             D. occupation3. A. plough                       B. housewife                    C. about                     D. neighbour4. A. fellow                       B....
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A.Choose the word which has the underlined part pronounced differently from the rest. ( mình hong gạch chân đc nên mình in đậm nha)

1. A. purchase                    B. husband                      C. lunch                        D. love

2. A. education                   B. question                     C. information             D. occupation

3. A. plough                       B. housewife                    C. about                     D. neighbour

4. A. fellow                       B. harrow                        C. nowadays               D. tomorrow

B.Choose the word which is stressed different from the rest

5.  A. routine                   B. alarm                           C. exact                     D. kitchen

6. A. literature                B. geography                   C. physics                  D. chemistry

7. A. content                  B. buffalo                         C. peasant                 D. local

8. A. harrow                  B. neighbour                     C. children              D. tobacco

1
17 tháng 10 2021

1. A. purchase                    B. husband                      C. lunch                        D. love

2. A. education                   B. question                     C. information             D. occupation

3. A. plough                       B. housewife                    C. about                     D. neighbour

4. A. fellow                       B. harrow                        C. nowadays               D. tomorrow

B.Choose the word which is stressed different from the rest

5.  A. routine                   B. alarm                           C. exact                     D. kitchen

6. A. literature                B. geography                   C. physics                  D. chemistry

7. A. content                  B. buffalo                         C. peasant                 D. local

8. A. harrow                  B. neighbour                     C. children              D. tobacco

21 tháng 10 2021

\(d,ĐK:x\ge1\\ PT\Leftrightarrow\sqrt{x-1}=2+\sqrt{x+1}\\ \Leftrightarrow x-1=2+x+1+4\sqrt{x+1}\\ \Leftrightarrow4\sqrt{x+1}=-4\Leftrightarrow x\in\varnothing\left(4\sqrt{x+1}\ge0\right)\\ g,ĐK:x\ge\dfrac{1}{2}\\ PT\Leftrightarrow x+\sqrt{2x-1}+x-\sqrt{2x-1}+2\sqrt{\left(x+\sqrt{2x-1}\right)\left(x-\sqrt{2x-1}\right)}=2\\ \Leftrightarrow2x+2\sqrt{x^2-2x+1}=2\\ \Leftrightarrow\sqrt{\left(x-1\right)^2}=\dfrac{2-2x}{2}=1-x\\ \Leftrightarrow\left|x-1\right|=1-x\\ \Leftrightarrow\left[{}\begin{matrix}x-1=1-x\left(x\ge1\right)\\x-1=x-1\left(x< 1\right)\end{matrix}\right.\Leftrightarrow\left[{}\begin{matrix}x=1\left(tm\right)\\x\in R\end{matrix}\right.\)

 

Giúp mình hai phần này với ạ!!III. Choose the word which has the underlined part pronounced differently from that of the rest by circling your answer (A/ B/ C or D). (10 points)                                                                                                1.A. islandB. sportsC. bookstoreD. sister2A.see                            B. freeC. agreeD.coffee               3.A. raisedB. practisedC. promisedD. increased4A. dadB. hatC. plantD. happy5A. newB. sewC. fewD. knew ...
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Giúp mình hai phần này với ạ!!

III. Choose the word which has the underlined part pronounced differently from that of the rest by circling your answer (A/ B/ C or D). (10 points)

                                                                                               

1.

A. island

B. sports

C. bookstore

D. sister

2

A.see                            

B. free

C. agree

D.coffee               

3.

A. raised

B. practised

C. promised

D. increased

4

A. dad

B. hat

C. plant

D. happy

5

A. new

B. sew

C. few

D. knew

    

IV. Choose the letter (A/ B/ C or D) next to the word whose main stress is placed differently from the others. (10 points)

1.  A. happen

2.  A. variety

3.  A. moderate

4.  A. writer

5. A. movie

B. study

B. sensible

B. simple

B. baker

B. tomorrow

C. appear

C. appointment

C. invite

C. builder

C. theater

D. wonder

D. continue

D. doctor

D. career

D. moment

2
23 tháng 2 2022

1A

2D

3A

4C

5B

 

1C

2B

3C

4D

5B

23 tháng 2 2022

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