Dịch: Tuổi Minh hiện tại bằng 1/4 tuổi Hoa . Sau 4 năm thì tuổi Minh bằng 1/3tuổi Hoa . Hỏi trước đây bao nhiêu năm thì tuổi Minh bằng 1919 tuổi Hoa?

Bài làm:

Gọi tuổi Minh hiện tại là x(x>0)x(x>0)

→→ Tuổi Hoa hiện tại là 4x4x

Sau 44 năm thì tuổi Minh là x+4x+4 tuổituổi

Sau 44 năm thì tuổi Hoa là 4x+44x+4 tuổituổi

Theo bài ra ta có :

3(x+4)=4x+43(x+4)=4x+4

3x+12=4x+43x+12=4x+4

→x=8→x=8(tuổi)(tuổi)

Vậy tuổi Minh hiện tại là 88 tuổi

Vậy tuổi Minh hiện tại là 88x4=324=32 tuổi

Gọi số năm trước đây khi tuổi Minh bằng 1919 tuổi Hoa là aa (0<a≤8)(0<a≤8)

Vậy số tuổi trước đây lúc tuổi Minh bằng 1919 tuổi Hoa của Minh và Hoa lần lượt là 

8−a8-a tuổi và 32−a32-a tuổi 

Theo bài ra ta có :

9(8−a)=32−a9(8-a)=32-a

72−9a=32−a72-9a=32-a

40=8a40=8a

→a=5→a=5 năm

Vậy trước đây 55 năm thì tuổi Minh bằng 1919 tuổi Hoa.

I went to Sam Son Beach                      k mik nha

WHERE DIDYOU GO ON YOUR HOLIDAY?

\(\Rightarrow\) I WENT TO ..sea

HT

1. School ................at 4.30pm every day.

A. Finish                B. finishing            C. to finish           D. finishes

2. How....................you often..........to school?

A. do/go                B. does/ go              C.do/go               D. does/goes.

3. It’s warm to day. I don’t want to.............at home, now.

A. staying             B. to stay             C. stays                 D.. stay

4. Look! the bus..............

A. come               B.is coming          C. to come             D.comes

5. My family s...............our summer holiday at seaside.

A. to spend          B. spent                 C. spending           D. spend

1. School ................at 4.30pm every day.

A. Finish                B. finishing            C. to finish           D. finishes

2. How....................you often..........to school?

A. do/go                B. does/ go              C.do/go               D. does/goes.

3. It’s warm to day. I don’t want to.............at home, now.

A. staying             B. to stay             C. stays                 D.. stay

4. Look! the bus..............

A. come               B.is coming          C. to come             D.comes

5. My family s...............our summer holiday at seaside.

A. to spend          B. spent                 C. spending           D. spend

54.B

55.B

56.C

57.A

58.B

59.C

60.C

HT

45.A

46.C

47.D

48.D

49.C

50.B

51.D

52.B

53.C

HT

45.Lan: “…… are you doing, Mai?” – Mai: “I’m reading books.”

        A. What                 B. Who                     C. Which                               D. When

46.Mr Anh: “…… sports do you play, Binh?” – “Binh: I play soccer.”

        A. Where                B. Who                     C. Which                               D. When

47.What do you do in your …… time?

        A. home                 B. busy                     C. good                               D. free

48.“How …… do you go swimming?” – Mai: “Once a week.”

        A. many                 B. much                    C. old                               D. often

49.Thu’s brother plays tennis three …… a week.

        A. time                   B. day                       C. times                               D. hour

50.My students sometimes …… their kites.

        A. play                   B. fly                        C. flys                               D. run

51“…… does Jack often do on Saturdays?” – “He often goes fishing.”

        A. When.               B. Why                     C. Where                               D. What

52.How …… seasons are there in a year?

        A. much                 B. many                    C. long                                D. often

53.George …… before he goes to school.

A. usually is swimming

B. is usually swimming

C. usually swims

D. swims usually

40. The pharmacy is between the bookshop……………..the supermarket.

A.on                              B.and                            C,to                     D.opposite

41.………….sausages do you eat a day? I eat  two sausages

A.How much          B.How many   C.How old             D.How far

42. What do you think of  Nhat Tan bridge ? It’s …………… than I expected

A.longer               B.more long              C.longs              D.more longer

43.The pharmacy is ………………to  the bookshop

A.near                   B.next                      C.on               D.opposite

44. She …… doing aerobics now.

        A. are                     B. does                     C. is                               D. has

TOK MỌI NGƯỜI XONG NHANG 

38.b

39.a

ht

38.Sydney./ than /is /HaLong City/beautiful/more/

A.Ha Long City is beautiful more than Sydney.

B.Ha Long City is more beautiful than Sydney

C.Sydney is more beautiful than Ha Long City.

D.Sydney is beautiful than more Ha Long city.

39. My name is Tung. Last weekend, I visited Dam Sen Park. It is  a beautiful park. It is not far from the centre of Ho Chi Minh city.

Where did he visited last weekend? ………………………..

A.He visited DamSen Park

B.He visited Thu Le zoo

C.He visit Dam Sen Park

D.He visits Dam Sen Park.

1.B

2.B

HT

Lan lives__________20 Nguyen Tat Thanh Street.

    A. on               B. at                 C. to                  D. in

37.What …………..the weather be tomorrow ? It’ll be cold and foggy

 A.is                     B.will                           C.were        D.  was

 đáp án c :>

My brotheris the__________ in my family.

A. more intelligent                   B. intelligent

C. most intelligent                    D. less intelligent

Tra loi:

The life in the countryside is more peaceful than I expeted.

hoc tot

Trả lời:

The life in countryside is more peaceful than I expeted.

HT