Nguyễn Minh Phương
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Bài 1: Hai dây dẫn làm bằng đồng p=1,7.10-⁸ ôm m,có cùng chiều dài l.Dây thứ nhất có tiết điện S có điện trở R1, Dây thứ hai có tiết điện 25 có điện trở R2=6 ôm.Tính R1
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21:50 26/10/2022
Bài 1: Hai dây dẫn làm bằng đồng p=1,7.10-⁸ ôm m,có cùng chiều dài l.Dây thứ nhất có tiết điện S có điện trở R1, Dây thứ hai có tiết điện 25 có điện trở R2=6 ôm.Tính R1
Bài 2: Hai dây dẫn bằng đồng có cùng chiều dài l.Dây thứ nhất có tiết điện S1=0,5mm² có R1=8,5ôm.Dây thứ hai có R2=127,5 ôm,tiết điện là S2.Tìm S2
Bài 2: Hai dây dẫn bằng đồng có cùng chiều dài l.Dây thứ nhất có tiết điện S1=0,5mm² có R1=8,5ôm.Dây thứ hai có R2=127,5 ôm,tiết điện là S2.Tìm S2
Trả lời (0)
21:20 26/10/2022
Practice 2: Rewrite the following sentences without changing the meanings of the original sentences
7) If she does not hurry,she will be late for school
=>.............
17) He doesn't take exercises. He isn't healthy
=>.............
22) I didn't have an umbrella,so I got wet
=>.............
26) We didn't go on holiday last year because we didn't have enough money
=>.............
30) Peter gets fat because he eats so many chips
=>.............
7) If she does not hurry,she will be late for school
=>.............
17) He doesn't take exercises. He isn't healthy
=>.............
22) I didn't have an umbrella,so I got wet
=>.............
26) We didn't go on holiday last year because we didn't have enough money
=>.............
30) Peter gets fat because he eats so many chips
=>.............
Trả lời (2)
12:47 26/08/2022
6) The queue was getting...( Long)
5) The caravan was rolling ...down the hill ( fast)
( Dạng so sánh kép vs tính từ)
5) The caravan was rolling ...down the hill ( fast)
( Dạng so sánh kép vs tính từ)
Trả lời (1)
16:18 31/07/2022
Practice 0: Give the correct forms of the adjectives or the adverbs in comparisons
(Dạng so sánh hơn,dạng so sánh hơn nhất)
Qt1:(quy tắc tổng quát 1)
Cheap:........Ss hơn.....Ss hơn nhất
Short:................"................"
Small:.............
Qt2:
Fine:...................
Safe:...................
Large
Qt3:(quy tắc tổng quát 2)
Beautiful/beautifully:................
Qt4:
Hot:.....
Big:.....
Fit:......
Sad:.......
Thin:..........
Qt5:(đc coi là tính từ ngắn)
Happy:.....
Early:......
Busy:........
Dirty:........
Easy:...........
Funny:........
Heavy :........
Friendly:.........
Lucky:...........
Pretty:...........
Silly:....…....
Qt6:(vừa đc coi là ngắn/dài)
Quiet:.........
Shallow:...........
Simple:........
Clever:...........
Common:..........
Cruel:.........
Gentle:.........
Pleasant:...........
Polite:.......
Stupid:.........
(Dạng so sánh hơn,dạng so sánh hơn nhất)
Qt1:(quy tắc tổng quát 1)
Cheap:........Ss hơn.....Ss hơn nhất
Short:................"................"
Small:.............
Qt2:
Fine:...................
Safe:...................
Large
Qt3:(quy tắc tổng quát 2)
Beautiful/beautifully:................
Qt4:
Hot:.....
Big:.....
Fit:......
Sad:.......
Thin:..........
Qt5:(đc coi là tính từ ngắn)
Happy:.....
Early:......
Busy:........
Dirty:........
Easy:...........
Funny:........
Heavy :........
Friendly:.........
Lucky:...........
Pretty:...........
Silly:....…....
Qt6:(vừa đc coi là ngắn/dài)
Quiet:.........
Shallow:...........
Simple:........
Clever:...........
Common:..........
Cruel:.........
Gentle:.........
Pleasant:...........
Polite:.......
Stupid:.........
Trả lời (2)
11:28 26/07/2022
Practice 2: Rewrite the following sentences without changing the meanings of the original sentences
33) Did your father write that book?
✍️...................................................
34) Has he given the book back to you yet?
✍️...................................................
35) Did you buy this tractor last year ?
✍️................................................
36) Does someone often cook for you?
✍️...................,...............................
37) Do the Smiths do the washing every morning?
✍️..,............................................
38) Does living in a big city often annoy you?
✍️...,...........................................
39) Is the secretary typing letters for her boss?
✍️.........................................
40) Did someone buy your watch in duty free?
✍️........ . .......................
33) Did your father write that book?
✍️...................................................
34) Has he given the book back to you yet?
✍️...................................................
35) Did you buy this tractor last year ?
✍️................................................
36) Does someone often cook for you?
✍️...................,...............................
37) Do the Smiths do the washing every morning?
✍️..,............................................
38) Does living in a big city often annoy you?
✍️...,...........................................
39) Is the secretary typing letters for her boss?
✍️.........................................
40) Did someone buy your watch in duty free?
✍️........ . .......................
Trả lời (2)
10:47 21/07/2022
1) Does bad driving often cause many accidents?
-.............
Bị động với dạng câu nghi vấn nha mn
-.............
Bị động với dạng câu nghi vấn nha mn
Trả lời (2)
15:35 18/07/2022
Bài 2) Cho tam giác ABC vuông tại A, đường cao AH.Giải bài toán trong các trường hợp sau
a) AH=16, BH=25. Tính AB,AC,BC,CH
b) AB=12, BH=6. Tính AH,AB,BC,CH
Bài 3) Một tam giác vuông có cạnh huyền là 5 đường cao ứng vs cạnh huyền 2. Tính cạnh nhỏ nhất
a) AH=16, BH=25. Tính AB,AC,BC,CH
b) AB=12, BH=6. Tính AH,AB,BC,CH
Bài 3) Một tam giác vuông có cạnh huyền là 5 đường cao ứng vs cạnh huyền 2. Tính cạnh nhỏ nhất
Trả lời (3)
09:28 14/07/2022
Practice 16: Are the underlined parts of these sentences right or wrong? Correct them where necessary
6) Who has invented paper?
7) Where have you been born?
8) Ellie isn't at home. She's gone shopping
9) Al. Einstein has been the scientist who has developed the theory of relativity
10) I've lost my key. i can't find it anywhere
11) Have you eaten a lot of sweets when you were a child?
12) I've bought a new car. You must come and see it
13)I've bought a new car last week
14) Where have you been yesterday evening?
15) Lucy has left school in 1999
16) I'm looking for Mike.Have you seen him?
17)'Have you been to Paris?', ' Yes, many times '
18) I'm very hungry.I haven't eaten much today
6) Who has invented paper?
7) Where have you been born?
8) Ellie isn't at home. She's gone shopping
9) Al. Einstein has been the scientist who has developed the theory of relativity
10) I've lost my key. i can't find it anywhere
11) Have you eaten a lot of sweets when you were a child?
12) I've bought a new car. You must come and see it
13)I've bought a new car last week
14) Where have you been yesterday evening?
15) Lucy has left school in 1999
16) I'm looking for Mike.Have you seen him?
17)'Have you been to Paris?', ' Yes, many times '
18) I'm very hungry.I haven't eaten much today
Trả lời (2)
11:58 03/07/2022
Practice 19: Put the verb into the correct form,past perfect (I had done) or past simple (I did)
12) Alan (hardly/ prepare).......….for dinner when her husband (go).......home
13) Before I (watch)........TV,I (do).......my homework
14) After I ( wash).....my clothes,I (sleep)........
15) After she(finish)....... breakfast she left the house
16)Before he came to Warsaw he(live).....in Prague
17)He (spend)......... three years in Tahiti when he was a child
18) He told me he (never be).........to Australia before
19) He told me he (never see)....... anything like that
20) I (write)........a long letter to my mother yesterday
21) I couldn't get in because I (lose)......my keys
22) I felt really stupid because I (make) ......a lot of mistakes
23) I paid for the window because my son(break).............
24) I told him I didn't know who (steal) .......his pen
25) I was feeling very thirsty because I (drink) .......too much alcohol the night before
26) The doctor examined her leg and(find).......that she had broken it
27) When I saw her I knew we (never meet)....... before
12) Alan (hardly/ prepare).......….for dinner when her husband (go).......home
13) Before I (watch)........TV,I (do).......my homework
14) After I ( wash).....my clothes,I (sleep)........
15) After she(finish)....... breakfast she left the house
16)Before he came to Warsaw he(live).....in Prague
17)He (spend)......... three years in Tahiti when he was a child
18) He told me he (never be).........to Australia before
19) He told me he (never see)....... anything like that
20) I (write)........a long letter to my mother yesterday
21) I couldn't get in because I (lose)......my keys
22) I felt really stupid because I (make) ......a lot of mistakes
23) I paid for the window because my son(break).............
24) I told him I didn't know who (steal) .......his pen
25) I was feeling very thirsty because I (drink) .......too much alcohol the night before
26) The doctor examined her leg and(find).......that she had broken it
27) When I saw her I knew we (never meet)....... before
Trả lời (4)
10:35 03/07/2022
Practice 4: Are the underlined parts of these sentences right or wrong? Correct them where necessary
1)• Who has invented •paper?
2) Where •have you been born•?
3) Ellie isn't at home. •She's gone• shopping
4) Alo.Einstein• has been• the scientist who •has developed• the theory of relativity
5) •I've lost •my key.I can't find it anywhere
6) •Have you eaten• a lot of sweets when you were a child?
7)• I've bought• a new car. You must come and see it
8)• I've bought• a new car last week
9) Where •have you been •yesterday evening?
10) •Lucy has left• school in 1999
11)I'm looking for Mike. •Have you seen• him?
12) '•Have you been• to Paris ?' , ' Yes,many times '
13)I'm very hungry.•I haven't eaten •much today
14) Ben is a friend of mine.I •know •him very well
15) Ben is a friend of mine.I •know •him for a long time
1)• Who has invented •paper?
2) Where •have you been born•?
3) Ellie isn't at home. •She's gone• shopping
4) Alo.Einstein• has been• the scientist who •has developed• the theory of relativity
5) •I've lost •my key.I can't find it anywhere
6) •Have you eaten• a lot of sweets when you were a child?
7)• I've bought• a new car. You must come and see it
8)• I've bought• a new car last week
9) Where •have you been •yesterday evening?
10) •Lucy has left• school in 1999
11)I'm looking for Mike. •Have you seen• him?
12) '•Have you been• to Paris ?' , ' Yes,many times '
13)I'm very hungry.•I haven't eaten •much today
14) Ben is a friend of mine.I •know •him very well
15) Ben is a friend of mine.I •know •him for a long time
Trả lời (1)
09:55 02/07/2022
Practice 3: Put the verb into the correct form
1) I(go) to the bed at 10 am yesterday
2) why( you/translate) the text the whole morning?
3) (he/visit) him at 2 o'clock yesterday?
4) They (read) an interesting book when something fell on the floor
5) He (not/listen to) me carefully
6) why (she/cry) the whole day?
7) I (not/laugh at) your sister
8) (he/stand) alone when you met him?
9)we (help ) our mother the whole day
10) (it/snow) when you met us
11) we( not/study) at 2 o'clock
12) what ( you/think about) when I said your name?
13) we( hurry) when you met us
14) what ( tim/ listen to) when you took his phone away?
15) she (dance) with him the whole night
16) where he( live) when you saw him last?
17) she (stand )at the bus stop.I asked her what bus she ( wait)for
18) from the sounds it was clear that mary (practise) the piano
19) the children were frightened because it (get) dark
20) he usually wears sandals but when I last saw him he (wear) boots
21) the house was in great disorder because he(redecorate)it
22) the director didn't allow the actors to travel by air while they (work) on the film
23) the car had nobody in it but the engine(run)
24) my wife and I (talk) about you the other day
25) when I first met him he( study) painting
1) I(go) to the bed at 10 am yesterday
2) why( you/translate) the text the whole morning?
3) (he/visit) him at 2 o'clock yesterday?
4) They (read) an interesting book when something fell on the floor
5) He (not/listen to) me carefully
6) why (she/cry) the whole day?
7) I (not/laugh at) your sister
8) (he/stand) alone when you met him?
9)we (help ) our mother the whole day
10) (it/snow) when you met us
11) we( not/study) at 2 o'clock
12) what ( you/think about) when I said your name?
13) we( hurry) when you met us
14) what ( tim/ listen to) when you took his phone away?
15) she (dance) with him the whole night
16) where he( live) when you saw him last?
17) she (stand )at the bus stop.I asked her what bus she ( wait)for
18) from the sounds it was clear that mary (practise) the piano
19) the children were frightened because it (get) dark
20) he usually wears sandals but when I last saw him he (wear) boots
21) the house was in great disorder because he(redecorate)it
22) the director didn't allow the actors to travel by air while they (work) on the film
23) the car had nobody in it but the engine(run)
24) my wife and I (talk) about you the other day
25) when I first met him he( study) painting
Trả lời (1)
10:34 01/07/2022
Practice 2: Put the verbs in brackets into the present perfect tense
1) You (see) my what anywhere?–No,I'm afraid I....
2) Would you like some coffee? I just (make) some
3) How many bottles the milkman (leave)?–He(leave) six
4) How long you(know) Mr Pitt?–I (know) him for ten years
5)You (have) enough to eat?–Yes,I (have) plenty,Thank you
6) He (not/eat) an ice-cream since August
7) We (find) the way
8) How (he/spend) all of his money?
9) Jim and Jill (answer)the question right
10) Rachel ( not/talk to) him since Friday
11) (you/lose) your mind?
12) What (your mother/bake) for your birthday?
13) (he/ever/be) to Niagara Falls?
14) They (not/receive) any answer yet
15) Where (you/be) this year?
1) You (see) my what anywhere?–No,I'm afraid I....
2) Would you like some coffee? I just (make) some
3) How many bottles the milkman (leave)?–He(leave) six
4) How long you(know) Mr Pitt?–I (know) him for ten years
5)You (have) enough to eat?–Yes,I (have) plenty,Thank you
6) He (not/eat) an ice-cream since August
7) We (find) the way
8) How (he/spend) all of his money?
9) Jim and Jill (answer)the question right
10) Rachel ( not/talk to) him since Friday
11) (you/lose) your mind?
12) What (your mother/bake) for your birthday?
13) (he/ever/be) to Niagara Falls?
14) They (not/receive) any answer yet
15) Where (you/be) this year?
Trả lời (1)
09:51 01/07/2022
Practice 1: Put the verbs in brackets into the present perfect tense
1) The post (come)?–Yes,it.........
2) I (not finish) my letter yet
3) He just (go) out
4) The phone( stop) ringing
5) Someone (take) my bicycle
6) I just (wash) that floor
7) The cat ( steal) the fish
8) I (live) here for ten years
9) Where you( be)?– I (be) to the dentist
10) she (finish) the bird house today
11) We (not/translate) the whole text yet
12) ( you/ever/be) to Rome?
13) Where (you/be) lately?
14) (he/lock) the door
15) I (not/hear )from you for ages
16) Tom (already/graduate) from university
17) ( the children/ prepare for) the concert?
18) What ( Kate /eat) for breakfast today?
19) They (watch) an interesting program this week
20) You( hear) from her lately? –No,I..
21) You (explain) the practice? – Yes,I...
22) Charles (pass) his exam?–Yes,he...
22) Someone (wind) the clock ?–Yes,he..
1) The post (come)?–Yes,it.........
2) I (not finish) my letter yet
3) He just (go) out
4) The phone( stop) ringing
5) Someone (take) my bicycle
6) I just (wash) that floor
7) The cat ( steal) the fish
8) I (live) here for ten years
9) Where you( be)?– I (be) to the dentist
10) she (finish) the bird house today
11) We (not/translate) the whole text yet
12) ( you/ever/be) to Rome?
13) Where (you/be) lately?
14) (he/lock) the door
15) I (not/hear )from you for ages
16) Tom (already/graduate) from university
17) ( the children/ prepare for) the concert?
18) What ( Kate /eat) for breakfast today?
19) They (watch) an interesting program this week
20) You( hear) from her lately? –No,I..
21) You (explain) the practice? – Yes,I...
22) Charles (pass) his exam?–Yes,he...
22) Someone (wind) the clock ?–Yes,he..
Trả lời (1)
22:20 30/06/2022
Practice 1:Put the verb in brackets into the present perfect or the simple past tense
1) This is my house -How long you (live) here?- I (live) here since 1970
2) He (live) in London for two years and then (go)to Edinburgh
3) You (wear) your hair long when you were at school ?- Yes,my mother (insist)on it
4) But when I ( leave) school I (cut) my hair and (wear) it short ever since
5) My brother (write) several plays.He just (finish) his second tragedy
6) I (fly) over Loch ness last week - You (see)the Loch ness monster?
7) I (not see) him for three years. I wonder where he is
8) He (not smoke) for two weeks.He is trying to give it up
9) When he (arrive)?- He (arrive) at 2.00
10);You(lock) the door before you left the house?
11) I (read) his books when I was at school. I ( enjoy) them very much
12) I can't go out because I (not finish) my work
13) I never (drink) whisky.- Well,Have some now
14) I (write) the letter but I can't find a stamp
15) The clock is slow.- It isn't slow,it (stop)
16)I (leave) home at 8.00 and (get) here at twelve
17) I (do)this sort of work when I (be) an apprentice
18) You (have) breakfast yet?- Yes,I (have) it at 8.00
19) The concert (begin) at 2.3 0 and (last) for two hours. Everyone (enjoy)it very much
20) The newspaper (come)?- Yes,Ann is reading it
21) The actors (arrive) yesterday and (start) rehearsals early this morning
22) It (be) very cold this year.I wonder when it is going to get warmer
1) This is my house -How long you (live) here?- I (live) here since 1970
2) He (live) in London for two years and then (go)to Edinburgh
3) You (wear) your hair long when you were at school ?- Yes,my mother (insist)on it
4) But when I ( leave) school I (cut) my hair and (wear) it short ever since
5) My brother (write) several plays.He just (finish) his second tragedy
6) I (fly) over Loch ness last week - You (see)the Loch ness monster?
7) I (not see) him for three years. I wonder where he is
8) He (not smoke) for two weeks.He is trying to give it up
9) When he (arrive)?- He (arrive) at 2.00
10);You(lock) the door before you left the house?
11) I (read) his books when I was at school. I ( enjoy) them very much
12) I can't go out because I (not finish) my work
13) I never (drink) whisky.- Well,Have some now
14) I (write) the letter but I can't find a stamp
15) The clock is slow.- It isn't slow,it (stop)
16)I (leave) home at 8.00 and (get) here at twelve
17) I (do)this sort of work when I (be) an apprentice
18) You (have) breakfast yet?- Yes,I (have) it at 8.00
19) The concert (begin) at 2.3 0 and (last) for two hours. Everyone (enjoy)it very much
20) The newspaper (come)?- Yes,Ann is reading it
21) The actors (arrive) yesterday and (start) rehearsals early this morning
22) It (be) very cold this year.I wonder when it is going to get warmer
Trả lời (1)
10:56 30/06/2022
1: When I entered the room,everyone (dance)....
2:I first met her two years ago when we(study).....at Oxford University
3:He fell down when he (run)....towards the church
4:Mark was listening to music while his sister (read).....a book
5:While I (watch)......TV last night,a mouse ran across the floor
6: Who......(you/talk) to when I came?
7:We(prepare).....for going home when it began to rain
8:I(sit)......in the waiting room when I heard someone call me
9: I bought romano whenever I (go).....to Maximart
10:Michael(use to play).......water sports when he was younger
11: He(use to go)...... swimming when he was a child
12: Pasteur(live).....in the 19th century
13: When Mrs Brown arrived home after a hard day at work,her children (sleep)......
2:I first met her two years ago when we(study).....at Oxford University
3:He fell down when he (run)....towards the church
4:Mark was listening to music while his sister (read).....a book
5:While I (watch)......TV last night,a mouse ran across the floor
6: Who......(you/talk) to when I came?
7:We(prepare).....for going home when it began to rain
8:I(sit)......in the waiting room when I heard someone call me
9: I bought romano whenever I (go).....to Maximart
10:Michael(use to play).......water sports when he was younger
11: He(use to go)...... swimming when he was a child
12: Pasteur(live).....in the 19th century
13: When Mrs Brown arrived home after a hard day at work,her children (sleep)......
Trả lời (2)
16:24 21/06/2022
1:In the 19th century,it(take).....two or three months to cross North America by covered wagon
2:my parents first(meet).....each other at the Olympic games in 1982
3:When I was young,I (want).....to be a singer
4:I (give)......my son the money for that last week
5:Where......(you/be)at 9.00 last night,Mr Green?
6: We(have)......a party last Saturday.It was great-we invited lots of people
2:my parents first(meet).....each other at the Olympic games in 1982
3:When I was young,I (want).....to be a singer
4:I (give)......my son the money for that last week
5:Where......(you/be)at 9.00 last night,Mr Green?
6: We(have)......a party last Saturday.It was great-we invited lots of people
Trả lời (2)
16:07 21/06/2022
Câu1: Rewrite the following done sentences,be ginning as shown,so that the meaning stays the same
1) My father will repair you bicycle tomorrow
You bicycle.....................................
2)My I turn off the television?I
Would you mind if.....................
3) The man is talking to your mother.He is my uncle
The boy...................
1) My father will repair you bicycle tomorrow
You bicycle.....................................
2)My I turn off the television?I
Would you mind if.....................
3) The man is talking to your mother.He is my uncle
The boy...................
Trả lời (1)
00:14 10/05/2022