(115*as):a-115
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Khách
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6 tháng 4 2022
TL:
36. My brother is a fast runner
37.I read a lot of books about History and Geography because I'm interested in them.
38. Although "The Haunted Theatre" is frightening, children love it.
39. No student in Linda's class is more intelligent than her.
40. Mary is shorter than Daisy.
_HT_
TT
1
15 tháng 8 2021
1. My father (plant)……is planting……..some fruit trees in the garden now
2. What ......does.... your father (do) ……do……in the evening?
- He usually (watch)……watches……. TV but sometimes he (read)………reads…… book.
3. Hoa's brother (be) ……is…an engineer, but now he (not work) ………isn't working……….at the moment.
4. We (not go)…………don't go……… to the zoo very often.
5. Lan and Phong (be) …are….in the kitchen. They (cook)………are cooking…….. dinner.
6. What about (play) ………playing………soccer this afternoon?
7. My sister (be)…is…. in the garden. She (water)…………is watering……….. the flowers.
8. Be quiet! I ………am studying……...(study)
9. Look! The plane (fly)……is flying…… toward the airport. It (land)……………is going to land…………..
10. What.....do....you (feel)………feel……. now? - I (feel)………feel……… hot.
11. We'll go out when the rain (stop) ………stops…………
12. I (stay)……will stay…… here until he (answer)………answers……. me
13. Wait until I (watch) ………watch……you.
14. I (send)……was sending……. you some postcards as soon as I (arrive) ……arrived……..in London.
15. Listen! Birds (sing)…………are singing……….
16. She (not come)………won't come……… until you (be)………are….. ready.
17. Bears ()………….. honey.
18. What ....are.... you (do) ……doing……now? - We (play)………are playing…… soccer.
19. Mr. Thanh (teach)…………teaches…… me English.
20. Where ...is..... your mother (be)……………..?
- She (be)……is………. in the bathroom. May be, she (have)………is having……….. a bath.
21. My father (jog) ………jogs………every morning.
22. Look! The bus (come)………is coming……. It (stop)……………is going to stop………… here.
23. The birds (build)……..will build……. their nests when the spring (come) ………comes………..
24. We (visit)………………will visit………….. Huong pagoda next week.
25. She (have) ………is going to have…….a meeting tonight.
26. Mai (brush)………brushes…….. her teeth after meals.
27. He (have)…………have had……. a lot of friends soon.
28. They (live) ………are living……..with her grand mother in HN now.
29. She (be)…………will be……….. 12 on her next birthday.
30. Poor him! He (not have)……………isn't having……….. any money in his pockets.
30. Mr Thanh (be)......is...... a doctor. He (work) ……works…….in a hospital in the city center. Everyday he (catch)…………catches……… the bus to work.
31 What ...is..... your father (do)………doing………….. now?
- He (plant)…………is planting………. trees in the garden.
32. We (not go)…………won't go…….. camping next week. We (visit)……will visit……….. the museum.
33. Miss. Lien is a journalist. She (write)………writes………. for Lao Dong newspaper. She (not write)…………doesn't write………… for Nhan Dan newspaper.
34. I (join)…………joining……… your English club.
35. We often (play)…………play…… tennis in the afternoon.
36. Long (watch)………watches……….. TV an hour everyday Trang 2
37. He (take)…………is taking…………. part in the march on May Day at present.
38. My sister (listen) ……………listens………to music in her free time.
39. What ...does..... your mother often (do)………do………… in the evening?
- She often (play)…plays……. card but today she (make)………is making…….. cake in the kitchen.
40. Hoa's husband (be)……is……. an engineer, but he (not work) ….…isn't working………..at the moment.
41. Trang usually (look) ……looked……..out of the window while the teacher (teach) …was teaching……..
42. Where ( be)………is…. your father?
- He (be)……is…….. in the bathroom. He (brush)…………brushes……. his teeth.
43. Be careful! That bike (break) ………is going to break…………
44. Lan s (play)……playing……… games on computer.
45. He ia tall enough (play)……to play……… basketball.
46. When I ( be )………was…. a child, I used to (study)………study…… hard
47. I (live)……have lived………. here since last week
48. They (know) …………have known…….each other for 2 years
49. My sister love (read)………reading…….. in her free time.
50. My sister is old enough (drive)………to drive………… a car.
15 tháng 8 2021
1. My father (plant) is planting some fruit trees in the garden now
2. What your father (do) do in the evening?
- He usually (watch) watches TV but sometimes he (read) reads book.
3. Hoa's brother (be) is an engineer, but now he (not work) doesn't work at the moment.
4. We (not go) don't go to the zoo very often.
5. Lan and Phong (be) are in the kitchen. They (cook) cook dinner.
6. What about (play) playing soccer this afternoon?
7. My sister (be) is in the garden. She (water) watered the flowers.
8. Be quiet! I study (study)
9. Look! The plane (fly) flies toward the airport. It (land) landed
10. What you (feel) feeling now? - I (feel) feel hot.
11. We'll go out when the rain (stop) stops
12. I (stay) stay here until he (answer) answers me
13. Wait until I (watch) watch you.
14. I (send) send you some postcards as soon as I (arrive) arrived in London.
15. Listen! Birds (sing) singing
16. She (not come) doesn't come until you (be) are ready.
17. Bears () loves honey.
18. What you (do) doing now? - We (play) are playing soccer.
19. Mr. Thanh (teach) teaches me English.
20. Where your mother (be) is ?
- She (be) is in the bathroom. May be, she (have) has a bath.
21. My father (jog) jogs every morning.
22. Look! The bus (come) is coming It (stop) stop here.
23. The birds (build) build their nests when the spring (come) comes
24. We (visit) will visit Huong pagoda next week.
25. She (have) has a meeting tonight.
HA
2
29 tháng 4 2018
\(A=\frac{115^{17}+2}{115^{17}-1}=\frac{115^{17}}{115^{17}-\left(2+1\right)}=\frac{115^{17}}{115^{17}-3}\)
\(\Rightarrow A=B\)
CD
29 tháng 4 2018
Ta có :
A = \(\frac{115^{17}+2}{115^{17}-1}\)= \(\frac{115^{17}-1+3}{115^{17}-1}\)= 1 + \(\frac{3}{115^{17}-1}\)
B = \(\frac{115^{17}}{115^{17}-3}\)= \(\frac{115^{17}-3+3}{115^{17}-3}\)= 1 + \(\frac{3}{115^{17}-3}\)
Vì 11517 - 1 > 11517 - 3 nên \(\frac{3}{115^{17}-3}\) < \(\frac{3}{115^{17}-1}\)
Vậy :1 + \(\frac{3}{115^{17}-1}\) < 1 + \(\frac{3}{115^{17}-3}\) hay A < B
PT
4
26 tháng 4 2016
Đặt 115^17 là a.
Ta có A=(a+2)/(a-1) và B=a/(a-3)
<=> A=((a-3)(a+2)/(a-3)(a-1) và B=a(a-1)/(a-1)(a-3)
So sánh A và B tức là đi so sánh P=(a-3)(a+2) với Q=a(a-1)
Có P=a^2-a-6 và Q=a^2-a
Vì P<Q => A<B
26 tháng 4 2016
Mình nhầm
Vì A>1;B<1 =>A>B
Cách kia sai dấu đoạn cuối.
4 tháng 10 2021
115.8=920
a)(-115).8=-920 (vì âm + dương =âm)
b)115.(-8)=-920 (vì dương + âm =âm)
c)(-115).(-8)=920 ( vì âm +âm =dương)
LT
2 tháng 5 2017
nA = \(\dfrac{11,2}{22,4}\) = 0,5 mol
d \(\dfrac{A}{kk}\) = \(\dfrac{MA}{29}\) = 0,552 \(\Rightarrow\) MA = 29 . 0,552 = 16 (g/mol)
- nC = \(\dfrac{75.16}{100.12}\) = 1 mol
- nH = \(\dfrac{25.16}{100.1}\) = 4 mol
A là CH4
PT : CH4 + O2 -> CO2 + 2H2O
nO2 = 2nCH4 = 2.0,5 = 1 mol
VO2 = 1. 22,4 = 22,4 l
10 tháng 4 2017
Khối lượng mol khí A tham gia phản ứng là:
dA/kk = 0,552 => MA = 29 . 0,552 = 16 g
mC = = 12; mH =
= 4
Đặt công thức hóa học của khí A là CxHy, ta có:
12 . x = 12 => x = 1
1 . y = 4 => y = 4
Công thức hóa học của khí A là CH4
Phương trình phản ứng
CH4 + 2O2 → CO2 + 2H2O
Theo phương trình phản ứng, thể tích oxi bằng hai lần thể tích khí CH4 nên thể tích khí oxi đủ để đốt cháy hết 11,2 lít khí A là:
= 2 .
= 11,2 . 2 = 22,4 lít