꧁ღ༺Linh༻ღ꧂
Sắt đoàn
30
6
a) Chứng minh ∆ADB = ∆CBD
b) Gọi giao điểm của AC và BD là O. Chứng minh O là trung điểm của AC và BD
c) Kẻ DH ⊥ AB (H AB) và BK ⊥ CD (K CD), BH và CK cắt AC lần lượt tại E và F. Chứng minh DE // BF và DE = BF
d) Chứng minh K, O, H thẳng hàng.
Cho ΔABC cân tại A, trên BC lấy điểm D, trên tia đối của tia CB lấy điểm E sao cho BD = CE, các đường vuông góc với BC kẻ từ D và E cắt AB, AC lần lượt ở M và N.
a) CMR: DM = EN
b) Đường thẳng BC cắt MN tại trung điểm I của MN
c) Đường thẳng vuông góc với MN tại I luôn đi qua 1 điểm cố định khi D thay đổi trên BC.
6. They are not_________to take part in this program of the World Health Organization.
A. so old
B. old enough
C. enough old
D. as old
Vì sao ở đây chọn B
23,Everyone expects that the soap opera will end next year.
=>.It
Có giải thích
II. Change these statements into passive voice.
1. Your impolite tone surprises me.
→ ________________________________________________________________________
2. An unknown author wrote this book many years ago.
→ ________________________________________________________________________
3. James will be repairing his car at 8 a.m. today.
→ ________________________________________________________________________
4. They forced him to steal the money out of his dad’s room.
→ ________________________________________________________________________
5. I will present my ideas at the conference tonight.
→ ________________________________________________________________________
6. He had written three books before 2000.
→ ________________________________________________________________________
7. The Government is planning a new road near my house next year.
→ ________________________________________________________________________
8. Picasso was painting Guernica at that time.
→ ________________________________________________________________________
Ở chuột gen W (đi bình thường) > w (nhảy van). Người ta cho lai 2 cặp chuột, thống kê qua nhiều lứa đẻ thấy xuất hiện kết quả như sau: Cặp I: P: Bố nhảy van x Mẹ bình thường F1: 101 chuột bình thường: 102 nhảy van. Cặp II: P: Bố nhảy van x Mẹ bình thường F1: 9 lứa toàn bình thường : 1 lứa có con nhảy van.
a/ Giải thích và viết sơ đồ lai trong 2 trường hợp.
b/ Người ta có thể kiểm tra kết quả trên bằng cách nào?
III. Modal verbs: S + modal verb + V(bare inf.) 1
. It isn’t necessary for you to wake up early.
=> You don’t ___________________________________________________ 2
. You are not allowed to make noise here.
=>You mustn’t _________________________________________________
3. Don’t stay up late every night.
=> You shouldn’t _______________________________________________
4. It’s better for you to review what you have learned.
=> You should _________________________________________________ 5
. It’s necessary to revise new words regularly.
=>You should _________________________________________________
Part 5. Read the passage carefully and choose A, B, C or D to indicate the best answer to the questions.(1.0 point) Solar energy is a long lasting source of energy which can be used almost anywhere. To generate solar energy, we only need solar cells and the sun! Solar cells can easily be installed on house roofs, so no new space is needed and each user can quietly generate their own energy. Compared to other renewable sources, they also possess many advantages. Wind and water power rely on turbines which are noisy, expensive and easy to break down. Solar cells are totally silent and non-polluting. As they have no moving parts, they require little maintenance and have a long lifetime. However, solar energy also has some disadvantages. We can only generate solar energy during daytime because the system depends on sunlight. Besides, solar cells require large area to work effectively. The main disadvantage of solar energy is that it costs about twice as much as traditional sources such as coal, oil and gas. This is because solar cells are expensive. Scientists are hoping that the costs of solar cells will reduce as more and more people see the advantages of this environmentally friendly source of energy
40. What does the word advantages in line 13 mean?
A. very bad
B. resources
C. benefits
D. friendly
chứng minh ko có ba số tự nhiên liên tiếp nào mà tổng bình phương là 2013
16. People don’t use that road very often.
→ __________________________________________________________________
17. The waiters cleaned the room last night.
→ __________________________________________________________________
18. They drank beer for breakfast in England years ago.
→ __________________________________________________________________
19. She usually decorates her room at weekends.
→ __________________________________________________________________
20. They built this house in 2010.
→ __________________________________________________________________
21. We are singing many songs in our room.
→ __________________________________________________________________
22. This is the first time I have seen this lovely dog.
→ __________________________________________________________________
23. They have taken her to the hospital.
→ __________________________________________________________________
24. People will use solar and wind energy to create electricity in the near future.
→ __________________________________________________________________
25. They will be using biogas in many factories soon.
→ __________________________________________________________________
26. They are doing Maths exercises at the moment.
→ __________________________________________________________________
27. Daisy washed the dishes last night.
→ __________________________________________________________________
28. She has bought the watch at this shop recently.
→ __________________________________________________________________
29. We don’t allow smoking in the restaurants.
→ __________________________________________________________________
30. She often gives her sister sweets.
→ __________________________________________________________________
Chuyển sang câu bị động
40. We told him not to be late again. → __________________________________________________________________
41. Have you finished all the sentences above? → __________________________________________________________________
42. They will pass the exam easily because they have studied hard. → __________________________________________________________________
43. Mr. Obama is going to visit Vietnam next month. → __________________________________________________________________
44. Parents should give children a lot of love. → __________________________________________________________________
45. I have to finish my work now. → __________________________________________________________________
46. You must do your task right now. → __________________________________________________________________
47. They had finished doing their homework before they went to the movie theatre. → _________________________________________________________________
48. Mary was waiting for him at the school yard. → __________________________________________________________________
49. Anna and Jenny were cleaning the floor. → __________________________________________________________________
50. Before going shopping yesterday, David had cleaned the kitchen. → _________________________
chuyển sang câu bị động
31. Professor Smith will be teaching American history next semester.
→ __________________________________________________________________
32. Julia is going to look for a new house while she is in Poland.
→ __________________________________________________________________
33. The chef will be baking the new dish tomorrow morning.
→ __________________________________________________________________
34. Anna is preparing everything for the meeting.
→ __________________________________________________________________
35. Floods have destroyed all the town since 1990.
→ __________________________________________________________________
1.When a car pulledout front of her, jane did well not to __________ contol of her bike
a.miss b.lose c.fail d.drop
2.When you stay on a country for some time you get used to the people's _______________ of life.
a.habit b.custom c.way d.system
Chuyển sang câu bị động
I have already watched the play before =>
Anna and Peter are speaking English now=>
Her mother had done the homework before 10 a.m yesterday =>
Jim puts the vases on the table yesterday =>
Tom was playing video games when I came =>
put the verbs in continuous look! the me ( wear)....................................blue uniforms
they (wait)..................... for their dad to take them to school
James ( act)................in a play at the National theatre
Danny always ( play).............. his guitar in the afternoon.It's so noisy that
I can't sleep I (go).................to hospital again tonight
she ( not see)............................Tim tonight or ever again.
They broke up last week after this lesson, I ( se )........................................ a friend at McDonald's for a burger and chatting
(You/use).................... your motorbike tonight? I want to borrow it I can't see you to night,Jan.
I ( go).............to the theatre with mike
Lets'go to the supermarket and buy tha special shampoo for the dog. I ( give)..................him a bath tonight
what (you/wear)........................ tonight
IV. Complete the sentences with the words below. have into make voice up get excuse tell clue tongue
1. Why are you shouting at the top of your ………………………….? I’m standing right beside you.
2. He’s very nervous. He’s been asked to ………………………… a speech at his nephew’s wedding.
3. I didn’t ………………………… the point of what she was trying to say. Did you understand her?
4. There’s so much noise in the room that I can’t hear you. Please speak …………………………
5. I’ll leave my phone number on the notice board in case you need to ………………………… in touch with me.
6. Please don’t raise your voice to me. I don’t want to ………………………… an argument about this.
7. She’s only three years old; she may have a watch, but she can’t ………………………… the time yet.
8. I haven’t a ………………………… what the answer to your question is. Maybe Mark can help you.
9. I don’t believe he was ill yesterday. He’s just making an …………………………
10. The name of the shop is on the tip of my ………………………… but I can’t remember it now.
Find and correct the mistake in each of the following sentences
1. We have not work today.
2. Does your father cycles to work every morning?
3. They are travel to Ho Chi Minh City tonight.
4. Martha and Kevin are swimming twice a week.
5. John rarely leave the country.
6. Don’t make any noise! The baby sleeping.
7. Does Jane speaks English very fluently?
8. Is there some new hotels in your neighbourhood?
9. Do your sisters like playing chess? – Yes, my sisters do.
10. I have bake cookies twice a month.
