Trang cá nhân của nguyễn ngọc hân

nguyễn ngọc hân đã đăng một câu hỏi 18 tháng 9 2021 lúc 19:40

Bài 1. Viết công thức hóa học tạo bởi các thành phần tương ứng vào ô trống

Nguyên tố↓	O	OH	NO₃	SO₄	CO₃	Cl
Na
Fe(III)
K
Ca
Al
Fe(II)
Mg

Phân loại các công thức mới viết trong bảng trên(basic oxide , muối ,base)

Bài 2. Viết công thức hóa học tạo bởi các thành phần tương ứng vào ô trống

	Cl	Br	I	F	NO₃	SO₄	CO₃	PO₄	S(II)
H

Các công thức mới viết thuộc loại hợp chất nào?

Bài 3.

a/Viết 5 công thức hóa học acidic oxide(oxit axit-vn)

b/Viết 5 công thức hóa học basic oxide(oxit bazơ-vn)

c/Viết 5 công thức hóa học acid.

d/Viết 5 công thức hóa học base tan trong nước (kiềm)và . 5 công thức hóa học base không tan trong nước.

e/ Viết 10 công thức hóa học muối.

Bài 4. Hoàn thành các phương trình sau

1/ K₂O + H₂O ...

2/ ........... + .......... NaOH

3/ ........... + .......... Ca(OH)₂

4/ ........... + .......... Ba(OH)₂

5/ K + H₂O

6/ Na + H₂O

7/ Ca + H₂O

8/ Ba + H₂O

9/ CO₂ + H₂O

10/ SO₂ + H₂O

11/ CO₂ + H₂O

12/ SO₂ + H₂O

13/ HCl + Fe ...............+ .........

14/ HCl + Al ...............+ .........

15/ H₂SO₄ + Mg ...............+ .........

16/ H₂SO₄ + Zn ...............+ .........

17/ H₂SO₄ + Al ...............+ .........

18/ Ca + O₂ ............

19/ Al + O₂ ............

20/ Fe + O₂ ............

21/ P + O₂ ............

22/ CH₄ + O₂ ............+ .......

23/ H₂ + CuO ............+ .......

24/ HCl + Fe₂O₃ ............+ .......

25/ HCl + FeO ............+ .......

Bài 5. Hoàn thành chuỗi phản ứng sau

1/ H₂ H₂O H₂SO₄ FeSO₄

2/ H₂ H₂O H₂SO₄ Al₂(SO₄)₃

3/ Na Na₂O NaOH

4/ Ca CaO Ca(OH)₂

5/ Ba BaO Ba(OH)₂

nguyễn ngọc hân đã đăng một câu hỏi 1 tháng 9 2021 lúc 14:00

Exercise 1: Complete the sentences using the given words.

	seniority	generations	wealthy	marriage	competition
	violence	survive	funeral	access	bread winner
1.	All of the people attending the		.........................	are wearing black clothes.
2.	Parents should teach their children necessary skills to .........................				in dangerous
	situations.
3.	The gap between .........................		people and poor people is becoming wider.
4.	There are many .........................		living in an extended family.
5.	The candidates participating in the .........................			are all talented.
6.	She has become the .........................		of her family since her husband lost his job.
7.	Strangers can’t .........................		this area unless they are allowed by the manager.
8.	Parents shouldn’t let their children see any .........................				between them.
9.	His second	......................... was broken again because of his selfishness.
10.	She was recruited to do the job thanks to her .........................

Exercise 2: Choose the best answer.

1.	Mobile phones	and computers	are essential technological ...............	for young
	generation.
	A. facility	B. facilities	C. facilitator
2.	Poor children don’t have shoes to wear, so they have to go ...............
	A. sandals	B. foot	C. bare-footed

3.	The parents are helping their children build ...............				behind their house.
	A. event	B. occasion			C. igloos
4.	The stories about the family’s ancestors are ...............				on to next generations.
	A. pass	B. passed			C passing
5.	We can see many	............... with two loads of fruits on their shoulders in the streets
	in Hanoi.
	A. street vendors	B. electricians			C. doctors
6.	People can eat a lot of ...............		while watching TV.
	A. facility	B. loudspeaker			C. snacks
7.	Historical stories were ...............		out in the event.
	A. acted	B. played			C. role
8.	How can you keep balance in the ...............			?
	A. snacks	B. dogsled			C. bare-footed
9.	These products are on sale on special ...............				of the stores.
	A. loudspeaker	B. street vendor			C. occasions
10.	Husband should be the ...............		in the family.
	A. chef	B. bread maker			C. breadwinner

Exercise 3: Put the verbs in brackets in the correct form.

1. I wish he.......................... here now. (be)

2. She wishes you........................... better. (feel)

3. I wish that you........................... here yesterday. (be)

4. I wish he.......................... the work tonight. (finish)

5. We wish you........................... tomorrow. (come)

6. She wishes she........................... the window last night. (open)

7. I wish you.......................... earlier yesterday. (leave)

8. We wish they........................... with us last weekend. (come)

9. They wish he........................... with them the next day. (come)

10. They wish we......................... them some food yesterday. (give)

11. We wish you.......................... yesterday. (arrive)

12. I wish I......................... the answers. (not lose)

13. We wish you.......................... what to do last year. (know)

14. I wish that he.......................... us next year. (visit)

15. She wishes that she........................... at home now. (be)

16. I wish I......................... the news. (hear)

17. You wish that he.......................... you last week. (help)

18. I wish I......................... the subject more interesting. (find)

19. He always wishes he.......................... rich. (be)

20. The boy wishes that he.......................... the competition the next day. (win)

nguyễn ngọc hân đã đăng một câu hỏi 30 tháng 8 2021 lúc 9:56

nguyễn ngọc hân đã đăng một câu hỏi 19 tháng 8 2021 lúc 10:14

A. PHONETICS

I. Choose the words whose underlined part is pronounced differently from that of the others in each group

1. A. columnist B. frustrated C. study D. adulthood

2. A. helpline B. September C. embarrassed D. depressed

3. A. tense B. skill C. decision D. house-keeping

4. A. resemble B. adolescence C. independence D. destruction

5. A. delighted B. depressed C. embarrassed D. relative

6. A. drumhead B. illustration C. earplug D. drugstore

7. A. strip B. visual C. artistic D. remind

8. A. thread B. treat C. pleasure D. dead line

9. A. embroider B. preserve C. benefit D. effect

10. A. emotion B. shoulder C. cognitive D. cold

11. A. explore B. exotic C. destroy D. mentor

12. A. drumhead B. illustration C. earplug D. drugstore

13. A. strip B. mine C. line D. remind

14. A. thread B. treat C. pleasure D. deadline

15. A. embroider B. preserve C. benefit D. effect

16. A. treasure B. pleasure C. ensure D. measure

17. A. daughter B. author C. laundry D. sausage

18. A. dials B. calls C. says D. plays

19. A. education B. graduate C. individual D. confident

20. A. embarrassed B. awareness C. abandoned D. captain

21. A. concentration B. question C. attraction D. emotion

22. A. exist B. exchange C. extreme D. expect

23. A. recognize B. opinion C. adolescence D. conflict

24. A. urban B. craft C. organize D. Canada

25. A. artisan B. handicraft C. machine D. heritage

26. A. skill B. house-keeping C. tense D. decision

27. A. advice B. decision C. delighted D. helpline

28. A. study B. adulthood C. columnist D. frustrated

29. A. concentrate B. self-aware C. stressed D. tense

30. A. embarrassed B. depressed C. helpline D. empathise

II. Choose the word whose main stressed syllable is placed differently from that of the other in each group.

1. A. worried B. cognitive C. concentrate D. frustrated

2. A. wonderful B. emergency C. adulthood D. indicator

3. A. adolescence B. independence C. discipline D. metropolitan

4. A. worried B. relaxed C. resolved D. aware

5. A. relate B. contain C. boredom D. informed

6. A. independence B. embarrassed C. adolescence D. expectation

7. A. informed B. delighted C. frustrated D. self-ware

8. A. cognitive B. emotion C. self-care D. negative

9. A. earplug B. gossip C. headmistress D. discuss

10. A. disappoint B. medical C. confident D. badminton

11. A. attraction B. changeable C. framework D. problem

12. A. metropolitan B. polluted C. forbidden D. affordable

13. A. feature B. culture C. tradition D. statue

14. A. helpful B. delicious C. ancient D. local

15. A. historic B. exciting C. polluted D. frightening

nguyễn ngọc hân đã chọn một câu trả lời của Đào Thu Hiền là đúng 18 tháng 8 2021 lúc 17:09

nguyễn ngọc hân đã đăng một câu hỏi 18 tháng 8 2021 lúc 16:20

1. Has Phuc arrived yet? - No, but I’m sure he will ______ up soon.

2. My aunt never really _______over the death of her pet dog.

3. It’s not easy to ____up smoking. My uncle has tried to do it lots of times without success.

4. Sorry, I don’t mean to interrupt you. Please ____on and finish what you are saying.

5. I can’t ________out which road to get back home now.

6.I enjoyed living in London, but it didn’t really _____ up to my expectations.

7. I’m sorry I’m late, but the car________ down on the way here, so I had to phone for a taxi.

8. You were going too fast! I couldn’t _________ up with you.

9. Remember to ________ out how many people are coming to the party.

10. Don’t forget to________ part in that school activity.

live turn break get give keep come take find go

nguyễn ngọc hân đã đăng một câu hỏi 18 tháng 8 2021 lúc 16:17

C. WORD FORMS

Give the correct form of the word given to complete the sentence.

1. They were brought up to behave in a way in public.	(CIVILIZATION)
2. Many people limit their to the sun because their skin burns very easily.	(EXPOSE)
3. Helen was worried about her test, and she didn’t sleep well. She was very tired after a night.	(SLEEP)
4. The price of the book is 10 dollar, including and packing.	(POST)
5. How are you getting on with your course in French.	(CORRESPOND)
6. It is for beginning students to make mistakes in English.	(AVOID)
7. The _ of the trains and buses causes frustration and annoyance.	(FREQUENT)
8. This issue is very . Don’t discuss it outside the group.	(CONFIDENCE)
9. Do you know what the of the river is?	(DEEP)
10. He was born blind, but despite this he still managed to become one of the top pop singers of his generation.	(ABLE)
11. Nowadays young people want to leave home as soon as they reach .	(ADULT)
12. A good night’s sleep will improve your .	(CONCENTRATE)
13. Teens should learn to be when making a presentation.	(CONFIDENCE)
14. Going away to college has made me much more .	(DEPEND)
15. A lot of people eat too much when they’re .	(DEPRESS)
16. I have a bad habit of taking on more than I can handle.	(RESPONSIBLE)
17. Students have spoken of their growing with school administrators.	(FRUSTRATE)
18. Ann suffered from depression and a number of other ___problems.	(EMOTION)
19. Have you thought of talking to a marriage guidance ?	(COUNSEL)
20. Her networking and skills came in handy for a charity boxing event she hosted.	(ORGANIZE)

7. The _ of the trains and buses causes frustration and annoyance.	(FREQUENT)
8. This issue is very . Don’t discuss it outside the group.	(CONFIDENCE)
9. Do you know what the of the river is?	(DEEP)
10. He was born blind, but despite this he still managed to become one of the top pop singers of his generation.	(ABLE)
11. Nowadays young people want to leave home as soon as they reach .	(ADULT)
12. A good night’s sleep will improve your .	(CONCENTRATE)
13. Teens should learn to be when making a presentation.	(CONFIDENCE)
14. Going away to college has made me much more .	(DEPEND)
15. A lot of people eat too much when they’re .	(DEPRESS)
16. I have a bad habit of taking on more than I can handle.	(RESPONSIBLE)
17. Students have spoken of their growing with school administrators.	(FRUSTRATE)
18. Ann suffered from depression and a number of other ___problems.	(EMOTION)
19. Have you thought of talking to a marriage guidance ?	(COUNSEL)
20. Her networking and skills came in handy for a charity boxing event she hosted.	(ORGANIZE)

nguyễn ngọc hân đã đăng một câu hỏi 18 tháng 8 2021 lúc 16:13

C. MULTIPLE CHOICE

I. Choose the best answer to complete each of the following sentences

1. His neighbours sometimes wondered he did for a living.

A. why B. when C. where D. what

2. Could you please tell me ?

A. It is how far to the nearest bus stop B. how far is it to the nearest bus stop

C. how far to the nearest bus stop is it D. how far it is to the nearest bus stop

3. Marigold wondered Kevin and Ruth would be at the party.

A. that B. whether C. if D. B & C

4. He asked me “ ?”

A. How long you have studied English. B. How long had you studied English

C. How long you had study English D. How long you had studied English

5. While many teachers spend some class time teaching skills, students often need more social skills.

A. study B. studied C. study’s D. studies

6. I am not sure I can solve this problem.

A. how B. what C. who D. by whom

7. She asked me the seat or not.

A. if – had occupied C. whether – was occupied

C. if– has been occupied D. whether – occupied

8. By the age of 15, teenagers are better able to a more demanding curriculum.

A. solve B. operate C. handle D. deal

9. My parents asked me to find out it gave you so much trouble.

A. what B. which C. why D. where

10. The policeman asked us .

A. had any of us seen the accident happen

B. if had any of us seen the accident happen

C. whether any of us had seen the accident happen

D. that if any of us had seen the accident happen

11. Tom told us that sometimes he had difficulty his feelings.

A. expressing B. communicating C. sending D. talking

12. My teacher told me that I attend the math course for the higher level programme that I for.

A. can’t – apply B. couldn’t – apply

C. can’t – applied D. couldn’t – had applied

13. I asked him but he said nothing.

A. what the matter was B. what was the matter

C. the matter was what D. what’s the matter was

14. My closest friend is not very and she likes having a small friend group but I like talking with a lot of people and hanging out.

A. society B. sociable C. social D. socialist

15. Mi asked what information she that assignment.

A. needs to be done B. needed doing

C. need to do D. needed to do

16. James him up when the bus reached the square.

A. told me wake B. asked me to wake

C. said me to wake D. requested me waking

17. Ann was raised very on her parents, and she was that she wouldn’t live on her own afterwards.

A. dependent - worry B. dependent – worried

C. independent - worry D. independent - worried

18. Susan needs someone to show her how to her anxiety and depression.

A. empathise B. try C. succeed D. manage

19. I wonder we’ll catch the bus we’ll take a taxi.

A. if - and whether B. whether - or that

C. if - or that D. whether - or whether

20. The advice columnist said, “It sounds like the problem is not your appearance but the you see yourself.”

A. route B. distance C. way D. behavior

21. The passenger asked we landed.

A. what B. when C. if D. why

22. He asked me what .

A. time was it B. time is it C. time it was D. none is correct.

23. He told me to rest for a while.

“ for a while”, he said.

A. To rest B. Rest C. Do you rest D. Resting

24. He asked “Why did she take my pen?”

- He asked why .

A. she took his pen B. did she take his pen

C. she had taken his pen D. she has taken his pen

25. Taking good notes students to evaluate, organize and summarize information.

A. requests B. requires C. allows D. offers

26. Excuse me. Could you tell me ?

A. what time is it B. what is the time C. what time it is D. it is what time

27. I suffer from depression and anxiety, but I don’t know to get over my problems.

A. what B. how C. where D. which

28. As children move toward , they are less likely to ask for advice.

A. dependent B. dependence C. independent D. independence

29. We wonder from his office after that scandal

A. why did he not resign B. why he did not resign

C. why he not resign D. why didn’t he resign

30. Miss Hoa said that unsuccessful test takers didn’t know the questions came from.

A. when B. where C. what D. why

31. A great way to improve skills is to keep trying new things.

A. reason B. reasoned C. reasoning D. reasons’

32. Jeff wanted to know .

A. that why were his friends laughing B. why were his friends laughing

C. why his friends were laughing D. the reason why his friends laughing

33. I want to talk to my teacher about my problems, but I have no idea to start, or to talk to him.

A. what – where B. where – who C. why – whom D. where – how

34. Perhaps what you’re reading or hearing is boring, which makes it hard to on the book or the conversation.

A. concentrate B. rely C. depend D. notice

35. Mr. Hawk told me that he would give me his answer the day.

A. previous B. following C. before D. last

36. Mr. Tan told us that the kids who in tests often the others were lucky.

A. succeed – thought B. succeed – had thought

C. didn’t succeed – were thinking D. didn’t succeed – thought

37. Pressure children to get into top schools has reached a crisis point.

A. at B. under C. on D. with

38. She him whether he liked the steak she cooked.

A. asks B. wondered C. wanted to know D. asked

39. “What does she like?” he asked me.

A. He asked me what she likes B. He asked me what she liked.

C. He asked me what do I like. D. He asked me what did he like.

40. She said, “Don’t tease me, John.”

A. She said not to tease me to John. B. She said John not to tease me.

C. She told John not to tease her. D. She told John do not tease her.

41. Julia said that she ............... there at noon.

A. is going to be B. was going to be C. will be D. can be

42. He ............... that he was leaving that afternoon.

A. told me B. told to me C. said me D. says to me

43. She said to me that she ............... to me the Sunday before.

A. wrote B. has written C. was writing D. had written

44. I ............... him to sell that old motorbike.

A. said to B. suggested

C. advised D. recommended

45. My parents reminded me ............... the flowers.

A. remember to plant B. plant C. to plant D. planting

46. I asked Martha ............... to enter law school.

A. are you planning B. is she planning

C. was she planning D. if she was planning

47. Nam wanted to know what time ...............

A. does the movie begin B. did the movie begin

C. the movie begins D. the movie began

48. I wondered ___________ the right thing.

A. whether I was doing B. if I am doing

C. was I doing D. am I doing

49. The scientist said the earth _________ the sun.

A. goes round B. is going around

C. went around D. was going around

50. Peter said that if he ______ rich, he _________ a lot.

A. is – will travel B. were – would travel

C. had been – would have travelled D. was – will travel

nguyễn ngọc hân đã đăng một câu hỏi 18 tháng 8 2021 lúc 16:11

V. PRACTICE: Tra từ vựng khi làm bài (thầy hỏi từ nào cũng phải biết, ko ậm ờ)