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11 tháng 1 2018

a) -57.11 = -57.(10 + 1) = -570 -57 = -627
b) 75.(-21) = 75.(-20 -1 ) = -1500 -75 = -1575

11 tháng 1 2018

Please clarify in detail!!!!!

27 tháng 3 2021

Bạn có thể giải thích rõ đề bài được không ?

27 tháng 3 2021

\(a.\left(-57\right)\cdot11=\left(-57\right)\cdot\left(10+1\right)=\left(-57\right)\cdot10+\left(-57\right)=-570-57=-627\)

\(b.75\cdot\left(-21\right)=75\cdot\left(-10\cdot2-1\right)=75\cdot\left(-10\cdot2\right)-75=-1500-75=-1575\)

8 tháng 4 2020

D

20 tháng 7 2019

Viet Nam is a diverse country with 54 different ethnic groups, so Vietnamese have very rich cultures and characteristics, especially women. However, there are some common features.

Firstly, Vietnamese women are very hard-working. They live in a developing country, so they have to work hard to make ends meet. They play various roles in society: nurses, mothers, wives and workers. after work, they have to do housework, take care of their children. No matter how hard their lives are, they always do their work well.

Besides, they are extremely skillful. A Vietnamese wife always takes good care of the house and keeps it clean, she cooks daily meals, prepare everything carefully. She runs all errands at home. She nurtures and teaches her children diligently.

Last but not least, they are very devoted to their families. They are willing to sacrifice to her families. They have to consider about family’s matters of every member and help them to deal with difficulties. They almost spend all of their time thinking for the happiness and pleasure of their families. In short, Vietnamese women have a lot of silver characteristics. We should consider them as good examples to master many useful skills of life as well as conquer ourselves. Minh tu viet do, ban tham khao nhak
19 tháng 7 2019

Today, it is normal for women to assert themselves by social work. They have proven that they can also make money, secure their own lives and take care of their husbands and children. For mothers who only stay at home to care for children, of course, the economy will not be guaranteed, even if the husband has a job and a stable salary.

In fact, there are many cases of conflicting couples only for money reasons. When a wife makes money with a reasonable amount of working time, it will obviously limit financial conflicts.

Have the opportunity to confirm the expertise

Today, not only men have a career, women also have their own dreams and need to improve their professional and professional skills. For them, pursuing social goals is as important as being a wife and being a mother.

When staying at home all day, busy with unnamed jobs, less likely to interact with people of the same level, or more knowledgeable, unknowingly, mothers will feel helpless and bored. Sometimes, loneliness makes them uncomfortable and unhappy with themselves. Often, mothers who have a professional career and have more friends of the same interest find life more meaningful, especially when they know the balance between the female role of the family and the society.

Moreover, working mothers also have the opportunity to learn more experiences, can bring the knowledge applied to family life and parenting.

Encourage equal division of labor in the family

When the mother goes to work, of course, all jobs in the family need to be shared fairly. Dad can forget the TV or newspapers to hand over vegetables and dinner. Baby can take care of watering plants. Thus, it is not unusual for anyone to feel that their son is washing dishes.

At this point, the mothers at home are much more disadvantaged because for reasons of staying at home all day, there is probably no need to help. It is this thought that creates the habit of dependence and that is the barrier, not only between spouses but also between parents and children.

Another advantage is that when boys grow up, they will look at their father's example to follow without thinking that the female should only worry about housework. Girls will follow the example of their mother, growing up with confidence that women can both have happy families and keep their jobs and positions in society.

6. “What are you doing now?” the teacher asked Tom. * A. The teacher asked Tom what he was doing now. B. The teacher asked Tom what was he doing then. C. The teacher asked Tom what he was doing then. D. The teacher asked Tom what was he doing now. 7. “Do you know Long’s address?” he asked me. * A. He asked me for Long’s address. ...
Đọc tiếp
6. “What are you doing now?” the teacher asked Tom. * A. The teacher asked Tom what he was doing now. B. The teacher asked Tom what was he doing then. C. The teacher asked Tom what he was doing then. D. The teacher asked Tom what was he doing now. 7. “Do you know Long’s address?” he asked me. * A. He asked me for Long’s address. B. He asked me if someone knew Long’s address. C. He asked me if I know Long’s address. D. He asked me if I knew Long’s address. 8. “Please stay home when the pandemic is everywhere,” the teacher said to us. * A. The teacher said us to stay home when the pandemic was everywhere. B. The teacher asked us stay home when the pandemic was everywhere. C. The teacher asked us to stay home when the pandemic was everywhere. D. The teacher asked us when the pandemic was everywhere and we had to stay home. 9. “I’ll tell you about this tomorrow, Mary,” said Tom. * A. Tom said to Mary that he will tell her about that the next day. B. Tom told Mary that I would tell you about that the next day. C. Tom told Mary that he would tell her about that the next day. D. Tom said Mary that he would tell her about that the next day. 10. “Please don’t post false information on the Internet,” Kerry said to Susan. * A. Kerry asked Susan to post false information on the Internet. B. Kerry asked Susan not to post false information on the Internet. C. Kerry asked Susan didn’t post false information on the Internet. D. Kerry asked Susan if she didn’t post false information on the Internet.
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We will be travelling to Australia _____________ the end of the month.A. in B. at C. on D. of22. Robots can _____________ lots of benefits to owners in the future.A. buy B. buys C. bring D. brings23. Will you _____________ on the Internet if you have a computer?A. be learning B. learn C. learns D. learned24. My father said that he would travel to Japan the _____________ day.A. future B. next C. followings D. following25. Lucy always _____________ to become a good student, so her parents are...
Đọc tiếp

We will be travelling to Australia _____________ the end of the month.

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

22. Robots can _____________ lots of benefits to owners in the future.

A. buy B. buys C. bring D. brings

23. Will you _____________ on the Internet if you have a computer?

A. be learning B. learn C. learns D. learned

24. My father said that he would travel to Japan the _____________ day.

A. future B. next C. followings D. following

25. Lucy always _____________ to become a good student, so her parents are very happy.

A. deny B. denies C. try D. tries

26. Some people said that the alien's eyes_____________ green and had a big head.

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

27. Learning_____________ the Internet is a useful way to save time.

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

28. Will she _____________ taking part in The Voice at this time tomorrow.

A. is B. was C. be D. are

29. My students might _____________ it difficult to complete their homework

A. finds B. found C. find D. finding

30. What _____________ are scientists interested in?

A. scopes B. areas C. types D. fields

31. The scientists believe that there might be some planets to _____________ human life.

A. provide B. accommodate C. replace D. support

32. Mercury _____________ after the Roman God Mercury.

A. named B. called C. is named D. is called

33. The prerequisite condition for a _____________planet is water supplies, appropriate temperatures and breathable air.

A. habitable B. inhabitable C. habitant D. inhabitant

34. _____________I have a look at the photos of outer space in your computer?

A. Might B. Could C. Shall D. May

35. Mercury is very close to the sun, and it is very hot. Therefore, there _____________ not be life on it.

A. might B. could C. can D. will

36. My friend asked me _____________I had ever seen any unidentified flying object.

A. if B. whether C. where D. both A & B

37. She wondered _____________a space buggy looked like.

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

38. I am not sure _____________ food tablets might supply enough energy for astronauts or not.

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

39. The teacher asked us what the essential conditions for human life _____________

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

40. The little boys wondered if he would meet an alien in his dream _____________ A. tonight B. this night C. that night D. that day’s night

41. People are using a lot of plastic bags everyday; ………………., the amount of waste has kept increasing.

A. however B. therefore C. so D. although

42. Scotland is very famous ……………, its rich culture as well as unique natural beauty.

A. for B. about C. because D. in

43. People consume a lot of contaminated food. It ……………….many health problems.

A. leads in B. leads to C. results to D. results from

44. If more people ………………. public transport, it reduce traffic jam and air pollution.

A. use-will B. used -will C. used-would D. use-would

45. You shouldn’t fiddle your ………………., when you speak to someone.

A. head B. nose C. hair D. shoulder

46. California ………………., the most iconic theme park in the world.

A. had B. has had C. have D. has

47. The ash of volcanic eruption ………………., be good for growing plants.

A. will B. may C. might D. both B & C

48. Most European citizen ………………., to apply for a visa to visit Canada.

A. doesn’t have B. don’t have C. didn’t have D. hadn’t have

49. Dave fancy ………………., non-fiction movies with his friends.

A. to watch B. watching C. be watched D. being watched

50. The teacher told me not hesitate ………………., her if I had some questions.

A. asking B. to ask C. being asked D. to be asked

 

Chỉ chi tiết cho e với ạ

1
14 tháng 4 2022

21. B

22. C

23. B

24. D

25. C

26. A

27. D

28. C

29. C

30. D

31. B

32. C

33. A

34. B

35. A

36. D

37. A

38. D

39. D

40. C

41. B

42. A

43. B

44. A

45. C

46. D

47. D

48. B

49. B

50. B

Mk cũng ko chắc là có đúng hết ko nên bạn xem qua rồi ktra nghĩa của câu nha!

Hãy bắt đầu bằng một bài "nhẹ nhàng, tình cảm" Đọc kỹ đoạn văn sau và chọn phương án đúng (ứng với A hoặc B, C, D) cho mỗi câu từ 1 đến 5. For many people the language of the Internet is English. “World, Wide, Web: Three English Words” was the name of an article by Michael Specter in the New York Times a few years ago. The article went on to say: “If you want to take full advantage of the Internet, there is only one real way to do it: learn...
Đọc tiếp

Hãy bắt đầu bằng một bài "nhẹ nhàng, tình cảm"

Đọc kỹ đoạn văn sau và chọn phương án đúng (ứng với A hoặc B, C, D) cho mỗi câu từ 1 đến 5.

For many people the language of the Internet is English. “World, Wide, Web: Three English Words” was the name of an article by Michael Specter in the New York Times a few years ago. The article went on to say: “If you want to take full advantage of the Internet, there is only one real way to do it: learn English.”

In general, it is not difficult to learn to use Internet services. But although Internet services are rather easy to use, you will have considerable difficulties if you are not familiar with English. In fact, a good knowledge of English is one of the most important aspects that help you use the Internet.

Learning to use a new Internet service may take a few hours, a few days or some weeks, but it takes years to learn a language so that you can use it fluently and confidently. Of course, when you know some English, you can learn more just by using it on the Internet. But at least your English should be good enough to understand commonly used words and to know what to do on the Internet.

1.this passage talks about

A. using in the Internet B. the role of english on the internet

C. learning English D. services of the internet

2. the opposite of the word advantage in the passage is

A. unadvantage B. inalvantage C. disadvantage D. imadvantage

3. The word it the passage refers to

A. english B. the internet C. the servise D. a ;language

4. Which of the following is not true

A. internet is servise widely B. english is very necessay on the internet

C. We learn English by using the internet D. Using a language fluetly will not take you seceral years

5. the word commonly in the passage is colsest in meaning to

A. widely B. successfully C. necessarily D.normally

MN ƠI GIÚP MIK VS MAI MIK NỘP BÀI RỒI!!

AI NHANH VÀ ĐÚNG MIK TICK NHA!!

2
10 tháng 8 2018

1.this passage talks about

A. using in the Internet B. the role of english on the internet

C. learning English D. services of the internet

2. the opposite of the word advantage in the passage is

A. unadvantage B. inalvantage C. disadvantage D. imadvantage

3. The word it the passage refers to

A. english B. the internet C. the servise D. a ;language

4. Which of the following is not true

A. internet is servise widely B. english is very necessay on the internet

C. We learn English by using the internet D. Using a language fluetly will not take you seceral years

5. the word commonly in the passage is colsest in meaning to

A. widely B. successfully C. necessarily D.normally

Đăng muộn thế bạn ơihihi

10 tháng 8 2018

mn làm nhanh giúp mik nhé!!

tên giống mk:))

21 tháng 1 2022

nhiều người tên Hà An mà

nhưng ko giống họ thôi

21: New _______ about the COVID-19 will be updated on the Internet every minute.A. inform                               B. information                       C. informed               D. informative22: If our teacher_______ here now, he would help s with this difficult exercise.A. were                                  B. would be                           C. is                            D. has been23: I have been in this club since I _______ in this school.A. learn...
Đọc tiếp

21: New _______ about the COVID-19 will be updated on the Internet every minute.

A. inform                               B. information                       C. informed               D. informative

22: If our teacher_______ here now, he would help s with this difficult exercise.

A. were                                  B. would be                           C. is                            D. has been

23: I have been in this club since I _______ in this school.

A. learn                                  B. have learned                     C. learned                  D. have been learning

24: Canned food is not as healthy as fresh food, _______?

A. is it                                     B. isn’t it                                 C. doesn’t it               D. does it

25: We don’t allow you _______ in our house.

A. to smoke                           B. smoke                                C. smoked                 D. smoking

26: The examination will be held ________ June.

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

27: Ann: "Shall we eat out tonight?" - Kate:"______"

A. It is very kind of you.                                                     B. You are very welcome.

C. That’s a great idea.                                                          D. That sounds like fun.

28: It’s cold outside. ________ your coat.

A. Put down                          B. Put off                                C. Put on                    D. Put into

29: Nobody knows what the________ of the explosion was.

A. reaction                             B. reason                                C. cause                     D. source

30: Try to ________ the meaning of words rather than going straight for your dictionary.

A. expect                                B. think                                  C. guess                     D. look

31. Do all the students get used ___________ their summer vacation in the countryside?

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

32. Her parents were________ happy that she won the first prize.

A. extremes                           B. extremely                          C.  extremeness        D. extreme

33. If I were you, I ________ much harder.

A. should work                    B. worked                              C. could work           D. must work

34. The washing machine was expensive, ___________ , they couldn’t afford to buy it.

A. however                            B. because                             C. but                                     D. therefore

35. Smoke, dirt and noise are kinds of pollutants ________ cause health problems.

A. which                                B. who                                    C. whose                    D. that

36. She didn’t hear the dog barking outside because she________ headphones.

A. is wearing                         B. wears                                 C. was wearing         D. wore

37. Khanh Hoa Province often experience temperatures ________ 29C and 36C in the summer.

A. in                                        B. between                             C. for                          D. of

38. I remember ________ to the zoo by my father when I was a child.

A. to take                               B. taking                                C. being taken           D. to be taken

39. Life in a small town is ________ than that in a big city.

A. little peaceful                   B. much more peaceful       C. peaceful                D. much peaceful

40. “You have read that article on the website, haven’t you?”._ - Helen:” ___________”

A. Not yet. Why?                                                                 B. Sure thanks

C. Yes, of course. I will                                                       D. Not at all. Go ahead.

1
15 tháng 6 2021

21: New _______ about the COVID-19 will be updated on the Internet every minute.

A. inform                               B. information                       C. informed               D. informative

22: If our teacher_______ here now, he would help s with this difficult exercise.

A. were                                  B. would be                           C. is                            D. has been

23: I have been in this club since I _______ in this school.

A. learn                                  B. have learned                     C. learned                  D. have been learning

24: Canned food is not as healthy as fresh food, _______?

A. is it                                     B. isn’t it                                 C. doesn’t it               D. does it

25: We don’t allow you _______ in our house.

A. to smoke                           B. smoke                                C. smoked                 D. smoking

26: The examination will be held ________ June.

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

27: Ann: "Shall we eat out tonight?" - Kate:"______"

A. It is very kind of you.                                                     B. You are very welcome.

C. That’s a great idea.                                                          D. That sounds like fun.

28: It’s cold outside. ________ your coat.

A. Put down                          B. Put off                                C. Put on                    D. Put into

29: Nobody knows what the________ of the explosion was.

A. reaction                             B. reason                                C. cause                     D. source

30: Try to ________ the meaning of words rather than going straight for your dictionary.

A. expect                                B. think                                  C. guess                     D. look

31. Do all the students get used ___________ their summer vacation in the countryside?

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

32. Her parents were________ happy that she won the first prize.

A. extremes                           B. extremely                          C.  extremeness        D. extreme

33. If I were you, I ________ much harder.

A. should work                    B. worked                              C. could work           D. must work

34. The washing machine was expensive, ___________ , they couldn’t afford to buy it.

A. however                            B. because                             C. but                                     D. therefore

35. Smoke, dirt and noise are kinds of pollutants ________ cause health problems.

A. which                                B. who                                    C. whose                    D. that

36. She didn’t hear the dog barking outside because she________ headphones.

A. is wearing                         B. wears                                 C. was wearing         D. wore

37. Khanh Hoa Province often experience temperatures ________ 29C and 36C in the summer.

A. in                                        B. between                             C. for                          D. of

38. I remember ________ to the zoo by my father when I was a child.

A. to take                               B. taking                                C. being taken           D. to be taken

39. Life in a small town is ________ than that in a big city.

A. little peaceful                   B. much more peaceful       C. peaceful                D. much peaceful

40. “You have read that article on the website, haven’t you?”._ - Helen:” ___________”

A. Not yet. Why?                                                                 B. Sure thanks

C. Yes, of course. I will                                                       D. Not at all. Go ahead.

1. We don’t have enough money, so we can’t buy that house. A. If we had enough money, we could buy that house. B. We could buy that house if we have enough money. C. If we had had enough money, we could buy that house. D. We could have bought that house if we had had enough money. 2.Water these plant or they will die A.Unless you water these plants ,they will die B.Unless you watered these plants ,they will die C. Unless you water these plants ,they won’t die D. If you water these plants...
Đọc tiếp

1. We don’t have enough money, so we can’t buy that house.

A. If we had enough money, we could buy that house. B. We could buy that house if we have enough money.

C. If we had had enough money, we could buy that house. D. We could have bought that house if we had had enough money.

2.Water these plant or they will die

A.Unless you water these plants ,they will die B.Unless you watered these plants ,they will die

C. Unless you water these plants ,they won’t die D. If you water these plants ,they will die

3. Hurry up or we’ll be late for the correct

A. If we don’t hurry , we won’t be late for the concert B.If we didn’t hurry , we will be late for the concert

C. If we don’t hurry, we will be late for the concert D.Unless we don’t hurry, we will be late for the concert

4..I can’t do this test because it is very difficult

A.If this test were difficult,I could do it B. If this test weren’t difficult ,I could do it

C.If this test weren’t difficult,I couldn’t do it D.Unless this test were difficult, I couldn’t do it

5. Study harder or you won’t pass the exam.

A. Only if you study harder, you will fail the exam. B. Unless you study harder, you will pass the exam.

C. If you don’t study harder, you will fail the exam.D. If you don’t pass the exam, you will have to study harder.

6. Take action soon or the pollution will get much worse.

A. If you don’t take action soon, the pollution will get much worse.

B. Unless you don’t take action soon, the pollution will get much worse.

C. The pollution will get much worse if you didn’t take action soon.

D. Only if you take action soon, the pollution will get much worse.

7. The fire will go out if we don’t put more wood on.

A. If we don’t put more wood on, the fire won’t go out. B. Unless we put more wood on, the fire will go out.

C. The fire will go out, so we don’t put more wood on. D. Unless we put more wood on, the fire won’t go out.

8. They spent a lot of money on food and clothes.

A. A lot of money was spent on food and clothes. B. A lot of money were spent on food and clothes.

C. A lot of money on food and clothes were spent. D. A lot of money on food and clothes was spent.

9. People have used the Internet all over the world.

A. The Internet has used all over the world. B. The Internet was used all over the world.

C. The Internet has been used all over the world. D. The Internet has been using all over the world.

10. Our house is going to be rebuilt by a local firm.

A. We are going to rebuild our house. B. We are going to have our house to rebuild.

C. A local firm are going to rebuild our house. D. A local firm is going to rebuild our house.

2
2 tháng 3 2020

1. We don’t have enough money, so we can’t buy that house.

A. If we had enough money, we could buy that house. B. We could buy that house if we have enough money.

C. If we had had enough money, we could buy that house. D. We could have bought that house if we had had enough money.

2.Water these plant or they will die

A.Unless you water these plants ,they will die B.Unless you watered these plants ,they will die

C. Unless you water these plants ,they won’t die D. If you water these plants ,they will die

3. Hurry up or we’ll be late for the correct

A. If we don’t hurry , we won’t be late for the concert B.If we didn’t hurry , we will be late for the concert

C. If we don’t hurry, we will be late for the concert D.Unless we don’t hurry, we will be late for the concert

4..I can’t do this test because it is very difficult

A.If this test were difficult,I could do it B. If this test weren’t difficult ,I could do it

C.If this test weren’t difficult,I couldn’t do it D.Unless this test were difficult, I couldn’t do it

5. Study harder or you won’t pass the exam.

A. Only if you study harder, you will fail the exam. B. Unless you study harder, you will pass the exam.

C. If you don’t study harder, you will fail the exam.D. If you don’t pass the exam, you will have to study harder.

6. Take action soon or the pollution will get much worse.

A. If you don’t take action soon, the pollution will get much worse.

B. Unless you don’t take action soon, the pollution will get much worse.

C. The pollution will get much worse if you didn’t take action soon.

D. Only if you take action soon, the pollution will get much worse.

7. The fire will go out if we don’t put more wood on.

A. If we don’t put more wood on, the fire won’t go out. B. Unless we put more wood on, the fire will go out.

C. The fire will go out, so we don’t put more wood on. D. Unless we put more wood on, the fire won’t go out.

8. They spent a lot of money on food and clothes.

A. A lot of money was spent on food and clothes. B. A lot of money were spent on food and clothes.

C. A lot of money on food and clothes were spent. D. A lot of money on food and clothes was spent.

9. People have used the Internet all over the world.

A. The Internet has used all over the world. B. The Internet was used all over the world.

C. The Internet has been used all over the world. D. The Internet has been using all over the world.

10. Our house is going to be rebuilt by a local firm.

A. We are going to rebuild our house. B. We are going to have our house to rebuild.

C. A local firm are going to rebuild our house. D. A local firm is going to rebuild our house.

2 tháng 3 2020

1. We don’t have enough money, so we can’t buy that house.

A. If we had enough money, we could buy that house. B. We could buy that house if we have enough money.

C. If we had had enough money, we could buy that house. D. We could have bought that house if we had had enough money.

2.Water these plant or they will die

A.Unless you water these plants ,they will die B.Unless you watered these plants ,they will die

C. Unless you water these plants ,they won’t die D. If you water these plants ,they will die

3. Hurry up or we’ll be late for the correct

A. If we don’t hurry , we won’t be late for the concert B.If we didn’t hurry , we will be late for the concert

C. If we don’t hurry, we will be late for the concert D.Unless we don’t hurry, we will be late for the concert

4..I can’t do this test because it is very difficult

A.If this test were difficult,I could do it B. If this test weren’t difficult ,I could do it

C.If this test weren’t difficult,I couldn’t do it D.Unless this test were difficult, I couldn’t do it

5. Study harder or you won’t pass the exam.

A. Only if you study harder, you will fail the exam. B. Unless you study harder, you will pass the exam.

C. If you don’t study harder, you will fail the exam.D. If you don’t pass the exam, you will have to study harder.

6. Take action soon or the pollution will get much worse.

A. If you don’t take action soon, the pollution will get much worse.

B. Unless you don’t take action soon, the pollution will get much worse.

C. The pollution will get much worse if you didn’t take action soon.

D. Only if you take action soon, the pollution will get much worse.

7. The fire will go out if we don’t put more wood on.

A. If we don’t put more wood on, the fire won’t go out. B. Unless we put more wood on, the fire will go out.

C. The fire will go out, so we don’t put more wood on. D. Unless we put more wood on, the fire won’t go out.

8. They spent a lot of money on food and clothes.

A. A lot of money was spent on food and clothes. B. A lot of money were spent on food and clothes.

C. A lot of money on food and clothes were spent. D. A lot of money on food and clothes was spent.

9. People have used the Internet all over the world.

A. The Internet has used all over the world. B. The Internet was used all over the world.

C. The Internet has been used all over the world. D. The Internet has been using all over the world.

10. Our house is going to be rebuilt by a local firm.

A. We are going to rebuild our house. B. We are going to have our house to rebuild.

C. A local firm are going to rebuild our house. D. A local firm is going to rebuild our house.