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IV. First conditional / future simple and simple present
1. I think she_ and join our party
A. won't come B. will come C.came D. comes
2. He'll be late for the train if he _ at once
A. won't start B. starts C. doesn't start D. didn't start
3. Unless I have a quiet room, I _ any work
A. can't do B. could do C. haven't done D. didn't do
4. If your girlfriend _ , you should try to help her
A. gets rid of B gets into trouble C. gets down D. gets away
5. If you eat too much fast food, you _ serious health problems
A. have B. will have C had D. would have
6. Will online learning _ our IT skills ? Yes , it will
A improve B improves C improving D improved
7 The patient will not recover unless he _ an operation
A had undergone B would undergo C undergoes D was undergoing
8 If it _ convenient let's go out for dinner tonight
A be B is C was D were
9 If we meet at 9:00 we _ plenty of time to talk
A have B is having C wil, have D had
10. this beach looks amazing ! I think we _ this place !
A are loving B are going to love C will love
11. I _ you to the airport tomorrow if you need someone to give you a lift
A take B am talking C will take
12. My plane _ at manchester airport at 8 p.m tomorrow evening
A lands B will land C landed
13. We have some ideas for what we want to do while we are here in scotland. If the weather is nice, we _ a mountain on one of the days.
A. climb B.are climbing C are going to climb
14 What shall I do today? I think I _ to the beach while the sun is out !
A go B am going C will go
15 I'm sorry but I cannot come to meal tonight. I _ work at 8 p.m tonight, so I _ arrive at the restaurant on time !
A. finish- will B will finish- will C finishes- will
16. If you tell me your secret , I promise I _ anyone !
A. am not telling B won't tell C am telling
17. I think the earth _ a lot war,er in 50 years
A is becoming B will become C becomes
18. I _ my friend in sicily sometime this year, but I'm not sure when
A am visting B am going to visit C will visit
19. I _ a valedictorian next year
A. am going to try B will try C will going to try
20 Hurry up, otherwise you will be late for school
A If you hurry up, you will be late for school
B Although you hurry up, you are late for school
C. you will be late for school because you don't hurry up
D. If you don't hurry up, you will be late for school
21. Stay away from this area or I'll report the police
A. If you don't saty away this area, I will report the police
B If you don't saty this area, I would report the police
C I'll report the police unless you stay away from this area
D Unless you don't stay away from this area, I won't report the police.
22. Alice may miss the train. But she get the next one
A . If alice misses the train, she can't get the next one
B If alice misses the train, she can get the next one
C If alice missed the train, she couldn't get the next one
D. If alice issed the train, she could get the next one
23. I think we will get into trouble if we try to drive the car on that danger bridge
A. Unless we don't try to drive car on that danger bridge, we won't get into trouble
B Unless we try to drive the car on that danger bridge, we will get into trouble.
C. Because we try to drive the car con that danger bridge, we will get into trouble
D. When we try to drive the car on that danger bridge, I think we will get into trouble
24. We'll go camping as long as the weather is good
A. the weather is good when we'l will go camping
B. If the weather is better, we will go camping
C If the weather is fine, we will go camping
D. We'll go camping immediately the weather is good
IV. First conditional / future simple and simple present
1. I think she_ and join our party
A. won't come B. will come C.came D. comes
2. He'll be late for the train if he _ at once
A. won't start B. starts C. doesn't start D. didn't start
3. Unless I have a quiet room, I _ any work
A. can't do B. could do C. haven't done D. didn't do
4. If your girlfriend _ , you should try to help her
A. gets rid of B gets into trouble C. gets down D. gets away
5. If you eat too much fast food, you _ serious health problems
A. have B. will have C had D. would have
6. Will online learning _ our IT skills ? Yes , it will
A improve B improves C improving D improved
7 The patient will not recover unless he _ an operation
A had undergone B would undergo C undergoes D was undergoing
8 If it _ convenient let's go out for dinner tonight
A be B is C was D were
9 If we meet at 9:00 we _ plenty of time to talk
A have B is having C wil, have D had
10. this beach looks amazing ! I think we _ this place !
A are loving B are going to love C will love
11. I _ you to the airport tomorrow if you need someone to give you a lift
A take B am talking C will take
12. My plane _ at manchester airport at 8 p.m tomorrow evening
A lands B will land C landed
IV. First conditional / future simple and simple present
1. I think she_ and join our party
A. won't come B. will come C.came D. comes
2. He'll be late for the train if he _ at once
A. won't start B. starts C. doesn't start D. didn't start
3. Unless I have a quiet room, I _ any work
A. can't do B. could do C. haven't done D. didn't do
4. If your girlfriend _ , you should try to help her
A. gets rid of B gets into trouble C. gets down D. gets away
5. If you eat too much fast food, you _ serious health problems
A. have B. will have C had D. would have
6. Will online learning _ our IT skills ? Yes , it will
A improve B improves C improving D improved
7 The patient will not recover unless he _ an operation
A had undergone B would undergo C undergoes D was undergoing
8 If it _ convenient let's go out for dinner tonight
A be B is C was D were
9 If we meet at 9:00 we _ plenty of time to talk
A have B is having C wil, have D had
10. this beach looks amazing ! I think we _ this place !
A are loving B are going to love C will love
11. I _ you to the airport tomorrow if you need someone to give you a lift
A take B am talking C will take
12. My plane _ at manchester airport at 8 p.m tomorrow evening
A lands B will land C landed
13. We have some ideas for what we want to do while we are here in scotland. If the weather is nice, we _ a mountain on one of the days.
A. climb B.are climbing C are going to climb
14 What shall I do today? I think I _ to the beach while the sun is out !
A go B am going C will go
15 I'm sorry but I cannot come to meal tonight. I _ work at 8 p.m tonight, so I _ arrive at the restaurant on time !
A. finish- will B will finish- will C finishes- will
16. If you tell me your secret , I promise I _ anyone !
A. am not telling B won't tell C am telling
17. I think the earth _ a lot war,er in 50 years
A is becoming B will become C becomes
18. I _ my friend in sicily sometime this year, but I'm not sure when
A am visting B am going to visit C will visit
19. I _ a valedictorian next year
A. am going to try B will try C will going to try
1. I think she_ and join our party
A. won't come B. will come C.came D. comes
2. He'll be late for the train if he _ at once
A. won't start B. starts C. doesn't start D. didn't start
3. Unless I have a quiet room, I _ any work
A. can't do B. could do C. haven't done D. didn't do
4. If your girlfriend _ , you should try to help her
A. gets rid of B gets into trouble C. gets down D. gets away
5. If you eat too much fast food, you _ serious health problems
A. have B. will have C had D. would have
6. Will online learning _ our IT skills ? Yes , it will
A improve B improves C improving D improved
7 The patient will not recover unless he _ an operation
A had undergone B would undergo C undergoes D was undergoing
8 If it _ convenient let's go out for dinner tonight
A be B is C was D were
9 If we meet at 9:00 we _ plenty of time to talk
A have B is having C wil, have D had
10. this beach looks amazing ! I think we _ this place !
A are loving B are going to love C will love
11. I _ you to the airport tomorrow if you need someone to give you a lift
A take B am talking C will take
12. My plane _ at manchester airport at 8 p.m tomorrow evening
A lands B will land C landed
13. We have some ideas for what we want to do while we are here in scotland. If the weather is nice, we _ a mountain on one of the days.
A. climb B.are climbing C are going to climb
14 What shall I do today? I think I _ to the beach while the sun is out !
A go B am going C will go
15 I'm sorry but I cannot come to meal tonight. I _ work at 8 p.m tonight, so I _ arrive at the restaurant on time !
A. finish- will B will finish- will C finishes- will
16. If you tell me your secret , I promise I _ anyone !
A. am not telling B won't tell C am telling
17. I think the earth _ a lot war,er in 50 years
A is becoming B will become C becomes
18. I _ my friend in sicily sometime this year, but I'm not sure when
A am visting B am going to visit C will visit
19. I _ a valedictorian next year
A. am going to try B will try C will going to try
20 Hurry up, otherwise you will be late for school
A If you hurry up, you will be late for school
B Although you hurry up, you are late for school
C. you will be late for school because you don't hurry up
D. If you don't hurry up, you will be late for school
Đáp án B
Hãy bắt đầu chuyến đi hoặc chúng tôi sẽ đến trễ.
A. Nếu chúng ta bắt đầu chuyến đi, chúng ta sẽ không đến trễ.
B. Trừ khi chúng ta bắt đầu đi, chúng ta sẽ không đến trễ.
C. Nếu chúng ta không bắt đầu đi, chúng ta sẽ đến trễ
D. Chúng tôi đã đến trễ nếu chúng tôi không bắt đầu đi.
Ta có:
2225=(23)75=875
3150=(32)75=975
Vì 875<975 suy ra 2225<3150
Ta có : 2225 và 3150
\(\Leftrightarrow\)(23)75 và (32)75
\(\Leftrightarrow\)875 và 975
Vì trong hai lũy thừa nếu cùng số mũ bằng nhau thì có số nào lớn hơn thì lớn hơn nên:
875 < (9)75
hay 2225 < 3150
Thành phần nào là chủ ngữ của câu: "Đó là cây thông đẹp nhất."?
Trả lời giùm đi
sắp phải nộp òi
cứu tui
1. Parents should start early to put some money aside for their children for college.
2. Let's put our differences aside and make a fresh start.
3. We're putting away 100,000 dong a week for our vacation.
4. Sportsmen put aside their political differences on the sport field.
5. Children should be taught to put away their toys when they have finished playing.
6. Once a child can walk, they can start to put their toys back on the shelves.
7. It's an interesting idea and I thought he put it across very well.
8. I don't think I managed to put myself across very well in my interview.
9. The proposals that you have put forward deserve serious consideration.
10. Many suggestions have been put forth, but a decision is unlikely until after next year's general election.
ĐK: a,b thuộc Q
Ta có: a/b = ab => ab/b^2 = ab => b^2 = 1 => b = 1 hoặc -1
Với b = 1, a + b = a.b => a + 1 = a (vô lí)
Với b = - 1, a + b = ab => a -1 = -a => 2a = 1 => a = 1/2 (thỏa Đk)
Vậy cặp số hữu tỉ cần tìm là 1/2 và -1
P/s: Đăng 1 lần thôi là ng̀ ta bt rồi, mắc chi đăng lắm v?
ĐKXĐ: b khác 0
Xét 2 TH:
với a khác 0 thì ab=a/b=>b=1/b=>b^2=1=>b=1
thay b=1 vào a+b=ab có a+1=a (vô lĩ)
với a bằng 0 thì a+b=a/b=>0+b=0=>b=0 (không thỏa mãn ĐKXĐ)
vậy ko cá các cặp số hữu tỉ a,b thỏa mãn cái đề bài
và
dạ cảm ơn ạ!