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III.CHOOSE THE MOST APPROPRIATE ANSWER TO COMPLETE THE SENTENCE BELOW1. Trung bought some goldfish and kept them in an_______________A. aquarium B. envelope C. river D. umbrella2. “Thanks a lot.” – “_______________”A. You’re welcome. B. That’s right! C. That’s OK D. I’d love to.3 Hi, Liz. Welcome back. How ……………….. your vacation in Nha Trang ?A. are B. is C. was D. were4. We should have a medical...........................every six months. A. treatment B. record C....
Đọc tiếp

III.CHOOSE THE MOST APPROPRIATE ANSWER TO COMPLETE THE SENTENCE BELOW

1. Trung bought some goldfish and kept them in an_______________

A. aquarium B. envelope C. river D. umbrella

2. “Thanks a lot.” – “_______________”

A. You’re welcome. B. That’s right! C. That’s OK D. I’d love to.

3 Hi, Liz. Welcome back. How ……………….. your vacation in Nha Trang ?

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

4. We should have a medical...........................every six months

. A. treatment B. record C. problem D. check-up

5. Moderation in eating is the _______to a healthy lifestyle.

A. important B. key C. door D. advice

6. Most of the world’s surface is____________( land / mountains / water / rivers )

7. Hoa feels sick. She ate too _____________candy last night.

A. much B. many C. a lot of D. More

9. Do you help your parents ________________the housework?

A. for B. abou C. to D. with

10. Tom likes volleyball,.........his brother doesn’t.His brother likes soccer.

A.and B.so C.but D.or

12. Walking is a good sports..............It makes us ...........

A.game-healthy B.game-health C.activity-healthy D.activity-health

13. Driving fast in a big city is very_______________.

A. happy B. easy C. dangerous D. careless

14. He explained the words ____________, but they did not understand at all.

A. clear B.hardly C. bad D. clearly

15. She _________ the beef thinly before stir-frying it in a little vegetable oil.

A. boiled B. sliced C. added D. cooked

16“_______________” – “I feel terrible.”

A. What would you like to do? B. Why didn’t you go to school yesterday? C. What was wrong with you? D. What’s the matter?

17. _____________ to have dinner at my house? – Yes. I’d love to.

A. Do you like B. Would you like C What about D. Should We

18. What was ____________ with her ?

A. matter B. problem C. wrong D. symptom

20. Don’t forget ……………….. off the lights before going out.

A. to turn B. turned C. turning D. turn

21. Every day, I get up early to ………………. morning exercises.

A. do B. make C. take D. A & C are correct

22 We can learn more about the undersea thanks ………………………… this invention.

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

23. The medicines you take only relieve the ________.

A. temperature B. cold C. symptoms D. cure

24. Don’t eat this durian. It’s not _________________.

a. good b. green c. ripe d. cool

26. ........... is a condition of the body when it is too hot because of illness.

A. Cold B. Fever C. Cough D. Flu

27. I’d like _________ by listening to music at breaktime.

A. relaxed B. relaxing C. to relax D. relax

28. “I didn’t like the film.” – “ _____________”

A. We did, either. B. Neither did we. C. We didn’t, too. D. So did we.

30. I ‘ve got a headache.-................................................

A.You must take some medicine B.You mustn’t stay in bed C.You ought to stay up late D.You shouldn’t take a rest A B C

IV. Complete the passage, using the words given in the box any, far, new, years, from, by, live, in, with, motorbike Lan is our (1)______ classmate. She comes (2) _____ Nha Trang. She is (3) ____ class 7A. She is thirteen (4) _____ old. Her parents (5) ______ in Nha Trang. Now she’s living (6) _____ her aunt and uncle in HCM city. Her house is (7) ____ from school. So, she usually goes to school (8)____ bus. a. Cleaning floor day. b. Caution wet floor. c. Wet floor ahead. d. Keeping out of floor 29. Khang and I _________ swim when we were only five years old. A. should B. could C. can D. must IV. Complete the passage, using the words given in the box any, far, new, years, from, by, live, in, with, motorbike Lan is our (1)______ classmate. She comes (2) _____ Nha Trang. She is (3) ____ class 7A. She is thirteen (4) _____ old. Her parents (5) ______ in Nha Trang. Now she’s living (6) _____ her aunt and uncle in HCM city. Her house is (7) ____ from school. So, she usually goes to school (8)____ bus. Sometimes, her aunt takes her to school by (9) _______. She doesn’t have (10) _____ friends. So she feels sad. V. Write in the correct order to have meaningful sentence 1. on/ may/ Lan/ be/ will/ Sunday/ 25th/ 13. ……………………………………………………………

2. Call/ six/ will/ I/ after/ o’ clock/ again/her. ……………………………………………………………

3. speak/ can/?/ I/ Van/ to/ please. ……………………………………………………………

4. you/ free/ morning/ be/ will/ tomorrow/? ……………………………………………………………

5. parents/ Thu/ with/ in/ lives/ Hanoi/ her. ……………………………………………………………

2
18 tháng 3 2020

III.CHOOSE THE MOST APPROPRIATE ANSWER TO COMPLETE THE SENTENCE BELOW

1. Trung bought some goldfish and kept them in an_______________

A. aquarium B. envelope C. river D. umbrella

2. “Thanks a lot.” – “_______________”

A. You’re welcome. B. That’s right! C. That’s OK D. I’d love to.

3 Hi, Liz. Welcome back. How ……………….. your vacation in Nha Trang ?

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

4. We should have a medical...........................every six months

. A. treatment B. record C. problem D. check-up

5. Moderation in eating is the _______to a healthy lifestyle.

A. important B. key C. door D. advice

6. Most of the world’s surface is____________( land / mountains / water / rivers )

7. Hoa feels sick. She ate too _____________candy last night.

A. much B. many C. a lot of D. More

9. Do you help your parents ________________the housework?

A. for B. about C. to D. with

10. Tom s volleyball,.........his brother doesn’t.His brother s soccer.

A.and B.so C.but D.or

12. Walking is a good sports..............It makes us ...........

A.game-healthy B.game-health C.activity-healthy D.activity-health

13. Driving fast in a big city is very_______________.

A. happy B. easy C. dangerous D. careless

14. He explained the words ____________, but they did not understand at all.

A. clear B.hardly C. bad D. clearly

15. She _________ the beef thinly before stir-frying it in a little vegetable oil.

A. boiled B. sliced C. added D. cooked

16“_______________” – “I feel terrible.”

A. What would you to do? B. Why didn’t you go to school yesterday? C. What was wrong with you? D. What’s the matter with you?

17. _____________ to have dinner at my house? – Yes. I’d love to.

A. Do you B. Would you C What about D. Should We

18. What was ____________ with her ?

A. matter B. problem C. wrong D. symptom

20. Don’t forget ……………….. off the lights before going out.

A. to turn B. turned C. turning D. turn

21. Every day, I get up early to ………………. morning exercises.

A. do B. make C. take D. A & C are correct

22 We can learn more about the undersea thanks ………………………… this invention.

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

23. The medicines you take only relieve the ________.

A. temperature B. cold C. symptoms D. cure

24. Don’t eat this durian. It’s not _________________.

a. good b. green c. ripe d. cool

26. ........... is a condition of the body when it is too hot because of illness.

A. Cold B. Fever C. Cough D. Flu

27. I’d _________ by listening to music at breaktime.

A. relaxed B. relaxing C. to relax D. relax

28. “I didn’t the film.” – “ _____________”

A. We did, either. B. Neither did we. C. We didn’t, too. D. So did we.

30. I ‘ve got a headache.-................................................

A.You must take some medicine B.You mustn’t stay in bed C.You ought to stay up late D.You shouldn’t take a rest

 a. Cleaning floor day. b. Caution wet floor. c. Wet floor ahead. d. Keeping out of floor

29. Khang and I ___could______ swim when we were only five years old.

A. should B. could C. can D. must

IV. Complete the passage, using the words given in the box any, far, new, years, from, by, live, in, with, motorbike Lan is our (1)___new___ classmate. She comes (2) __from___ Nha Trang. She is (3) _in___ class 7A. She is thirteen (4) __years___ old. Her parents (5) live______ in Nha Trang. Now she’s living (6) _with____ her aunt and uncle in HCM city. Her house is (7) ___far_ from school. So, she usually goes to school (8)___by_ bus. Sometimes, her aunt takes her to school by (9) ___motorbike____. She doesn’t have (10) __any___ friends. So she feels sad.

V. Write in the correct order to have meaningful sentence

1. on/ may/ Lan/ be/ will/ Sunday/ 25th/ 13.

=>Lan will be 13 on Sunday May 25th.

2. Call/ six/ will/ I/ after/ o’ clock/ again/her. 

=>I will call her again after six o'clock.

3. speak/ can/?/ I/ Van/ to/ please. 

=> Can I speak to Van ,please?

4. you/ free/ morning/ be/ will/ tomorrow/? 

=>Will you be free tomorrow morning?

5. parents/ Thu/ with/ in/ lives/ Hanoi/ her. 

=>Thu lives in Hanoi with her parent.

                                              -CHÚC BẠN HỌC TỐT -

                                                                                                                                       

19 tháng 3 2020

III.CHOOSE THE MOST APPROPRIATE ANSWER TO COMPLETE THE SENTENCE BELOW

1. Trung bought some goldfish and kept them in an_______________

A. aquarium B. envelope C. river D. umbrella

2. “Thanks a lot.” – “_______________”

A. You’re welcome. B. That’s right! C. That’s OK D. I’d love to.

3 Hi, Liz. Welcome back. How ……………….. your vacation in Nha Trang ?

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

4. We should have a medical...........................every six months

. A. treatment B. record C. problem D. check-up

5. Moderation in eating is the _______to a healthy lifestyle.

A. important B. key C. door D. advice

6. Most of the world’s surface is____________( land / mountains / water / rivers )

7. Hoa feels sick. She ate too _____________candy last night.

A. much B. many C. a lot of D. More

9. Do you help your parents ________________the housework?

A. for B. abou C. to D. with

10. Tom s volleyball,.........his brother doesn’t.His brother s soccer.

A.and B.so C.but D.or

12. Walking is a good sports..............It makes us ...........

A.game-healthy B.game-health C.activity-healthy D.activity-health

13. Driving fast in a big city is very_______________.

A. happy B. easy C. dangerous D. careless

14. He explained the words ____________, but they did not understand at all.

A. clear B.hardly C. bad D. clearly

15. She _________ the beef thinly before stir-frying it in a little vegetable oil.

A. boiled B. sliced C. added D. cooked

16“_______________” – “I feel terrible.”

A. What would you to do? B. Why didn’t you go to school yesterday? C. What was wrong with you? D. What’s the matter?

17. _____________ to have dinner at my house? – Yes. I’d love to.

A. Do you B. Would you C What about D. Should We

18. What was ____________ with her ?

A. matter B. problem C. wrong D. symptom

20. Don’t forget ……………….. off the lights before going out.

A. to turn B. turned C. turning D. turn

21. Every day, I get up early to ………………. morning exercises.

A. do B. make C. take D. A & C are correct

22 We can learn more about the undersea thanks ………………………… this invention.

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

23. The medicines you take only relieve the ________.

A. temperature B. cold C. symptoms D. cure

24. Don’t eat this durian. It’s not _________________.

a. good b. green c. ripe d. cool

26. ........... is a condition of the body when it is too hot because of illness.

A. Cold B. Fever C. Cough D. Flu

27. I’d _________ by listening to music at breaktime.

A. relaxed B. relaxing C. to relax D. relax

28. “I didn’t the film.” – “ _____________”

A. We did, either. B. Neither did we. C. We didn’t, too. D. So did we.

29. Khang and I _________ swim when we were only five years old.

A. should    B. could    C. can    D. must

30. I ‘ve got a headache.-................................................

A.You must take some medicine     B.You mustn’t stay in bed     C.You ought to stay up late    D.You shouldn’t take a rest A B C

IV. Complete the passage, using the words given in the box

                                                       any, far, new, years, from, by, live, in, with, motorbike

 Lan is our (1) new classmate. She comes (2) from Nha Trang. She is (3) in class 7A. She is thirteen (4) years old. Her parents (5) lives in Nha Trang. Now she’s living (6) with her aunt and uncle in HCM city. Her house is (7) far from school. So, she usually goes to school (8) by bus. Sometimes, her aunt takes her to school by (9) motorbike. She doesn’t have (10) any friends. So she feels sad.

V. Write in the correct order to have meaningful sentence 

1. on/ may/ Lan/ be/ will/ Sunday/ 25th/ 13.           Lan will be 13 on Sun day 15th.

2. Call/ six/ will/ I/ after/ o’ clock/ again/her.           I will call her again after 6 o'clock.

3. speak/ can/?/ I/ Van/ to/ please.                        Can I speak to Van please ?

4. you/ free/ morning/ be/ will/ tomorrow/?            Will you be free tomorrow morning ?

5. parents/ Thu/ with/ in/ lives/ Hanoi/ her.            Thu lives in Hanoi with her parents.

9x-1 = 1/9

9x-1 = 9-1

=> x-1 = -1

x = 0

12 tháng 3 2020

\(9^{x-1}=\frac{1}{9}\)

\(\Rightarrow9^{x-1}=9^{-1}\)

\(\Rightarrow x-1=-1\)

\(\Rightarrow x=-1+1\)

\(\Rightarrow x=0\)

12 tháng 3 2020

Áp dụng BĐT |a|+|b|≥|a+b| ta có:

P=|x−2012|+|x−2013|

=|2012−x|+|x−2013

≥|2012−x+x−2013|=1

Đẳng thức xảy ra khi 2012≤x≤2013

Vậy với 2012≤x≤2013 thì PMin=1

12 tháng 3 2020

AI GIÚP MIK VỚI

12 tháng 3 2020

Lịch sử đấu tranh dựng nước và giữ nước của dan tộc ta đã hình thành một truyền thống yêu nước quý báu. Truyền thống ấy đã thấm sâu vào trong mỗi người dân Việt Nam tạo nên một sức mạnh của dân tộc. như Bác Hồ đã nói : “Dân ta có một lòng nồng nàn yêu nước. Đó là truyền thống quý báu của dân tộc ta. Từ xưa đến nay, mỗi khi Tổ Quốc bị xâm lăng, thì tinh thần ấy lại sôi nổi, nó kết thành một làn sóng vô cùng mạnh mẽ, to lớn, nó lướt qua mọi sự nguy hiểm, khó khăn, nó nhấn chìm tất cả lũ bán nước và lũ cướp nước” .

Chúng ta cùng đi tìm hiểu để làm rõ hơn nhận định trên

Truyền thống yêu nước của nhân dân ta như thế nào? Trong công cuộc xây dựng đất nước. Từ bao đời nay, ông cha ta đã khai thiên ra nước Việt Nam dân chủ cộng hòa. Từ một đất nước nghèo nàn lạc hậu và đã dần dần trở thành một nước có nền kinh tế, chính trị vững mạnh. Một đất nước giàu mạnh về mọi lĩnh vực để cúng sánh vai với các cường quốc năm châu. Và đặc biệt trong công cuộc bảo vệ đất nước. trải qua biết bao nhiêu cuộc kháng chiến, ông cha ta bao lớp người đi trước đã hi sinh không biết bao nhiêu xương máu để giữ vững bầu trời hòa bình cho dân tộc. từ khi mới độc lập thì đất nước phải đương đầu với giặc đói, giặc dốt, giặc ngoại xâm. Và có biết bao nhiêu thế lực thù địch đang chống phá đất nước nhưng chúng ta vẫn kiên quyết đề phòng đấu tranh chống các thế lực thù địch để giữ bầu trời hòa bình cho dân tộc.

Lịch sử đã chứng minh tinh thần chiến đấu và chiến thắng của bọn xâm lược.

Trong lịch sử phong kiến, lý thường kiệt đánh quân Tống trên sông như nguyệt. Trần hưng Đạo chiến thắng quân Mông Nguyên trên sông Bạch Đằng. Lê lợi kháng chiến chống quân Minh trong mười Năm khởi nghĩa Lam Sơn. Quang Trung đánh tan quân Thanh Xâm lược. Rồi trong cuộc kháng chiến chống Pháp thì toàn dân kháng chiến , đồng sức đồng lòng kháng chiến toàn diện. Và chiến Dịch Biên giới 1950,. Chiến dịch Hòa Bình 1952, chiến thắng Điện Biên Phủ 1954…..

Tiếp đến là cuộc kháng chiến chống Mỹ. Lòng yêu nước nồng nàn của nhân dân Miền Nam: cuộc đồng khởi nghĩa vĩ đại, thành lập mặt trận dân tộc giải phóng miền Nam năm 1960, cuộc tổng tiến công và nổi dậy năm mậu thân 1968…Tinh thần quyêt tâm kháng chiến của nhân dân miền Bắc. Chính nhờ tinh thần quyết tâm chống giặc bảo vệ Tổ quốc đã dẫn đến hết thắng lợi này đến thắng lợi khác Và cuối cùng là chiến thắng mùa xuân 1975, thống nhất đất nước.

Tinh thầng yêu nước của nhân dân ta vô cùng to lớn, chính nhờ tình thần đoàn kết chung sức một lòng vì tổ quốc thân yêu đã giữ vũng nền độc lập dân tộc thống nhất đất nước, tinh thần đó vô cùng to lớn. Trong giai đoạn hiện nay, thì tinh thần yêu nước đấy vẫn được giữ vũng vừa là bảo vệ, vừa là xây dựng đất nước

Cũng như bao truyền thống khác, tinh thần yêu nước là một nét đặc sắc trong văn hóa lâu đời của nước ta, nó được thể hiện từ xưa đến nay và đi sâu vào từng hành động, ý nghĩ của mỗi con người. Lòng yêu nước là yêu tất cả những gì tốt đẹp, yêu thiên nhiên muôn hình vạn trạng, yêu bầu trời trong xanh, yêu đàn chim bay lượn, yêu cả những dòng sông thân thương hay gần gũi nữa là yêu những chiếc lá mỏng manh. Nói cho cùng thì tinh thần yêu nước nó xuất phát từ ý chí, sự quyết tâm phấn đấu, xây dựng Tổ quốc, tình yêu thương và cả niềm hi vọng. Tinh thần yêu nước bao gồm cả nhiều tình yêu khác: tình yêu gia đình, quê hương, tình yêu con người. Nó được bộc lộ ở mọi lúc mọi nơi, mọi cá nhân, bất cứ nơi nào có người dân Việt Nam sống thì đó sẽ mãi là mầm mống, là chồi non của tinh thần yêu nước Việt Nam. Và đó cũng sẽ không phải là lí tưởng của mình dân tộc Việt Nam mà còn rất nhiều nước khác, lí tưởng ấy luôn đi đầu . 

Chúc bạn học tốt !

16 tháng 3 2020

 Between August and November 1888, the Whitechapel area of London was the scene of five brutal murders. He was rightly called Jack the Ripper. The ripper was an infamous serial killer. He was the first serial killer to do so in a largely populated area, although it seemed he had no malice for other people. The ripper also had no accomplices and accessories to the crime. Another fact was that he escaped with no charges. All the women murdered were prostitutes, and all except for one (Elizabeth Stride) were horribly mutilated.
His method of attack was to let these prostitutes ‘seduce’ him into using them for their services, which at that time he would strangle them, making them unconscious and killing them, this was done by stalking his victims. This was no motive in his killing either. Oddly enough, it is shown that Jack the Ripper that this murderer was nice to his victims in certain ways.
The first murder, of Mary Ann Nicholls, took place on 31 August. Her throat was cut and her abdomen was cut open brutally, it showed the intestines. She was found by Mr. Llewellyn.
Annie Chapman was killed on 8 September. Her throat was cut and was very maimed. The abdomen was cut open and her intestines were placed on her shoulders.
Elizabeth Stride was murdered on 30 September. Her throat was cut, but she wasn’t maimed. She was found by Mr. Phillips and Mr. Blackwell.
Catherine Eddoweson was also murdered on 30 September. Her throat was cut, her abdomen was cut open and the intestines were placed on her right shoulder. She had a lot of injuries in her face and her left kidney removed. Pieces of Eddowes apron were found in the doorway of a building in Goulston Street. Above her was written a message with chalk: ‘ The juwes are the men that will not be blamed for nothing’.
Mary Jane Kelly was killed on 9 November. She was the youngest and most comfortable of Jack’s victims and she was the most and badly maimed. Many think that she was the only intentional victim. She was murdered in her own room and her heart was missing.
There had been much speculation as to the identity of the killer. It has been suggested that he or she was a doctor or butcher, based on the evidence of weapons and the mutilations that occurred, which showed a knowledge of human anatomy.
Violence to prostitutes wasn’t uncommon and there were many instances of women being brutalised, but the nature of these murders strongly suggests a single perpetrator.
Jack the Ripper was never caught and he is not thought to have killed again after November 1888.

a)Theo hệ quả định lý Ta let có:

Xét tam giác FMC có :

AB // CD => AB // MC nên BF/FM=AB/CM(1)

Xét tam giác EDM có :

AB // DM => AE/EM=AB/DM(2)

Mà M là trung điểm DC => DM = MC

=> AB/DM=AB/MC(3)

Từ (1) (2) (3) => AE/EM=BF/FM

Xét tam giác MBA có : AE/EM=BF/FM=> EF // AB

b)Xét tam giác EDM có AB // DM => ME/AM=DM/AB(4)

Do EF//AB => EF/AB=ME/AM(5)

Từ (4) và (5) => DM/AB=EF/ABEF=DM=12/2=6cm