Từ các số 0;1;2; 3; 4;5;6;7 có thể lập được bao nhiêu số tự nhiên có 6 chữ số khác nhau sao cho trong đó luôn có mặt ba chữ số 3, 4, 5?
Một người cận thị nhìn rõ vật ở vị trí khoảng 2m, muốn nhìn thấy một vật cách mắt 3m thì phải đeo kính cận. Hãy:
a) vẽ hình xác định vị trí ảnh để mắt người đeo kính và nhìn thấy được vật đó
Task 1: You borrowed an important textbook from a classmate last term. You now realise your classmate has returned home overseas and you still have the book. Write a letter to him/her. In your letter- apologise for the mistake- find out how important the book is to him/her- say what you will do Task 2: You have recently been to stay with an old friend for a few days. You hadnt seen each other for a long time. Write a letter to invite your friend to your house....
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Task 1: You borrowed an important textbook from a classmate last term. You now realise your classmate has returned home overseas and you still have the book. Write a letter to him/her. In your letter
- apologise for the mistake
- find out how important the book is to him/her
- say what you will do
Task 2: You have recently been to stay with an old friend for a few days. You hadn't seen each other for a long time. Write a letter to invite your friend to your house.
- say how you felt about the visit, say thank you him/her
- refer to something enjoyable that you did while staying with him/her
- invite your friend to visit you
Task 3: You have seen an advertisement for part-time work in a hotel for three months over the summer. Write a letter to the Manager. In your letter, you should
- say what experience you have
- ask what the work involves
- enquire about conditions
Task 4: You have recently ordered an item through the Internet, but are not happy with the purchase. Write to the company. In your letter/email:
- describe what you purchased
- explain why you are not happy with the purchase
- tell them what you would like them to do about the situation
Task 5: One of your friends recently got married, but you missed it and forgot to tell your friend that you couldn’t attend. Write a letter to your friend. In your letter,
- apologies for missing the marriage.
- explain why you missed it and why you could not tell it to your friend.
- promise him/her that you will see him/her as soon as possible after the wedding.
27 phút trước
What _____ interesting movie!
A. a B. an C. the D. my
Task 1: You borrowed an important textbook from a classmate last term. You now realise your classmate has returned home overseas and you still have the book. Write a letter to him/her. In your letter- apologise for the mistake- find out how important the book is to him/her- say what you will do Task 2: You have recently been to stay with an old friend for a few days. You hadnt seen each other for a long time. Write a letter to invite your friend to your house....
Đọc tiếp
Task 1: You borrowed an important textbook from a classmate last term. You now realise your classmate has returned home overseas and you still have the book. Write a letter to him/her. In your letter
- apologise for the mistake
- find out how important the book is to him/her
- say what you will do
Task 2: You have recently been to stay with an old friend for a few days. You hadn't seen each other for a long time. Write a letter to invite your friend to your house.
- say how you felt about the visit, say thank you him/her
- refer to something enjoyable that you did while staying with him/her
- invite your friend to visit you
Task 3: You have seen an advertisement for part-time work in a hotel for three months over the summer. Write a letter to the Manager. In your letter, you should
- say what experience you have
- ask what the work involves
- enquire about conditions
Task 4: You have recently ordered an item through the Internet, but are not happy with the purchase. Write to the company. In your letter/email:
- describe what you purchased
- explain why you are not happy with the purchase
- tell them what you would like them to do about the situation
Task 5: One of your friends recently got married, but you missed it and forgot to tell your friend that you couldn’t attend. Write a letter to your friend. In your letter,
- apologies for missing the marriage.
- explain why you missed it and why you could not tell it to your friend.
- promise him/her that you will see him/her as soon as possible after the wedding.
Task 1: Your school will hold a green summer campaign to help the people in needs in the countryside. Write an application letter in which you should mention- the reason why you want to join the campaign- the experience you have got- the activity you can join Task 2: In an advertisement, a man is looking for a tutor of English for his daughter in grade11. Write an application letter to apply for the job. In your letter, you should tell him:- How do you find this job...
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Task 1: Your school will hold a green summer campaign to help the people in needs in the countryside. Write an application letter in which you should mention
- the reason why you want to join the campaign
- the experience you have got
- the activity you can join
Task 2: In an advertisement, a man is looking for a tutor of English for his daughter in grade
11. Write an application letter to apply for the job. In your letter, you should tell him:
- How do you find this job? What experience in English that you have got
- Your motivation for this job.
- The date you can tutor; the way how he can contact you
Task 3. You want to apply for the following job. Write a letter to Mr. Moore describing your previous experience and explaining why you would be suitable for the job. Waiter/waitress/ tutor required for evening work. Some experience necessary.
-How do you find this job? What is your experience of this job
-Your motivation for this job.
-The date you can start working; the way how he can contact you
Task 4: You have seen an advertisement for part-time work in a hotel for three months over the summer. Write a letter to the Manager. In your letter, you should
- say what experience you have
- ask what the work involves
- enquire about conditions
Task 5. Look at the job opportunity adverted on Thanh Nien or Tuoi Tre newspaper and decide which one is suitable for your ability and then write your an application letter. (Teacher, shop assistant, English TA, receptionist, tour guide, bank teller)
- How do you find this job? What is your experience of this job
- Your motivation for this job.
- The date you can start working; the way how he can contact you
So sánh A= 4/1.2.3+6/3.4.5+...+200/99.100.101 và B = 3/2
Câu 1. Cho phương trình nhiệt hóa học của phản ứng: 3H2(g) + N2(g) -->2NH3(g) △rH298=-91,8kJ. Lượng nhiệt tỏa ra khi dùng 9 g H2(g) để tạo thành NH3(g) là bao nhiêu kJ?
Task 1: You borrowed an important textbook from a classmate last term. You now realise your classmate has returned home overseas and you still have the book. Write a letter to him/her. In your letter- apologise for the mistake- find out how important the book is to him/her- say what you will do Task 2: You have recently been to stay with an old friend for a few days. You hadnt seen each other for a long time. Write a letter to invite your friend to your house....
Đọc tiếp
Task 1: You borrowed an important textbook from a classmate last term. You now realise your classmate has returned home overseas and you still have the book. Write a letter to him/her. In your letter
- apologise for the mistake
- find out how important the book is to him/her
- say what you will do
Task 2: You have recently been to stay with an old friend for a few days. You hadn't seen each other for a long time. Write a letter to invite your friend to your house.
- say how you felt about the visit, say thank you him/her
- refer to something enjoyable that you did while staying with him/her
- invite your friend to visit you
Task 3: You have seen an advertisement for part-time work in a hotel for three months over the summer. Write a letter to the Manager. In your letter, you should
- say what experience you have
- ask what the work involves
- enquire about conditions
Task 4: You have recently ordered an item through the Internet, but are not happy with the purchase. Write to the company. In your letter/email:
- describe what you purchased
- explain why you are not happy with the purchase
- tell them what you would like them to do about the situation
Task 5: One of your friends recently got married, but you missed it and forgot to tell your friend that you couldn’t attend. Write a letter to your friend. In your letter,
- apologies for missing the marriage.
- explain why you missed it and why you could not tell it to your friend.
promise him/her that you will see him/her as soon as possible after the wedding
Bài 1: left(dfrac{1}{sqrt{x}+2}-dfrac{1}{sqrt{x}+7}right): dfrac{5}{sqrt{x}+7} dfrac{1}{sqrt{x}+2}Bài 2: Cho P left(dfrac{1}{sqrt{x}+1}-dfrac{1}{sqrt{x}-1}right):dfrac{2sqrt{x}+1}{2x-2} với x ≥ 0 , x ≠ 1a) Rút gọn b) Tìm x để P -dfrac{1}{2}c) Tìm x để P nhận giá trị âm
Đọc tiếp
Bài 1: \(\left(\dfrac{1}{\sqrt{x}+2}-\dfrac{1}{\sqrt{x}+7}\right)\): \(\dfrac{5}{\sqrt{x}+7}\)= \(\dfrac{1}{\sqrt{x}+2}\)
Bài 2:
Cho P= \(\left(\dfrac{1}{\sqrt{x}+1}-\dfrac{1}{\sqrt{x}-1}\right)\):\(\dfrac{2\sqrt{x}+1}{2x-2}\) với x ≥ 0 , x ≠ 1
a) Rút gọn
b) Tìm x để P= \(-\dfrac{1}{2}\)
c) Tìm x để P nhận giá trị âm