viết bài văn về một thái độ học đối phó tầm 1 trang giấy rưỡi 

Cho đa thức: f(x) = x ^ 2 + ax + b Xác định a và b biết rằng đa thức f(x) có hai nghiệm là x_{1} = 2 và x_{2} = 3

Mark the letter A, B, C, or D on your answer sheet to indicate the word whose underlined part differs from the other three in pronunciation in each of the following questions.

Question 1. A. passed                B. laughed              C. practiced                D. succeeded

Question 2. A. space                 B. sale                    C. tablet                      D. plate

Mark the letter A, B, C, or D on your answer sheet to indicate the word that differs from the other three in the position of primary stress in each of the following questions.

Question 3. A. Venus                B. station                C. believe                   D. planet

Question 4. A. laptop                B. device                C. storage                   D. tablet

Circle the best options (A, B, C, or D).

Question 5. Anna saw a humanlike object last night, and she thought it was a(n) _______.

A. sighting

B. alien

C. weight

D. model

Question 6. _______ this laptop heavy?

A. Is

B. Does

C. Are

D. Do

Question 7. The VX9 completed the task more _______ than the X150. The X150 was very noisy.

A. carefully

B. quietly

C. beautifully

D. quickly

Question 8. I was _______ soccer at the park when I saw a bright light.

A. playing

B. played

C. play

D. plays

Question 9. Many people think that in the future, humans _______ on Mars.

A. will live

B. live

C. lived

D. were living

Question 10. Robomax can _______ more carefully than the Zbot. It’s very good at cleaning.

A. complete

B. recognize

C. work

D. lift

Question 11. Tom told me that he wanted to live on _______ Mars.

A. the

B. a

C. an

D. no article

Question 12. Mars and Venus are the best options to live on because they are near us _______ space.

A. on

B. in

C. at

D. from

Question 13. Some people believe that there are _______ living on different planets.

A. space stations

B. aliens

C. moons

D. flying saucers

Give the correct form of the words in brackets.

Question 14. My robot vacuum works _______. There’s still dust on the floor. (CARE)

Question 15. After a while, an alien-shaped creature _______ without a trace. (APPEARANCE)

Question 16. Modern computers are often light in _______ these days. (WEIGH)

Question 17. They were watching a soccer game when they saw a _______ object in the sky. (STRANGER)

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

Question 18. How much hours does his tablet last?

                                   A       B      C                    D

Question 19. Max was sitting at his desk next to the window when a bright light appears across from him.

                                 A       B                                                         C                              D

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) CLOSEST in meaning to the underlined word(s) in each of the following questions.

Question 20. That robot can navigate very well.

A. lift

B. look

C. move

D. rescue

Question 21. Newspapers sometimes describe an alien as a visitor from space.

A. guest

B. host

C. relative

D. acquaintance

Mark the letter A, B, C, or D on your answer sheet to indicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.

Question 22. PinkBot can lift objects higher than BluBot.

A. faster

B. lower

C. better

D. farther

Question 23. A hiker was walking up the mountain when he came face to face with an alien.

A. direct

B. indirect

C. in person

D. eye to eye

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following questions. 

Question 24. Liam: You won’t believe what I saw. – Ava: _______.

A. Yes, it was.

B. It was good.          

C. What happened?

D. It was a good idea!

Question 25. Tom is talking to a sales assistant about a tablet he wants to buy.

Tom: Is this tablet heavy?

Sales assistant: _______.

A. Yes, it does.

B. Yes, it is.

C. No, it doesn’t.

D. No, thank you.

Read the following text and choose the correct answers.

Hello! I'm Kate. I want to write about my (26) _______ devices. First, I have a smartphone. I got it from my parents on Christmas two years ago. I like it very much because you can also connect the phone to a smartband similar to a watch and answer the calls. I think it's sometimes good to have my smartphone in my bag.

I always listen to music on my mp3 player. I like it because I feel relaxed. Sometimes I use my laptop to do my homework and I save my files in my flashdrive, (27) _______ I bring them anywhere. When I feel bored at home, I can use my smart tv to connect to the Internet and watch movies or series on Netflix or play video games using my virtual glasses so it looks like reality. Isn't it fantastic?  

Last year, I was on a cycling holiday with my friend. We went cycling to take pictures with my cam but the weather wasn't good. It was cold and windy. It started to rain and it got dark. Suddenly my friend (28) _______ an accident and she broke her leg. At first I didn't know what to do, but then I thought about my smartphone. It was in my pocket so I telephoned for help. After fifteen minutes (29) _______ ambulance arrived.

Sometimes, smartphones are a real problem because they always ring at the wrong moment. I'm not crazy (30) _______ my mobile phone but I feel safe when I have it with me.

Question 26.

A. technological

B. technology

C. technologist

D. technical

Question 27.

A. so

B. because

C. but

D. however

Question 28.

A. made

B. saw

C. took

D. had

Question 29.

A. a

B. an

C. the

D. no article

Question 30.

A. on

B. at

C. about

D. of

Read the text about past explanations for UFOs. Write T (true), F (false) or DS (doesn’t say).

PAST EXPLANATION for UFOS

An unidentified flying object, or UFO, is anything in the sky that the person who sees it cannot explain. Some people believe UFOs are alien spacecraft. However, most scientists believe that it can be easier to explain UFOs. A UFO has different descriptions. It can take the form of a disk, triangle or even an egg. After a sighting of a disk-shaped UFO in the 1940s, the term "flying saucer" became popular. It soon became fashionable to call all UFOs flying saucers. Nowadays, there are records of thousands of UFO sightings. These are photographs of UFOs and conversations with the people who saw UFOs. In the 1950s, a government asked a group of scientists to study hundreds of sightings. However, most sightings were just space objects like stars, planets or meteors. A lot of other sightings were only aircraft, birds or hot gases. However, such things didn't stop people from reporting UFOs. By the mid-1960s, there were even more sightings of UFOs than ever. People also found that most UFO or alien sightings happened in bad weather. But governments around the world still believed that UFOs were unreal. Other scientists agreed. But it was hard to explain why UFOs still appeared. Nowadays, researchers believe that UFOs might be visitors from space.

Question 31. It is easy for a person to describe a UFO when he or she sees it.  _______

Question 32. Most researchers believe that explaining UFOs will be easier.           _______

Question 33. A UFO can be a disk-shaped or egg-shaped object.                      _______

Question 34. The term “flying saucer” was popular in the 1940s.                      _______

Question 35. There are thousands of UFO sightings these days.                        _______

Rearrange the given words to make complete sentences.

Question 36. The/ laptop/ a/ battery/ life./ long/ has

→ ______________________________________________________.

Question 37. robot/ The/ contest/ place/ takes/ year./ every

→ ______________________________________________________.

Make complete sentences using the prompts.

Question 38. Where/ you think/ people/ live/ 2200s?

→ ______________________________________________________.

Question 39. you/ think/ Mars/ be/ good/ place/ humans/ live/ on?

→ ______________________________________________________.

Question 40. Phoenix/ can/ complete/ tasks/ fast/ quietly/ than/ Birdie.

→ ______________________________________________________.

Cho đa thức: f(x) = x ^ 2 + ax + b Xác định a và b biết rằng đa thức f(x) có hai nghiệm là x_{1} = 2 và x_{2} = 3

Cho tam giác ABC vuông tại A (AB<AC), đường cao AH. Từ H kẻ IM vuông góc với AB và HN vuông góc với AC (M thuộc AB;N thuộc AC)

a) Chứng minh tứ giác AMNH là hình chữ nhật và AH=MN.

b) Gọi O là giao điểm của AH và MN. Trên  CN lấy P sao cho NA=NP, H cắt MP tại I. Gọi J là chung điểm của HC. Chứng minh MN//HP và O,I,J thảng hàng.

c) Trên tia AJ lấy điểm E sao cho J là chung điểm của AE, MN cắt CE tại K. Tam giác ABC cần có điều kiện gì để tam giác MKE là tam giác vuông cân.

hãy cho biết khi một xe đạp điện đang hoạt động điện năng cung cấp cho xe đã chuyển hoa thành những dạng năng lượng nào