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

It is blowing so hard. We___ such a terrible storm.

A.  never know

B. had never known

C. have never known

D. have never been knowing

a. Xét tam giác ABE và tam giác MBE có:

BE: cạnh chung

góc ABE= góc EBM( vì BE là TPG)

góc A= góc M = 90 độ

Suy ra: tam giác ABE= tam giác MBE ( cạnh huyền, góc nhọn)

b.tam giác ABE= tam giác MBE. Suy ra: AB=MB; AE=ME

AB=MB. Suy ra: B thuộc đường trung trực của AM (1)

AE= ME. Suy ra: E thuộc đường trung trực của AM (2)

(1),(2) suy ra: BE là đường trung trực của AM.

c.Ta có : AE= ME ( câu b) (3)

Tam giác MEC vuông tại M suy ra EC>ME (4)

(3), (4) suy ra AE<EC

f(x) = x^2 - x-x+2= x^2 - 1/2x- 1/2x + 1/4 + 7/4

= x(x- 1/2) - 1/2(x + 1/2) + 7/4

= x ( x+1/2) + 1/2(x + 1/2) + 7/4

= (x+ 1/2) ( x+1/2) + 7/4= (x+ 1/2)^2 + 7/4

Ta có: (x+1/2)^2 > hoặc = 0 với mọi x

Suy ra:( x + 1/2)^2 + 7/4 > 0

Vậy: f(x)= x^2 -x-x+2 không có nghiệm

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 55 to 64.

          My family consists of four people. There’s my father whose name is Jan, my mother whose name is Marie, my brother, Peter and of course, me. I have quite a large extended family as well but, only the four of us live together in our apartment in a block of flats. My father is fifty-two years old. He works as an accountant in an insurance company. He is tall and slim, has got short brown and gray hair and blue eyes. My father likes gardening very much as well as listening to music and reading books about political science. His special hobbies are bird watching and travelling.

Now I’ll describe my mother and my brother. My mother is forty-seven and she works as a nurse in a hospital. She is small, and slim, has short brown hair and green eyes. She likes bird watching and travelling too, so whenever my parents are able to they go some place interesting for nature watching. Since we have a cottage with a garden they both spend a lot of time there. My brother is sixteen. He is slim and has short brown hair and blue eyes. He also attends high school. He is interested in computers and sports like football and hockey. He also spends a lot of time with his friends.

I have only one grandmother left still living. She is in pretty good health even at the age of seventy-eight so she still lives in her own flat. I enjoy spending time with her when I can. Both my grandfathers died from cancer because they were smokers, which was really a great tragedy because I didn’t get chance to know them. My other grandmother died just a few years ago. I also have a lot of aunts, uncles, and cousins. The cousin I’m closest to is my uncle’s daughter Pauline. We have a lot in common because we are both eighteen and so we are good friends.

My parents have assigned me certain duties around the house. I don’t mind helping out because everyone in a family should contribute in some way. I help with the washing up, the vacuuming and the shopping. Of course I also have to help keep my room tidy as well. My brother is responsible for the dusting and mopping. He also has to clean his own room. Even though my brother and I sometimes fight about who has to do what job, we are still very close. I am also very close to my parents and I can rely on them to help me. My patents work together to keep our home well maintained and it seem they always have a project or another that they are working on. They respect each other’s opinions and even if they disagree they can always come to a compromise. I hope in the future that I have a family like ours.

What does the writer do to help her parents at home?

A. She does the dusting.

B. She does the mopping.

C. She does the washing.

D. She does the shopping.

+ Bữa cơm, đồ dùng, cái nhà,... của Bác đều rất giản dị

+ Dùng những từ ngữ dễ hiểu mong muốn nhân dân hiểu được, làm được, làm những điều đơn giản như viết thư hỏi thăm cho 1 đồng chí hay đi thăm các cháu miền Nam

Có bài tương tự đó bạn!

1C,2C,3D

Lật đổ chính quyền của chúa Nguyễn, Trịnh và vua Lê, xóa bỏ sự chia cắt đất nước, đặt nền tảng thống nhất quốc gia. Đánh tan quân xâm lược Xiêm, Thanh bảo vệ nền độc lập và lãnh thổ Tổ quốc.

Read the following passage, and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

      Although management principles have been implemented since ancient times, most management scholars trace the beginning of modern management thought back to the early 1900s, beginning with the pioneering work of Frederick Taylor (1856-1915) Taylor was the first person to study work scientifically. He is most famous for introducing techniques of time and motion study, differential piece rate systems, and for systematically specializing the work of operating employees and managers. Along with other pioneers such as Frank and Lillian Gilbreth, Taylor set the stage, labeling his philosophy and methods “scientific management’. At that time, his philosophy, which was concerned with productivity, but which was often misinterpreted as promoting worker interests at the expense of management, was in marked contrast to the prevailing industrial norms of worker exploitation.

      The time and motion study concepts were popularized by Frank and Lillian Gilbreth. The Gilbreths had 12 children. By analyzing his children’s dishwashing and bedmaking chores, this pioneer efficiency expert, Frank Gilbreth, hit on principles whereby workers could eliminate waste motion. He was memorialized by two of his children in their 1949 book called “Cheaper by the Dozen”.

          The Gilbreth methods included using stop watches to time worker movements and special tools (cameras and special clocks) to monitor and study worker performance, and also involved identification of “therbligs” (Gilbreth spelled backwards) - basic motions used in production jobs. Many of these motions and accompanying times have been used to determine how long it should take a skilled worker to perform a given job. In this way an industrial engineer can get a handle on the approximate time it should take to produce a product or provide a service. However, use of work analysis in this way is unlikely to lead to useful results unless all five work dimensions are considered: physical, psychological, social, cultural, and power.

According to the passage, Frank Gilbreth discovered how workers could eliminate waste motion by

A. using special tools such as cameras and clocks

B. using stop watches

C. applying scientific management principles

D. watching his children do their chores

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer for each of the questions.

Throughout the world there are different ways for people to greet each other. In much of the world, a handshake is the (38) __________ form of welcoming and greeting someone. In many countries around the Mediterranean Sea a (39) ___________ kiss on the cheek is the appropriate way to welcome friends and family. It can be a very (40) __________ surprise if you expect to shake hands and get a kiss or a hug instead.

At times, it is difficult to tell what sort of greeting (41) ___________ is followed. People may bow, grab another‟s arm or even slap the other person on the back. In some places people just smile, look at the other‟s face and say nothing.

Most people in the world are tolerant of visitors and don‟t mind what travellers do that seems wrong as long as the visitors are (42)__________. A big part of the delightfulness of world travel is experiencing different customs.

Question 38

A.different

B.unique

C.common

D.same