1 A number times with 7 and minus 3 equal to 4 times this number plus 6, thisnumber is ______.2 A school is organizing a school trip, there are 123 teachers, 723 students,each bus can only carry 45 of...

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 following questions.

Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.

Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.

According to paragraph 2, an atom's atomic number is determined by __________.

A. the sum of its protons and electrons

B. the difference in the mass of its neutrons and protons

C. the strength of the bond between its protons and neutrons

D. the total number of protons it has

1

DH

Dương Hoàn Anh

9 tháng 8 2018

Chọn D

Kiến thức: Đọc hiểu

Giải thích:

Theo đoạn 2, số lượng nguyên tử của một nguyên tố được xác định bởi __________.

A. tổng số proton và electron của nó

B. sự khác biệt về khối lượng giữa nơtron và proton của nó

C. sức mạnh của liên kết giữa các proton và nơtron của nó

D. tổng số proton nó có

Thông tin: Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons.

Tạm dịch: Các nguyên tố được xác định bởi hai con số: số lượng nguyên tử, bằng số lượng proton mà chúng có và trọng lượng nguyên tử, bằng tổng số nơtron và proton.

Read and answer the questions. Nam is lives in a small house in the centre of the village. His house is near new school. Everyday, he has breakfast at 6 o’clock. Now, he is walking to school with his friends. They go to school together every day. Nam and his friends are in grade 6 at Ngoc Son Secondary School. It is a small school with one building and a small schoolyard. This year there are fifteen classes with more than five hundreds students in his school. Most students are hard-working...

HM

Hoàng Mạnh Quân

13 tháng 7 2017

#Tiếng anh lớp 6

2

NT

Nguyễn Thị Nguyệt

13 tháng 7 2017

Read and answer the questions. Nam is lives in a small house in the centre of the village. His house is near new school. Everyday, he has breakfast at 6 o’clock. Now, he is walking to school with his friends. They go to school together every day. Nam and his friends are in grade 6 at Ngoc Son Secondary School. It is a small school with one building and a small schoolyard. This year there are fifteen classes with more than five hundreds students in his school. Most students are hard-working and serious. The school has about 20 teachers. They are all helpful and friendly. He really loves his school. Questions:

1. Where is Nam’s house?

=>It is a small house in the centre of the village.

2. What time does he have breakfast everyday?

=>he has breakfast at 6 o’clock.

3. Where does he study? ..

=>He studies at Ngoc Son Secondary School.

4. How many buildings are there in the school?

=> one building

5. What are the students like? ..

=>They are all helpful and friendly.

HT

Huy Thắng Nguyễn

13 tháng 7 2017

Read and answer the questions. Nam is lives in a small house in the centre of the village. His house is near new school. Everyday, he has breakfast at 6 o’clock. Now, he is walking to school with his friends. They go to school together every day. Nam and his friends are in grade 6 at Ngoc Son Secondary School. It is a small school with one building and a small schoolyard. This year there are fifteen classes with more than five hundreds students in his school. Most students are hard-working and serious. The school has about 20 teachers. They are all helpful and friendly. He really loves his school. Questions:

1. Where is Nam’s house?

-> His house is in the centre of the village.

2. What time does he have breakfast everyday?

-> Everyday, he has breakfast at 6 o'clock.

3. Where does he study?

-> He studies at Ngoc Son Secondary School.

4. How many buildings are there in the school?

-> There is one building in the school.

5. What are the students like?

-> Most students are hard-working and serious.

Read and answer the questions. Hi, I’m Nam. It's now my second week at the new school. My school is named after the national hero Quang Trung. It is located at 133 Tay Son Street in Nha Trang city. It is a big school with 40 classes and 4 laboratories. There are about 1 ,200 students in Quang Trung School. Every day all of us have to wear the uniform of a white shirt and blue pants to school. My school day starts at 6:45 and finishes at 11:45. At school, I learn many interesting subjects and...

HM

Hoàng Mạnh Quân

13 tháng 7 2017

#Tiếng anh lớp 6

1

NT

Nguyễn Thị Nguyệt

13 tháng 7 2017

Read and answer the questions. Hi, I’m Nam. It's now my second week at the new school. My school is named after the national hero Quang Trung. It is located at 133 Tay Son Street in Nha Trang city. It is a big school with 40 classes and 4 laboratories. There are about 1 ,200 students in Quang Trung School. Every day all of us have to wear the uniform of a white shirt and blue pants to school. My school day starts at 6:45 and finishes at 11:45. At school, I learn many interesting subjects and my favourite ones are English and Music. Now I am practicing an English song for the music class next week, so I'm really excited about that. I also participate in the drama club after school. I meet a lot of nice friends who are very talented.

Questions: 1. Where is Nam’s school?

=>It is located at 133 Tay Son Street in Nha Trang city.

2. How many classes are there in his school?

=> 40 classes

3. How many students are there in Quang Trung School?

=>There are about 1 ,200 students

4. Do the students have to wear uniform to school?

=>Yes,they do.

5. What subjects does Nam like at school?

=> English and Music

Read and answer the questions. Hello, I'm Trung. This is my school. It is small and old but it is beautiful. Behind the school, there is a large yard. After school in the afternoon we often play soccer there. The yard is clean and there are many trees and flowers there. My friends and I sit under these trees every morning to review our lessons. My school has two floors and fifteen classrooms. My classroom is on the first floor. There are forty-three teachers in my school. They are good teachers. I love them and I love my school very much. Questions:

1. Is Trung's school big ?

=>NO,it isn't

. 2. What is there behind Trung's school?

=>there is a large yard.

3. What do Trung's and his friends play after school?

=>They often play soccer

4. Where do Trung and his friends sit every morning to review their lessons?

=>They sit under these trees every morning to review our lessons.

5. Where do Trung and his friends sit every morning to review their lesson?

=>They sit under these trees every morning to review our lessons.

6. How many teachers are there in his school ?

=> There are forty-three teachers

I. Fill in each blank with a correct word to complete the passage . Then answer the questions Hoang lives in a small ( 1) ......... in the centre (2) ....... the village . His house is near his new school . Every day he has breakfast at 6a.m . Now , he is (3) ...... to school with his friends . They go there together every day . Hoang and his friends are in grade 9 (4) ......... Le Loi Secondary schoold . It's a small school (5) ..... one building and a small schoolyard . This near there are...

HH

hello hello

9 tháng 11 2018

#Tiếng anh lớp 12

1

NN

Ngố ngây ngô

9 tháng 11 2018

I. Fill in each blank with a correct word to complete the passage . Then answer the questions

Hoang lives in a small ( 1) ....house..... in the centre (2) .....of.. the village . His house is near his new school . Every day he has breakfast at 6a.m . Now , he is (3) ..walking.... to school with his friends . They go there together every day . Hoang and his friends are in grade 9 (4) ...at...... Le Loi Secondary schoold . It's a small school (5) ...with.. one building and a small schoolyard . This near there are 15 (6) ....teachers.... with more than 500 (7) .....students.... in her school . Most students are hard working and serious . The school has (8) ...over... 32 teachers . They are (9) ...helpful... and friendly the really loves his (10) ...school..

1. Where's Hoang's house ?

in the centre .of the village .

2. What is near his house ?

his new school

3. Does he often house lunch at 6a.m ?

no

4. Where does he study ?

at Le Loi Secondary schoold .

5. How does he go to school ?

on foot

6. What are the students and the teachers like ?

They are helpful and friendly

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 following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in...

LQ

Lê Quỳnh Anh

21 tháng 4 2018

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 following questions.

Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.

Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached.

In paragraph 1, why does the author compare the structure of an atom to a solar system?

A. To provide an explanation of atomic structure that will be easily understood

B. To show the influence of atomic structure on the world at the observable level

C. To show that the complex mathematical formulas used to explain atomic structure are inaccurate

D. To contrast the size of atoms with the size of objects at the observable level

1

DH

Dương Hoàn Anh

21 tháng 4 2018

Chọn A

Kiến thức: Đọc hiểu

Giải thích:

Trong đoạn 1, tại sao tác giả lại so sánh cấu trúc của một nguyên tử với hệ Mặt Trời?

A. Để đưa ra một lời giải thích về cấu trúc nguyên tử một cách dễ hiểu.

B. Để chỉ ra ảnh hưởng của cấu trúc nguyên tử đến thế giới ở cấp độ quan sát được.

C. Để chỉ ra rằng các công thức toán học phức tạp được sử dụng để giải thích cấu trúc nguyên tử là không chính xác.

D. Để tương phản kích thước của các nguyên tử với kích thước của các vật thể ở mức có thể quan sát được.

Thông tin: The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun.

Tạm dịch: Cấu trúc của một nguyên tử có thể được mô tả chính xác nhất giống như một hệ mặt trời nhỏ, với các nơtron ở trung tâm và các electron quay quanh chúng theo các quỹ đạo khác nhau, giống như các hành tinh quay quanh Mặt Trời

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 following questions. Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in...

LQ

Lê Quỳnh Anh

12 tháng 1 2017

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 following questions.

Atomic were once thought to be fundamental pieces of matter, but they are in turn made of smaller subatomic particles There are three major subatomic particles neutrons, protons, and electronic. Protons and neutrons can be broken into even smaller units, but these smaller units not occur naturally in nature and are thought to only be produced in manmade particle accelerators and perhaps in extreme stellar events like supernovas. The structure of an atom can best be described as a small solar system, with the neutrons at the center and the electrons circling them in various orbits, just as the planets circle the sun. In reality, the structure of an atom is far more complex, because the laws of physics are fundamentally different at the atomic level than at the level of the observable word. The true nature of atomic structure can only be expressed accurately through complex mathematical formulas. This explanation, however, is of little use to most average people.

Protons and neutrons have nearly equal mass and size, but protons carry a positive electrical charge, while neutrons carry no charge at all. Protons and neutrons are bound together by the strong nuclear force, one of the four basic forces in the universe. Protons and neutrons give atoms some of their most basic properties. Elements are defined by two numbers: their atomic number, which is equal to the number of protons they have, and their atomic weight, which is equal to total number of their neutrons and protons. In most lighter atoms, the number of neutrons and protons is equal, and the element is stable. In heavier atoms, however, there are more neutrons than protons, and the element is unstable, eventually losing neutrons through radioactive decay until a neutral state is reached

The word "stable" in bold in paragraph 2 is closest in meaning to _____.

A. neutral

B. unchanging

C. equal

D. heavy

1

DH

Dương Hoàn Anh

12 tháng 1 2017

Chọn B

Kiến thức: Đọc hiểu

Giải thích:

Từ "stable" được in đậm trong đoạn 2 có nghĩa gần nhất với _____.

A. trung tính

B. không thay đổi

C. bằng

D. nặng

Thông tin: In most lighter atoms, the number of neutrons and protons is equal, and the element is stable.

Tạm dịch: Trong hầu hết các nguyên tử nhẹ hơn, số lượng nơtron và proton bằng nhau và nguyên tố này bền vững

Read the passage carefully and choose correct answer for each question below.Education is another area of social life in which information technology is changing the way we communicate. Today's college students may not simple sit in a lecture or a library to learn about their field. Through their computers and the wonders of virtual reality they can participate in lifelike stimulated experiences. Consider the following scenario of the future of education made possible through developments in...

LQ

Lê Quỳnh Anh

17 tháng 11 2017

1

DH

Dương Hoàn Anh

17 tháng 11 2017

C

Câu 2 đoạn 2 “Some of the older children attend school only once or twice a week”: vài đứa trẻ đến trường một, hai lần trên tuần.

điền một từ thích hợp vào chỗ chấm WALKING IS FUN At my school there are different sports activities but I only take (1) ........ in one club called " Walking for fun " or WFF. Last year there was a district walking competition (2) .............. school children and my school team won the first (3)........ . Everybody was so happy and wished to keep this activity, (4) .............., we organized this club. The number of participants increases every week. The regular activity of...

NK

Nhók khờ cuồng Thiên Thiên

9 tháng 3 2017

#Tiếng anh lớp 7

3

TD

Tử Đằng

9 tháng 3 2017

điền một từ thích hợp vào chỗ chấm

WALKING IS FUN

At my school there are different sports activities but I only take (1) ...PART..... in one club called " Walking for fun " or WFF. Last year there was a district walking competition (2) ......FOR........ school children and my school team won the first (3)....PRIZE.... . Everybody was so happy and wished to keep this activity, (4) .....THEREFORE........., we organized this club. The number of participants increases every week. The regular activity of the club is a 5 km (5)....WALK.... to the beach (6) ...ON..... Sunday morning. Another activity is a walk - to - school day or WTS day. Members living near school volunteer to take a walk (7) ....INSTEAD...... of taking motorbike of bicycle trips every Wednesday. (8) .....WALKING..... is a fun, easy and inexpensive activity, and people of all (9) .....AGES...... and abilities can (10)...ENJOY..... it

PN

Phan Nguyễn Quỳnh Như

4 tháng 4 2018

1) part 2) for 3) prize 4) therefore 5) walk 6)on 7) instead 8) Walking 9) ages 10) enjoy

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 28 to 34. EDUCATION IN THE FUTURE Education is another area of social life in which information technology is changing the way we communicate. Today's college students may not simply sit in a lecture or a library to learn about their field. Through their computers and the wonders of virtual reality they can participate in lifelike simulated experiences....

LQ

Lê Quỳnh Anh

12 tháng 1 2017

1

DH

Dương Hoàn Anh

12 tháng 1 2017

Đáp án B

Học sinh mà trên 10 tuổi phải đi học boo nhiều lần trên tuần?

A. Không lần nào B. Một hoặc hai lần C. Ba lần D. Bốn lần

Căn cứ vào thông tin sau: "For children over the age of 10, daily attendance at schools is not compulsory. Some of the older children attend school only once or twice weekly to get tutorial support or instruction from a teacher." (Đối với những đứa trẻ trên 10 tuổi thì việc đi học hàng ngày là không bắt buộc. Một vài học sinh trong số này chỉ phải đến trường từ một đến hai buổi để nhận sự hỗ trợ và chỉ dẫn từ giáo viên)