Tham gia Khóa học hè 2024 trên OLM ngay tại đây!

Ứng dụng OLM Phụ huynh cập nhật: Xem được chi tiết bài làm của con!

Đừng bỏ lỡ lịch livestream khóa học hè tuần 7 dành cho học sinh lớp 4 lên lớp 5!

Tham gia livestream ôn tập hè dành cho học sinh lớp 4 lên lớp 5 ngay tại đây!

K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

Tất cả Toán Vật lý Hóa học Sinh học Ngữ văn Tiếng anh Lịch sử Địa lý Tin học Công nghệ Giáo dục công dân Âm nhạc Mỹ thuật Tiếng anh thí điểm Lịch sử và Địa lý Thể dục Khoa học Tự nhiên và xã hội Đạo đức Thủ công Quốc phòng an ninh Tiếng việt Khoa học tự nhiên
Mua vip
NT
Nguyễn Thanh Uyên
18 tháng 8 2020
Louis Braille (1)........ in 1809 in Coupvray. He was a French (2).... of blind. He himself was blind from the age of three and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked ability in both science and (3)....... ,he became famous in Paris an organist and violoncellist. In 1826 Braille bega the (4)......blind in institute. Braille is known for his idea of modifying the Barbier "point writing" system, used for coded army messages to enable the blind...
Đọc tiếp

Louis Braille (1)........ in 1809 in Coupvray. He was a French (2).... of blind. He himself was blind from the age of three and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked ability in both science and (3)....... ,he became famous in Paris an organist and violoncellist. In 1826 Braille bega the (4)......blind in institute. Braille is known for his idea of modifying the Barbier "point writing" system, used for coded army messages to enable the blind to read. Point writing consists of embossed dots and dashes on cardboard; the Braille system derived from it is used (5)......today, in slightly modified form, and (6) ......countries. many

  1. A.is born. B. was born. C.bears. D.bore
  2. A.principal. B.customer. C.engineer. D.teacher
  3. A.music. B.mathematics. C. foreign language. D.literature
  4. A.teach. B.to teach. C teaching. D.taught
  5. A. succeed. B.success. C.successful. D.successfully
  6. A.on B.in. C. at. D.over
#Tiếng anh lớp 8
2
肖战
18 tháng 8 2020

1,was born

2,teacher

3,music

4,teaching

5,successfully

6,in

Đúng(0)
Y
❤ ~~ Yến ~~ ❤
18 tháng 8 2020

1.B

2.D

3.A

4.C

5.D

6.B

Đúng(1)
BT
Bảo Thy
20 tháng 10 2021
Louis Braille (1) ……………… in 1809 in Coupvray. He was a French (2) ……………… of the blind. He himself was blind from the age of three and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked ability in both science and (3) ………………, he became famous in Paris an organist and violoncellist. In 1826 Braille began (4) ……………… the blind in institute. Braille is known for his idea of modifying the Barbier “point writing” system, used for coded army messages to enable...
Đọc tiếp

Louis Braille (1) ……………… in 1809 in Coupvray. He was a French (2) ……………… of the blind. He himself was blind from the age of three and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked ability in both science and (3) ………………, he became famous in Paris an organist and violoncellist. In 1826 Braille began (4) ……………… the blind in institute. Braille is known for his idea of modifying the Barbier “point writing” system, used for coded army messages to enable the blind to read. Point writing consists of embossed dots and dashes on cardboard; the Braille system derived from it is used (5) ……………… today, in slightly modified form, and (6) ……………… many countries.

1. A. is born                            B. was born                       C. bears                              D. bore 

2. A. principal                         B. customer                       C. engineer                        D. teacher

3. A. music                             B. mathematics                  C. foreign language           D. literature

4. A. teach                              B. to teach                         C. teaching                        D. taught 

5. A. succeed                          B. success                          C. successful                      D. successfully 

6. A. on                                  B. in                                   C. at                                   D. over
#Tiếng anh lớp 8
2
DT
Đỗ Thanh Hải
CTVVIP
20 tháng 10 2021

1 B

2 D

3 A

4 C

5 D

6 B

Đúng(0)
PV
Phạm Vĩnh Linh
20 tháng 10 2021

Louis Braille (1) ……………… in 1809 in Coupvray. He was a French (2) ……………… of the blind. He himself was blind from the age of three and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked ability in both science and (3) ………………, he became famous in Paris an organist and violoncellist. In 1826 Braille began (4) ……………… the blind in institute. Braille is known for his idea of modifying the Barbier “point writing” system, used for coded army messages to enable the blind to read. Point writing consists of embossed dots and dashes on cardboard; the Braille system derived from it is used (5) ……………… today, in slightly modified form, and (6) ……………… many countries.

1. A. is born                            B. was born                       C. bears                              D. bore 

2. A. principal                         B. customer                       C. engineer                        D. teacher

3. A. music                             B. mathematics                  C. foreign language           D. literature

4. A. teach                              B. to teach                         C. teaching                        D. taught 

5. A. succeed                          B. success                          C. successful                      D. successfully 

6. A. on                                  B. in                                   C. at                                   D. over

Đúng(0)
NM
Nguyễn Minh Thư
25 tháng 11 2021
Exercise 2: Read the paragraph below. Then do the tasks that follow.                Louis Braille was born in 1809 in Coupvray. He was a French teacher of the blind. He himself was blind from the age of thee. In 1818 he was a foundling (trẻ bỏ rơi) in the National Institute for the Young Blind in Paris (NIYBP). Soon showing marked ability in both science and music, he became famous in Paris as an organist and violoncellist. In 1826 Braille began teaching the blind in the institute. Braille...
Đọc tiếp

Exercise 2: Read the paragraph below. Then do the tasks that follow.

                Louis Braille was born in 1809 in Coupvray. He was a French teacher of the blind. He himself was blind from the age of thee. In 1818 he was a foundling (trẻ bỏ rơi) in the National Institute for the Young Blind in Paris (NIYBP). Soon showing marked ability in both science and music, he became famous in Paris as an organist and violoncellist. In 1826 Braille began teaching the blind in the institute. Braille is known for his idea modifying the Barrier “point writing” system, used for coded army messages, to enable the blind to read. Point writing consists of dots and dashes on cardboard; the Braille system derived from it is used successfully today in many countries.

 

Task 1: Match one word in A with its definition in B.

A

B

1. blind

2. ability

3. marked

4. institute

5. consist of

6. foundling

7. derive

  a. be formed from the things or people mentioned.

  b. to come or develop from sth.

  c. unable to see.

  d. a baby who has been left by its parents and who is found and taken care of by sb else.

  e. clear; noticeable; easily seen.

  f. the mental or physical capacity, power or skill required to do sth.

  g. an organization that has a particular purpose, especially one that is connected with education

      or a particular profession.

 

Task 2: Decide whether the statements below are true (T) or false (F).

1. _________       Louis Braille was an engineer.

2. _________       Braille was blind in 1812.

3. _________       Braille studied sciences and music well.

4. _________       Braille invented the Barrier point writing system.

5. _________       The Braille system was used in the French army.

 

Task 3: Answer the questions.

1. When and where was Louis Braille born?

> ……………..................................................................

2. When did he begin teaching the blind in NIYBP?

> ……………..................................................................

3. What did the Braille system derive from?

> ……………..................................................................

4. What was used for coded army messages?

> ……………..................................................................

5. What does the Barrier point writing system consist of?

> ……………..................................................................
#Tiếng anh lớp 10
0
TT
trương tấn thanh
24 tháng 10 2021
IV. READING COMPREHENSION A. Choose the one option - a, b, c or d - that best fits each of the num ­bared blank.Louis Braille was born in 1809 in Coupvray. He was a French (1) .................. of the blind. He (2) …................ was blind from the age of three, and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked (3) .................... in both science and music, he became famous in Paris as an organist and violoncellist. In 1826 Braille began...
Đọc tiếp

IV. READING COMPREHENSION

A. Choose the one option - a, b, c or d - that best fits each of the num ­bared blank.

Louis Braille was born in 1809 in Coupvray. He was a French (1) .................. of the blind. He (2) …................ was blind from the age of three, and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked (3) .................... in both science and music, he became famous in Paris as an organist and violoncellist. In 1826 Braille began teaching the blind in the school . Braille is known for his idea of (4) .................... the Briberies “point writing” system , used for coded army messages, to enable the blind to read. Point writing consists of embossed dots and dashes on cardboard; the Braille system (10) ................... from it is used successfully today, in slightly modified form, and in many countries.

1. a. designer                        b. doctor                           c. teacher                          d. lawyer

2. a. who                               b. whom                           c. himself                          d. for himself

3. a. activity                         b. ability                           c. intelligence                   d. determination

4. a. expressing                     b. learning                        c. bringing                        d. modifying

5. a. made                             b. taken                            c. done                             d. derived
#Tiếng anh lớp 10
1
CB
Collest Bacon
24 tháng 10 2021

Louis Braille was born in 1809 in Coupvray. He was a French (1) .................. of the blind. He (2) …................ was blind from the age of three, and in 1818 he went to the National Institute for the Young Blind in Paris. Soon showing marked (3) .................... in both science and music, he became famous in Paris as an organist and violoncellist. In 1826 Braille began teaching the blind in the school . Braille is known for his idea of (4) .................... the Briberies “point writing” system , used for coded army messages, to enable the blind to read. Point writing consists of embossed dots and dashes on cardboard; the Braille system (10) ................... from it is used successfully today, in slightly modified form, and in many countries.

1. a. designer                        b. doctor                           c. teacher                          d. lawyer

2. a. who                               b. whom                           c. himself                          d. for himself

3. a. activity                         b. ability                           c. intelligence                   d. determination

4. a. expressing                     b. learning                        c. bringing                        d. modifying

5. a. made                             b. taken                            c. done                             d. derived

Đúng(2)
NT
Nguyễn thị Phụng
10 tháng 11 2018
Read the passage and choose the best answers : Louis Braille was born in France in 1809 . His father had a small business . He made shoes and other things from leather . Louis liked to help his father in the store even when he was very small . One day when Louis was 3 years old , he was cutting some leather , suddenly the knife slipped and hit him in the eyes . He soon became completely blind . When he was ten years old , he entered the National Institute for the blind in Paris . One day his...
Đọc tiếp

Read the passage and choose the best answers :

Louis Braille was born in France in 1809 . His father had a small business . He made shoes and other things from leather . Louis liked to help his father in the store even when he was very small . One day when Louis was 3 years old , he was cutting some leather , suddenly the knife slipped and hit him in the eyes . He soon became completely blind .

When he was ten years old , he entered the National Institute for the blind in Paris . One day his class went to visit a speacial exhibit by a captain in the army . One thing in the exhibit was very interesting for Louis . It showed messages in code . Armies send messages in secret codes so no - one else can read them . The captain wrote this code in raised letters on very thick paper .

Louis thought a lot about this code . Then he decided to write in the same way so the blind could " read " with their fingers . It is very difficult to feel the differences between raised letters . Instead of letters , Louis used a " cell " of six dots . He arranged the dots with two dots across and three down . So blind people can read and write even write music by Braille .

1 . It is difficult to feel the differences between ................................

A . arrangements of dots

B . coded messages

C . raised letters

D . a system of raised dots

2 . Louis Braille's father made things from .............................

A . codes

B . exhibit

C. leather

D . wood

3 . Which of these sentences is probably not true ?

A . Braille invented a system of reading for blind people .

B . Braille system is used for everyone .

C . Braille visited an exhibit of codes

D . Braille was an intelligent boy .

4 . When Louis was ten years old , he began to study ......................................

A . at a local school

B . at a special school for the blind .

C . in the army

D . at a university .
#Tiếng anh lớp 10
1
BL
Bình Lê
10 tháng 11 2018

Read the passage and choose the best answers:

Louis Braille was born in France in 1809 . His father had a small business . He made shoes and other things from leather . Louis liked to help his father in the store even when he was very small . One day when Louis was 3 years old , he was cutting some leather , suddenly the knife slipped and hit him in the eyes . He soon became completely blind .

When he was ten years old , he entered the National Institute for the blind in Paris . One day his class went to visit a speacial exhibit by a captain in the army . One thing in the exhibit was very interesting for Louis . It showed messages in code . Armies send messages in secret codes so no - one else can read them . The captain wrote this code in raised letters on very thick paper .

Louis thought a lot about this code . Then he decided to write in the same way so the blind could " read " with their fingers . It is very difficult to feel the differences between raised letters . Instead of letters , Louis used a " cell " of six dots . He arranged the dots with two dots across and three down . So blind people can read and write even write music by Braille .

1 . It is difficult to feel the differences between ................................

A . arrangements of dots

B . coded messages

C . raised letters

D . a system of raised dots

2 . Louis Braille's father made things from .............................

A . codes

B . exhibit

C. leather

D . wood

3 . Which of these sentences is probably not true ?

A . Braille invented a system of reading for blind people .

B . Braille system is used for everyone .

C . Braille visited an exhibit of codes

D . Braille was an intelligent boy .

4 . When Louis was ten years old , he began to study ......................................

A . at a local school

B . at a special school for the blind .

C . in the army

D . at a university .

Đúng(1)
LQ
Lê Quỳnh Anh
11 tháng 4 2017

Choose the best answer. When he ______ ten years old, Louis Braille ________ the National Institute for the Blind in Paris.

A. Was/ entered

B. Was/was entering

C. Was/was entered

D. Was/would enter
#Tiếng anh thí điểm lớp 11
1
DH
Dương Hoàn Anh
11 tháng 4 2017

Đáp án: A

Ta thấy “ten years old” (năm 10 tuổi) là thời điểm trong quá khứ và không còn liên quan gì đến hiện tại => động từ chia thì quá khứ đơn: S + Ved/V2

=> When he was ten years old, Louis Braille entered the National Institute for the Blind in Paris.

Tạm dịch: Khi ông lên mười tuổi, Louis Braille đã vào Viện người mù quốc gia ở Paris.

Đúng(0)
QD
Quỳnh Diễm
27 tháng 11 2018
The New York Institution for the blind was (1).............in 1831, about five years after Louis Braille had developed system of writing for the (2)...........It was one of the first schools in the United States to provide an (3)............program for children who were blind or mentally impaired. Early in the twentieth century the name was (4)............to The New York Institute for Special Education to better reflect the program's expanded focus and commitment to children with a variety of...
Đọc tiếp

The New York Institution for the blind was (1).............in 1831, about five years after Louis Braille had developed system of writing for the (2)...........It was one of the first schools in the United States to provide an (3)............program for children who were blind or mentally impaired. Early in the twentieth century the name was (4)............to The New York Institute for Special Education to better reflect the program's expanded focus and commitment to children with a variety of (5).............

1.a.discovered b.founded c.located d.provided

2.a.deaf b.blind c.mute d.disable

3.a.educated b.educating c.education d.educational

4.a.renamed b.adjusted c.changed d.developed

5.a.impairments b.injuries c.handicaps d.disabilities
#Tiếng anh lớp 12
1
NC
Nguyễn Công Tỉnh
27 tháng 11 2018

The New York Institution for the blind was (1).............in 1831, about five years after Louis Braille had developed system of writing for the (2)...........It was one of the first schools in the United States to provide an (3)............program for children who were blind or mentally impaired. Early in the twentieth century the name was (4)............to The New York Institute for Special Education to better reflect the program's expanded focus and commitment to children with a variety of (5).............

1.a.discovered b.founded c.located d.provided

2.a.deaf b.blind c.mute d.disable

3.a.educated b.educating c.education d.educational

4.a.renamed b.adjusted c.changed d.developed

5.a.impairments b.injuries c.handicaps d.disabilities

Đúng(0)
PN
Phụng Nguyễn Thị
21 tháng 10 2018
Choose the correct words to complete the passage . The New York Institution for the Blind was ( 1) ............... in 1831 , about five years after Louis Braille had developed system of writing for the ( 2 ) ............... . It was one of the first schools in the United States to provide an ( 3 ) ............... program for children who were blind or ( 4 ) .................. impaired . 1. A . discovered B . founded C . located D . provided 2. A . deaf B . blind C . mute D . disabled 3. A...
Đọc tiếp

Choose the correct words to complete the passage .

The New York Institution for the Blind was ( 1) ............... in 1831 , about five years after Louis Braille had developed system of writing for the ( 2 ) ............... . It was one of the first schools in the United States to provide an ( 3 ) ............... program for children who were blind or ( 4 ) .................. impaired .

1. A . discovered B . founded C . located D . provided

2. A . deaf B . blind C . mute D . disabled

3. A . educated B . educating C . education D. educational

4. A . visually B . mentally C . hearing D . badly

HELP ME !!!!!!!!!!
#Tiếng anh lớp 10
2
NN
Ngố ngây ngô
21 tháng 10 2018

1. B

2. B

3. C

4. A

Đúng(0)
NT
Nguyễn Thị Ngọc Thơ
21 tháng 10 2018

Choose the correct words to complete the passage .

The New York Institution for the Blind was ( 1) ............... in 1831 , about five years after Louis Braille had developed system of writing for the ( 2 ) ............... . It was one of the first schools in the United States to provide an ( 3 ) ............... program for children who were blind or ( 4 ) .................. impaired .

1. A . discovered B . founded C . located D . provided

2. A . deaf B . blind C . mute D . disabled

3. A . educated B . educating C . education D. educational

4. A . visually B . mentally C . hearing D . badly

Đúng(0)
PN
Phạm Ngọc Diễm
21 tháng 4 2018
1/ Use the correct form of the words in brakets to complete the following passage. Le Van Thiem - the founder of contemporary mathematics in Viet Nam Le van Thiem was born in 1918 in Ha Tinh, Viet Nam , in an intellectual family. He was the (young)______ of 13 brothers and sisters. He was the first Vietnamese to earn a "modern" doctoral degree. In 1939, after passing the final examinations with excellent marks, Le van Thiem was offered a scholarship to study in Paris, France. His...
Đọc tiếp

1/ Use the correct form of the words in brakets to complete the following passage.

Le Van Thiem - the founder of contemporary mathematics in Viet Nam

Le van Thiem was born in 1918 in Ha Tinh, Viet Nam , in an intellectual family. He was the (young)______ of 13 brothers and sisters. He was the first Vietnamese to earn a "modern" doctoral degree. In 1939, after passing the final examinations with excellent marks, Le van Thiem was offered a scholarship to study in Paris, France. His (contribute)__________ in Paris placed him among the best young (research)_________ in mathematics in the 1940s

In 1949, he returned to Viet Nam to take part in our country's struggle for (independent)______________. In 1951, he founded a teacher training college and a college of fundamental sciences in Viet Bac with the aim of providing the country with qualified teachers and (technique)____________

After 1954 he was the first director of Viet Nam Institute of Mathematics, the first Headmaster of Ha Noi National University of Education and Ha Noi University of Science. Together with other (mathematics)____________, such as Hoang Tuy, Ta Quang Buu, Professor Le Van Thiem founded two Vietnamese (mathematics)____________ research journals in foreign languages, and he was also one of the (found)_______ of the journal "Mathematics and Youth''. He died in 1991 in Ho Chi Minh City

MẤY BN ƠI GIÚP MK VS !!!!!!!!!!! MK ĐG CẦN GẤP LẮM!!!!! HELP MEEEEEEEEE!!!!!!
#Tiếng anh lớp 8
1
K
Komorebi
21 tháng 4 2018

1/ Use the correct form of the words in brakets to complete the following passage.

Le Van Thiem - the founder of contemporary mathematics in Viet Nam

Le van Thiem was born in 1918 in Ha Tinh, Viet Nam , in an intellectual family. He was the (young) youngest of 13 brothers and sisters. He was the first Vietnamese to earn a "modern" doctoral degree. In 1939, after passing the final examinations with excellent marks, Le van Thiem was offered a scholarship to study in Paris, France. His (contribute) contribution in Paris placed him among the best young (research) researcher in mathematics in the 1940s

In 1949, he returned to Viet Nam to take part in our country's struggle for (independent) independence . In 1951, he founded a teacher training college and a college of fundamental sciences in Viet Bac with the aim of providing the country with qualified teachers and (technique) technicians

After 1954 he was the first director of Viet Nam Institute of Mathematics, the first Headmaster of Ha Noi National University of Education and Ha Noi University of Science. Together with other (mathematics) mathematicians , such as Hoang Tuy, Ta Quang Buu, Professor Le Van Thiem founded two Vietnamese (mathematics) mathematicians research journals in foreign languages, and he was also one of the (found) founders of the journal "Mathematics and Youth''. He died in 1991 in Ho Chi Minh City

Đúng(0)
PN
Phạm Ngọc Diễm
21 tháng 4 2018
1/ Use the correct form of the words in brakets to complete the following passage. Le Van Thiem - the founder of contemporary mathematics in Viet Nam Le van Thiem was born in 1918 in Ha Tinh, Viet Nam , in an intellectual family. He was the (young)______ of 13 brothers and sisters. He was the first Vietnamese to earn a "modern" doctoral degree. In 1939, after passing the final examinations with excellent marks, Le van Thiem was offered a scholarship to study in Paris, France. His...
Đọc tiếp

1/ Use the correct form of the words in brakets to complete the following passage.

Le Van Thiem - the founder of contemporary mathematics in Viet Nam

Le van Thiem was born in 1918 in Ha Tinh, Viet Nam , in an intellectual family. He was the (young)______ of 13 brothers and sisters. He was the first Vietnamese to earn a "modern" doctoral degree. In 1939, after passing the final examinations with excellent marks, Le van Thiem was offered a scholarship to study in Paris, France. His (contribute)__________ in Paris placed him among the best young (research)_________ in mathematics in the 1940s

In 1949, he returned to Viet Nam to take part in our country's struggle for (independent)______________. In 1951, he founded a teacher training college and a college of fundamental sciences in Viet Bac with the aim of providing the country with qualified teachers and (technique)____________

After 1954 he was the first director of Viet Nam Institute of Mathematics, the first Headmaster of Ha Noi National University of Education and Ha Noi University of Science. Together with other (mathematics)____________, such as Hoang Tuy, Ta Quang Buu, Professor Le Van Thiem founded two Vietnamese (mathematics)____________ research journals in foreign languages, and he was also one of the (found)_______ of the journal "Mathematics and Youth''. He died in 1991 in Ho Chi Minh City

MẤY BN ƠI GIÚP MK VS !!!!!!!!!!! MK ĐG CẦN GẤP LẮM!!!!! HELP MEEEEEEEEE!!!!!!
#Tiếng anh thí điểm lớp 8
1
TD
Tử Đằng
8 tháng 5 2018

1/ Use the correct form of the words in brakets to complete the following passage.

Le Van Thiem - the founder of contemporary mathematics in Viet Nam

Le van Thiem was born in 1918 in Ha Tinh, Viet Nam , in an intellectual family. He was the (young)___YOUNGEST___ of 13 brothers and sisters. He was the first Vietnamese to earn a "modern" doctoral degree. In 1939, after passing the final examinations with excellent marks, Le van Thiem was offered a scholarship to study in Paris, France. His (contribute)_____CONTRIBUTION_____ in Paris placed him among the best young (research)_____RESEACHER____ in mathematics in the 1940s

In 1949, he returned to Viet Nam to take part in our country's struggle for (independent)______INDEPENDENCE________. In 1951, he founded a teacher training college and a college of fundamental sciences in Viet Bac with the aim of providing the country with qualified teachers and (technique)_____TECHNICIANS_______

After 1954 he was the first director of Viet Nam Institute of Mathematics, the first Headmaster of Ha Noi National University of Education and Ha Noi University of Science. Together with other (mathematics)____MATHEMATICIANS________, such as Hoang Tuy, Ta Quang Buu, Professor Le Van Thiem founded two Vietnamese (mathematics)_____MATHEMATICIANS_______ research journals in foreign languages, and he was also one of the (found)___FOUNDERS____ of the journal "Mathematics and Youth''. He died in 1991 in Ho Chi Minh City

Đúng(0)
Bảng xếp hạng
Tất cả Toán Vật lý Hóa học Sinh học Ngữ văn Tiếng anh Lịch sử Địa lý Tin học Công nghệ Giáo dục công dân Âm nhạc Mỹ thuật Tiếng anh thí điểm Lịch sử và Địa lý Thể dục Khoa học Tự nhiên và xã hội Đạo đức Thủ công Quốc phòng an ninh Tiếng việt Khoa học tự nhiên
  • Tuần
  • Tháng
  • Năm
Các khóa học có thể bạn quan tâm
Tổng thanh toán: 0đ (Tiết kiệm: 0đ)
Tới giỏ hàng
Yêu cầu VIP