The part of body:head,..............
Split the number 678 into three parts. If the first part and the second part are in the ratio of 5:7; the second part and the third part are in the ratio of 3:11
then the value of the second part is
QUESTION 5: Choose the different sound of the underlined part *
QUESTION 6: Choose the different sound of the underlined part *
QUESTION 7: Choose the different sound of the underlined part *
QUESTION 1: Choose the different sound of the underlined part *
QUESTION 2: Choose the different sound of the underlined part *
QUESTION 3: Choose the different sound of the underlined part *
QUESTION 4: Choose the different sound of the underlined part *
Class A and Class B have the same number of students.
-The number of students in class A who took part in a mathematics competition is \(\frac{1}{3}\) of the studentsin Class B who did not take part.
-the number of students in class B who took part in a mathematics competition is \(\frac{1}{5}\)of the students in class A who đi not take part.
Find the ratio of the number of students in class A who did not take part in this competition to the number of students in class B who did not take part.
I call the number of students didn't take part in Mathemas Competition in class A & B are a & b respectively
(with condition: a & b \(\in\)N*)
,From the theme, we have: \(\frac{1}{3}b+a=\frac{1}{5}a+b\)(Because rhe number of students in 2 class is the same)
\(\Leftrightarrow\frac{b}{3}-b+a-\frac{a}{5}=0\Leftrightarrow\left(-\frac{2b}{3}\right)+\frac{4a}{5}=0\)
\(\Leftrightarrow\frac{4a}{5}-\frac{2b}{3}=0\Leftrightarrow\frac{12a-10b}{15}=0\Leftrightarrow12a=10b\)
\(\Rightarrow\frac{a}{b}=\frac{10}{12}=\frac{5}{6}\)
So the ratio of the number of student didn't take part of Class A & B is \(\frac{5}{6}.\)
Read part 2 of the article. Why is Apollo 13 mission described as a 'successful failure'? Rewrite the underlined clauses in part 2 as participle clauses.
1 ... fitted with its own oxygen tank...
PART 2
The astronauts left the main part of the spaceship and went inside the lunar module, 1which had been fitted with its own oxygen tank. But inside the smaller module, 2which was designed to hold only two people, carbon dioxide levels started rising. The astronauts, 3 who had been following instructions from the ground crew, made special filters out of plastic bags and cardboard. Then they waited in the cold and dark while the ground crew, 4 who were working 24 hours a day, tried to work out a way to bring them home. If some people in America were losing interest in the Space Program, the Apollo 13 crisis, 5 which was discussed on all the TV news programmes, changed all that. The astronauts 6 who were risking their lives and the people 7 who were trying to save them all became national heroes - especially when Apollo 13 returned safely to Earth with all three astronauts alive.
2 which was designed to hold only two people
=> designed to hold only two people
(được thiết kế để chỉ chứa hai người)
3 who had been following instructions from the ground crew
=> following instructions from the ground crew
(làm theo hướng dẫn của nhân viên mặt đất)
4 who were working 24 hours a day
=> working 24 hours a day
(làm việc 24 giờ một ngày)
5 which was discussed on all the TV news programmes
=> discussed on all the TV news programmes
(được thảo luận trên tất cả các chương trình tin tức truyền hình)
6 who were risking their lives
=> risking their lives
(mạo hiểm tính mạng của họ)
7 who were trying to save them
=> trying to save them
(cố gắng cứu họ)
The Apollo 13 mission is often described as a 'successful failure' because while the mission did not achieve its primary goal of landing on the moon, the mission became a triumph of human ingenuity and teamwork in the face of crisis. Despite the explosion that damaged the spacecraft and the many challenges faced by the crew and the ground crew during the mission, all three astronauts returned safely to Earth, thanks to the remarkable efforts of everyone involved.
(Sứ mệnh Apollo 13 thường được mô tả là một "thất bại thành công" bởi vì mặc dù sứ mệnh không đạt được mục tiêu chính là hạ cánh trên mặt trăng, nhưng sứ mệnh này đã trở thành một chiến thắng của sự khéo léo của con người và tinh thần đồng đội khi đối mặt với khủng hoảng. Bất chấp vụ nổ làm hỏng tàu vũ trụ và nhiều thách thức mà phi hành đoàn và nhân viên mặt đất phải đối mặt trong nhiệm vụ, cả ba phi hành gia đã trở về Trái đất an toàn nhờ những nỗ lực đáng kể của mọi người tham gia.)
Part 3: Read the following sentences about the different forms of energy available. Match the sentences in Part One with correct sentences in Part Two. (10 points)
PART ONE
0. Muscles and wood were the first sources of energy used by early man.
1. Coal made the Industrial Revolution in the nineteenth century possible.
2. Today we depend on oil more than any other fuels.
3. Gas is considered as a “mineral” because, together with coal, it is part of the earth’s crust.
4. Hydroelectric power is used to produce electricity.
5. Geothermal energy is produced from the heat stored in the earth’s core.
6. The wind was used as a power source over 1,300 years ago in Persia when the first windmill was built to return a millstone.
7. Waves have enormous power.
8. Incoming tides can be trapped behind a dam across a bay or an estuary.
9. A huge amount of solar energy reaches the earth’s outer atmosphere.
10. Nuclear fuels, such as uranium-235 and plutonium, can be made to produce immense heat by a process called “fission”.
PART TWO
Like oil, it is a fossil fuel and is thus a non-renewable source of energy.
One danger, however, is in getting rid of the radioactive wastes which are produced.
They increase and decrease more slowly than the wind, thus making them easier to use as a source of energy.
It was the first fossil fuel to be used to power machinery.
However, it is thinly spread, and collecting it in countries like Britain and northern Europe is still difficult and expensive.
It is used as a fuel in cars, ships and aeroplanes, and even in rockets.
It is produced by the fall of water trapped in a dam.
It took thousands of years to progress to using coal on a large scale.
This internal heat helps to produce geysers and steam springs and can be used to generate eletricity in countries like New Zealand.
The water is then allowed to flow out past water wheels as the tide goes out.
For morden purposes, however, it is necessary to build a machine which can store the energy obtained for use on calm days.
Example: 0 – H
1........ 2. ....... 3......... 4......... 5........
6…… 7……. 8….… 9……. 10…..
Part 3: Read the following sentences about the different forms of energy available. Match the sentences in Part One with correct sentences in Part Two. (10 points)
PART ONE
0. Muscles and wood were the first sources of energy used by early man.
1. Coal made the Industrial Revolution in the nineteenth century possible.
2. Today we depend on oil more than any other fuels.
3. Gas is considered as a “mineral” because, together with coal, it is part of the earth’s crust.
4. Hydroelectric power is used to produce electricity.
5. Geothermal energy is produced from the heat stored in the earth’s core.
6. The wind was used as a power source over 1,300 years ago in Persia when the first windmill was built to return a millstone.
7. Waves have enormous power.
8. Incoming tides can be trapped behind a dam across a bay or an estuary.
9. A huge amount of solar energy reaches the earth’s outer atmosphere.
10. Nuclear fuels, such as uranium-235 and plutonium, can be made to produce immense heat by a process called “fission”.
PART TWO
a. Like oil, it is a fossil fuel and is thus a non-renewable source of energy.
b. One danger, however, is in getting rid of the radioactive wastes which are produced.
c. They increase and decrease more slowly than the wind, thus making them easier to use as a source of energy.
d. It was the first fossil fuel to be used to power machinery.
e. However, it is thinly spread, and collecting it in countries like Britain and northern Europe is still difficult and expensive.
f. It is used as a fuel in cars, ships and aeroplanes, and even in rockets.
g. It is produced by the fall of water trapped in a dam.
h. It took thousands of years to progress to using coal on a large scale.
I.This internal heat helps to produce geysers and steam springs and can be used to generate eletricity in countries like New Zealand.
j. The water is then allowed to flow out past water wheels as the tide goes out.
k. For morden purposes, however, it is necessary to build a machine which can store the energy obtained for use on calm days.
Example: 0 – H
1........ 2. ....... 3......... 4......... 5........
6…… 7……. 8….… 9……. 10…..
Part 3: Read the following sentences about the different forms of energy available. Match the sentences in Part One with correct sentences in Part Two. (10 points)
PART ONE
0. Muscles and wood were the first sources of energy used by early man.
1. Coal made the Industrial Revolution in the nineteenth century possible.
2. Today we depend on oil more than any other fuels.
3. Gas is considered as a “mineral” because, together with coal, it is part of the earth’s crust.
4. Hydroelectric power is used to produce electricity.
5. Geothermal energy is produced from the heat stored in the earth’s core.
6. The wind was used as a power source over 1,300 years ago in Persia when the first windmill was built to return a millstone.
7. Waves have enormous power.
8. Incoming tides can be trapped behind a dam across a bay or an estuary.
9. A huge amount of solar energy reaches the earth’s outer atmosphere.
10. Nuclear fuels, such as uranium-235 and plutonium, can be made to produce immense heat by a process called “fission”.
PART TWO
a. Like oil, it is a fossil fuel and is thus a non-renewable source of energy.
b. One danger, however, is in getting rid of the radioactive wastes which are produced.
c. They increase and decrease more slowly than the wind, thus making them easier to use as a source of energy.
d. It was the first fossil fuel to be used to power machinery.
e. However, it is thinly spread, and collecting it in countries like Britain and northern Europe is still difficult and expensive.
f. It is used as a fuel in cars, ships and aeroplanes, and even in rockets.
g. It is produced by the fall of water trapped in a dam.
h. It took thousands of years to progress to using coal on a large scale.
I.This internal heat helps to produce geysers and steam springs and can be used to generate eletricity in countries like New Zealand.
j. The water is then allowed to flow out past water wheels as the tide goes out.
k. For morden purposes, however, it is necessary to build a machine which can store the energy obtained for use on calm days.
Example: 0 – H
1........ 2. ....... 3......... 4......... 5........
6…… 7……. 8….… 9……. 10…..
Part 3: Read the following sentences about the different forms of energy available. Match the sentences in Part One with correct sentences in Part Two. (10 points)
PART ONE
0. Muscles and wood were the first sources of energy used by early man.
1. Coal made the Industrial Revolution in the nineteenth century possible.
2. Today we depend on oil more than any other fuels.
3. Gas is considered as a “mineral” because, together with coal, it is part of the earth’s crust.
4. Hydroelectric power is used to produce electricity.
5. Geothermal energy is produced from the heat stored in the earth’s core.
6. The wind was used as a power source over 1,300 years ago in Persia when the first windmill was built to return a millstone.
7. Waves have enormous power.
8. Incoming tides can be trapped behind a dam across a bay or an estuary.
9. A huge amount of solar energy reaches the earth’s outer atmosphere.
10. Nuclear fuels, such as uranium-235 and plutonium, can be made to produce immense heat by a process called “fission”.
PART TWO
Like oil, it is a fossil fuel and is thus a non-renewable source of energy.
One danger, however, is in getting rid of the radioactive wastes which are produced.
They increase and decrease more slowly than the wind, thus making them easier to use as a source of energy.
It was the first fossil fuel to be used to power machinery.
However, it is thinly spread, and collecting it in countries like Britain and northern Europe is still difficult and expensive.
It is used as a fuel in cars, ships and aeroplanes, and even in rockets.
It is produced by the fall of water trapped in a dam.
It took thousands of years to progress to using coal on a large scale.
This internal heat helps to produce geysers and steam springs and can be used to generate eletricity in countries like New Zealand.
The water is then allowed to flow out past water wheels as the tide goes out.
For morden purposes, however, it is necessary to build a machine which can store the energy obtained for use on calm days.
Example: 0 – H
1........ 2. ....... 3......... 4......... 5........
6…… 7……. 8….… 9……. 10…..