Read the passage and choose the best answer.

Clean, Convenient, and Cheap

Big cities like New York and London have a lot of great things. They have museums, parks, shopping centres, and a huge variety of restaurants. However, there are a lot of annoying things in big cities. The most common problems are air pollution and noise.

Traffic is the main cause of air pollution and noise. For example, drivers in New York are famous for honking their horns and shouting. That noise drives many visitors crazy - it even drives a lot of the locals crazy, too. Other big cities have similar problems with their traffic.

City governments have a lot of pressure to solve these problems. The most common solution is public transportation. Public transportation is a form of travel provided by the government. For example, New York's biggest form of public transportation is the subway.

Public transportation helps reduce these problems, but it is not enough. Another solution is bicycle sharing. This is a system that provides cheap bicycles. In cities that have bicycle sharing programmes, there are spots that have parked public bikes. People borrow the bikes and use them. They can drop off the bike at the same spot where they borrowed it, or they can drop it off at another spot.

Bicycle sharing programmes are different in each city. In some cities, the bikes are completely free. They are not even locked. In other cities, you have to pay a small deposit. You get the deposit back when you return the bike. In still other cities, you need to have a membership with the bicycle sharing programme. Once you have a membership with the bicycle sharing programme, you can use a bike at any time you want.

Bicycle sharing is hugely popular all over the world. People love this system because it is cheap, clean, and easy to use. There are bicycle sharing systems in dozens of countries and hundreds of cities. In total, there are more than 530 bicycle sharing systems around the world. and that number is going up all the time.

Which statement is true according to the passage?

Read the passage and choose the best answer.

Make Home A Little Nicer

Some people think that if they don't have a yard, they can't keep a garden. Fortunately, that's not true. For people who live in apartment buildings, there is another option: rooftop gardens.

A rooftop garden is just a garden that you keep on your roof. Rooftop gardens are very popular in cities. Most building roots go to waste - people don't use that space for anything. Putting a garden on your roof is a nice way to turn an empty space into something that is pretty and relaxing.

Rooftop gardens are not a new idea. About 2,600 years ago, people in Ancient Mesopotamia planted rooftop gardens. There were similar gardens in Ancient Rome and Ancient Egypt. These gardens had a very important purpose. Many ancient cities had walls. If an enemy army attacked the city, the people hid behind the walls. The enemy army usually tried to destroy the city's food, so the people in the city kept their gardens on top of their walls. That way, they could continue to grow food.

Today's rooftop gardens don't keep us alive, but they still have nice benefits. Plants absorb heat, so if there are a lot of them on a rooftop, they make the whole building cooler. As a result, people in the building use the air conditioning less, which means they use less electricity. One study said that if every roof in Tokyo had a garden, the city would save more than a million dollars a day on electricity.

Rooftop gardening is harder than regular gardening. Here are a few tips. First of all, be safe. Build a fence around your garden. You don't want the wind to blow plants off your roof. Also, remember that rooftop gardens get more sun. If you have a plant that shouldn't get too much sun. Remember to put it in the shade sometimes.

There are many other things that you need to know before you start a rooftop garden. Do some research and then give a try. You'll make your little part of the city much nicer.

Why did people in ancient cities have rooftop gardens?

Read the passage and choose the best answer.

Make Home A Little Nicer

Some people think that if they don't have a yard, they can't keep a garden. Fortunately, that's not true. For people who live in apartment buildings, there is another option: rooftop gardens.

A rooftop garden is just a garden that you keep on your roof. Rooftop gardens are very popular in cities. Most building roots go to waste - people don't use that space for anything. Putting a garden on your roof is a nice way to turn an empty space into something that is pretty and relaxing.

Rooftop gardens are not a new idea. About 2,600 years ago, people in Ancient Mesopotamia planted rooftop gardens. There were similar gardens in Ancient Rome and Ancient Egypt. These gardens had a very important purpose. Many ancient cities had walls. If an enemy army attacked the city, the people hid behind the walls. The enemy army usually tried to destroy the city's food, so the people in the city kept their gardens on top of their walls. That way, they could continue to grow food.

Today's rooftop gardens don't keep us alive, but they still have nice benefits. Plants absorb heat, so if there are a lot of them on a rooftop, they make the whole building cooler. As a result, people in the building use the air conditioning less, which means they use less electricity. One study said that if every roof in Tokyo had a garden, the city would save more than a million dollars a day on electricity.

Rooftop gardening is harder than regular gardening. Here are a few tips. First of all, be safe. Build a fence around your garden. You don't want the wind to blow plants off your roof. Also, remember that rooftop gardens get more sun. If you have a plant that shouldn't get too much sun. Remember to put it in the shade sometimes.

There are many other things that you need to know before you start a rooftop garden. Do some research and then give a try. You'll make your little part of the city much nicer.

What can rooftop gardens do for a building?

Read the passage and choose the best answer.

Make Home A Little Nicer

Some people think that if they don't have a yard, they can't keep a garden. Fortunately, that's not true. For people who live in apartment buildings, there is another option: rooftop gardens.

A rooftop garden is just a garden that you keep on your roof. Rooftop gardens are very popular in cities. Most building roots go to waste - people don't use that space for anything. Putting a garden on your roof is a nice way to turn an empty space into something that is pretty and relaxing.

Rooftop gardens are not a new idea. About 2,600 years ago, people in Ancient Mesopotamia planted rooftop gardens. There were similar gardens in Ancient Rome and Ancient Egypt. These gardens had a very important purpose. Many ancient cities had walls. If an enemy army attacked the city, the people hid behind the walls. The enemy army usually tried to destroy the city's food, so the people in the city kept their gardens on top of their walls. That way, they could continue to grow food.

Today's rooftop gardens don't keep us alive, but they still have nice benefits. Plants absorb heat, so if there are a lot of them on a rooftop, they make the whole building cooler. As a result, people in the building use the air conditioning less, which means they use less electricity. One study said that if every roof in Tokyo had a garden, the city would save more than a million dollars a day on electricity.

Rooftop gardening is harder than regular gardening. Here are a few tips. First of all, be safe. Build a fence around your garden. You don't want the wind to blow plants off your roof. Also, remember that rooftop gardens get more sun. If you have a plant that shouldn't get too much sun. Remember to put it in the shade sometimes.

There are many other things that you need to know before you start a rooftop garden. Do some research and then give a try. You'll make your little part of the city much nicer.

Why should you build a fence around a rooftop garden?

Read the passage and choose the best answer.

Make Home A Little Nicer

Some people think that if they don't have a yard, they can't keep a garden. Fortunately, that's not true. For people who live in apartment buildings, there is another option: rooftop gardens.

A rooftop garden is just a garden that you keep on your roof. Rooftop gardens are very popular in cities. Most building roots go to waste - people don't use that space for anything. Putting a garden on your roof is a nice way to turn an empty space into something that is pretty and relaxing.

Rooftop gardens are not a new idea. About 2,600 years ago, people in Ancient Mesopotamia planted rooftop gardens. There were similar gardens in Ancient Rome and Ancient Egypt. These gardens had a very important purpose. Many ancient cities had walls. If an enemy army attacked the city, the people hid behind the walls. The enemy army usually tried to destroy the city's food, so the people in the city kept their gardens on top of their walls. That way, they could continue to grow food.

Today's rooftop gardens don't keep us alive, but they still have nice benefits. Plants absorb heat, so if there are a lot of them on a rooftop, they make the whole building cooler. As a result, people in the building use the air conditioning less, which means they use less electricity. One study said that if every roof in Tokyo had a garden, the city would save more than a million dollars a day on electricity.

Rooftop gardening is harder than regular gardening. Here are a few tips. First of all, be safe. Build a fence around your garden. You don't want the wind to blow plants off your roof. Also, remember that rooftop gardens get more sun. If you have a plant that shouldn't get too much sun. Remember to put it in the shade sometimes.

There are many other things that you need to know before you start a rooftop garden. Do some research and then give a try. You'll make your little part of the city much nicer.

What does the word "they" in line 1 of the fourth paragraph refer to?

Read the passage and choose the best answer.

Make Home A Little Nicer

Some people think that if they don't have a yard, they can't keep a garden. Fortunately, that's not true. For people who live in apartment buildings, there is another option: rooftop gardens.

A rooftop garden is just a garden that you keep on your roof. Rooftop gardens are very popular in cities. Most building roots go to waste - people don't use that space for anything. Putting a garden on your roof is a nice way to turn an empty space into something that is pretty and relaxing.

Rooftop gardens are not a new idea. About 2,600 years ago, people in Ancient Mesopotamia planted rooftop gardens. There were similar gardens in Ancient Rome and Ancient Egypt. These gardens had a very important purpose. Many ancient cities had walls. If an enemy army attacked the city, the people hid behind the walls. The enemy army usually tried to destroy the city's food, so the people in the city kept their gardens on top of their walls. That way, they could continue to grow food.

Today's rooftop gardens don't keep us alive, but they still have nice benefits. Plants absorb heat, so if there are a lot of them on a rooftop, they make the whole building cooler. As a result, people in the building use the air conditioning less, which means they use less electricity. One study said that if every roof in Tokyo had a garden, the city would save more than a million dollars a day on electricity.

Rooftop gardening is harder than regular gardening. Here are a few tips. First of all, be safe. Build a fence around your garden. You don't want the wind to blow plants off your roof. Also, remember that rooftop gardens get more sun. If you have a plant that shouldn't get too much sun. Remember to put it in the shade sometimes.

There are many other things that you need to know before you start a rooftop garden. Do some research and then give a try. You'll make your little part of the city much nicer.

According to the passage, which statement is NOT true?

Read the passage and choose the best answer.

Clean, Convenient, and Cheap

Big cities like New York and London have a lot of great things. They have museums, parks, shopping centres, and a huge variety of restaurants. However, there are a lot of annoying things in big cities. The most common problems are air pollution and noise.

Traffic is the main cause of air pollution and noise. For example, drivers in New York are famous for honking their horns and shouting. That noise drives many visitors crazy - it even drives a lot of the locals crazy, too. Other big cities have similar problems with their traffic.

City governments have a lot of pressure to solve these problems. The most common solution is public transportation. Public transportation is a form of travel provided by the government. For example, New York's biggest form of public transportation is the subway.

Public transportation helps reduce these problems, but it is not enough. Another solution is bicycle sharing. This is a system that provides cheap bicycles. In cities that have bicycle sharing programmes, there are spots that have parked public bikes. People borrow the bikes and use them. They can drop off the bike at the same spot where they borrowed it, or they can drop it off at another spot.

Bicycle sharing programmes are different in each city. In some cities, the bikes are completely free. They are not even locked. In other cities, you have to pay a small deposit. You get the deposit back when you return the bike. In still other cities, you need to have a membership with the bicycle sharing programme. Once you have a membership with the bicycle sharing programme, you can use a bike at any time you want.

Bicycle sharing is hugely popular all over the world. People love this system because it is cheap, clean, and easy to use. There are bicycle sharing systems in dozens of countries and hundreds of cities. In total, there are more than 530 bicycle sharing systems around the world. and that number is going up all the time.

What does the passage say about bicycle sharing?