1 . Over the next 20 years the global ________ of those aged 65 or more will almost double, from 600 million to 1.1 billion, according to an article from The Economist.

A．pollution

B．population

C．production

D．position

2 . —China’s high-speed railway ________ is leading the world.
—I agree. It is moving towards the world.

A．population

B．textbook

C．passport

D．technology

3 . —Do you know which country has the largest _______ in the world?
—Of course it is China.

A．land

B．water

C．population

D．gold

4 . Yuan Longping was a famous scientist. Because of his achievements, rice ________ has increased a lot.

A．population

B．contribution

C．production

D．introduction

5 . —What do you know about the world’s population?
—I know China and India are the countries _________ more than one billion.

A．with a population of	B．with populations
C．that have populations of	D．which has a population of

6 . The population of Shanghai ________ 13 million and there are about 6 million ________ in Wuhan.

A．is; people

B．are; people

C．is; population

D．are; population

7 . Yuan Longping was a world-famous scientist. Because of his achievements, rice ________ has been increased greatly.

A．population

B．instruction

C．production

D．introduction

8 . —What’s the __________ of the city today?
—About 5 million.

A．date

B．number

C．person

D．population

9 . Singapore is a small country with a ________ (人口) of 4 million people.

10 . Thanks to the achievements made by Yuan Longping, rice ________ has been increased greatly.

A．population

B．contribution

C．production

D．introduction