What is the author's main purpose in writing this passage?
A.To explain the concept of labor.
B.To criticize certain uses of capital.
C.To contrast capital goods and consumer goods.
D.To define economic resources.

The word “inferior” in the passage is closest in meaning to .
A.modern
B.low-quality
C.well-equipped
D.unsafe

What does the word “that” in the passage refer to?
A.males
B.native Americans
C.the risk
D.African-Americans

Which of the following is NOT mentioned as a reason for a higher accident rate among the poor?
A.Little knowledge about safety.
B.Inadequate medical services.
C.Poor housing and working conditions.
D.Use of cars which incorporate fewer safety features.

The writer says that in the past .
A.people didn't invent many things
B.people didn't want to use wheels
C.most inventions were to do with farming
D.it took time for new ideas to change things

Why does the writer use the example of the aeroplane?
A.To explain why transport changed in the 20th century.
B.Because he thinks It's the most important invention in history.
C.To explain how space travel started.
D.To show how an invention developed quickly.

What does the writer say about the future of communication?
A.We can't know what the most popular social media will be.
B.Microchips will become faster.
C.We won't use the internet as much.
D.We won't need devices like smartphones.

What does the writer say about space solar power?
A.It's an old idea, but people are only starting to develop it now.
B.It's a science fiction idea, and nobody really thinks it will work.
C.It's much easier to build a solar power station in space than on Earth.
D.People tried it in 1941, but they didn't succeed.

What are industrial robots like?
A.They behave like humans.
B.They controlled machinery.
C.They look like humans.
D.They are computer-controlled machines.

The passage is mainly concerned with .
A.bony flatfish
B.evolution asymmetrical
C.symmetrical flatfish
D.different types of flatfish