Chinese scientists made a new machine. It can print objects using only lunar soil. This machine will build houses and research stations on the moon.

Scientists in Hefei built this special printer. It doesn’t require energy from Earth. It uses sunlight. A special mirror collects the sun’s heat. Wires transfer this heat. The heat melts the moon soil. Then the soil sticks together.

The machine saves money and time. It can make bricks and other shapes.

Scientists tested it on Earth. All tests worked well.

Later, this machine can build roads and buildings on the moon. It will help people explore the moon better. The science lab welcomes scientists from all countries.

1. 1. What does the new machine use to print things?（细节理解）

A    Water.

B    Lunar soil.

C    Stone.

D    Plastic.

2. 2. What gathers up the sun’s heat for the machine?（细节理解）

A    A special mirror.

B    A battery.

C    A wire.

D    A computer.

3. 4. Where did the scientists test the machine?（细节理解）

A    On the moon.

B    In space.

C    On Earth.

D    In water.

4. 5. What will the machine help people do?（细节理解）

A    Live on Earth better.

B    Explore the moon.

C    Build houses on Mars.

D    Study the sun.