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?

A Water.

B Lunar soil.

C Stone.

D Plastic.

解析：选B。B 细节理解题。第一段明确提到“It can print objects using only lunar soil”，由此可知，使用的是月球土壤。故选B。

2.2. What gathers up the sun’s heat for the machine?

A A special mirror.

B A battery.

C A wire.

D A computer.

解析：选A。A 细节理解题。第二段提到“A special mirror collects the sun’s heat”，即这是机器收集热量的部件。故选A。

3.3. What does the underlined word “It” refer to?

A The mirror.

B The test.

C The machine.

D The wire.

解析：选C。C 词意指代题。第三段中划线词所在句的前一句提到“The machine saves money and time.”这台机器的运作节省了时间和金钱，划线词所在句承接前一句，由此可知“It”指代的是这台机器。故选C。

4.4. Where did the scientists test the machine?

A On the moon.

B In space.

C On Earth.

D In water.

解析：选C。C 细节理解题。第四段直接提到“Scientists tested it on Earth”科学家们在地球上测试了这台机器。故选C。

5.5. What will the machine help people do?

A Live on Earth better.

B Explore the moon.

C Build houses on Mars.

D Study the sun.

解析：选B。B 细节理解题。最后一段中的“It will help people explore the moon better”表明，这台机器可以帮助人们更好地探测月球。故选B。