题目内容：

    Anything made of plastic or metal can be 3D printed nowadays — bicycles, toys, tools... even replacement body parts! But the latest trend in 3D printing may be food. Scientists and chefs are putting their heads together to create printed food.

Several 3D printers designed for food are now on the market. Anything that can be made into a soft wet mixture can be squeezed (挤压) from a tube in a 3D printer. Instead of ink, these printers can use fruits, vegetables, proteins, sweets, and more. This makes for lots of combinations that can be healthy, yummy, and even artistic.

Most 3D printers don’t actually cook the food, at least not yet. Engineers at Columbia University’s Creative Machines Lab invented an oven (烤箱) that cooks 3D-printed pizza with laser beams (激光束). A special computer program controls the lasers, heating each part of the pizza to perfection. Unlike regular ovens, lasers can carefully cook each thin piece of 3D-printed food.

In the future, food can be made with a 3D printer to meet our needs. For example, a hospital could design meals to meet patients’ dietary needs. Vitamins, minerals, and even medicines can be mixed right in. A 3D printer can make food appealing. Foods that someone may not like might be more attractive after 3D printing. Maybe that food you dislike wouldn’t seem so bad if it looked like a castle!

The idea of 3D printed food may seem very modern. In fact, NASA (美国国家航空航天局) has been researching the topic for more than ten years. On a long travel, it’s important to have food that is easy to make, tastes good, and has the nutrients astronauts need to stay healthy. Printing food on demand may soon be into the space!

1.What will be the latest trend in 3D printing?

A.3D printed bicycles.

B.3D-printed toys.

C.3D-printed food.

D.3D-printed body parts.

2.What is special about the laser oven?

A.It is invented by students at Columbia University.

B.It is made from strong laser beams.

C.It can make 3D-printed food carefully.

D.It can cook each part of 3D printed food perfectly.

3.What does the underlined word “appealing” in paragraph 4 mean?

A.Attractive.

B.Fresh.

C.Healthy.

D.Terrible.

4.What can be the best title for the text?

A.Anything Can Be 3D Printed

B.3D Printing: the Future of Food

C.NASA’s New Research

D.How to Cook 3D Printed Pizza