3D printing is becoming more and more popular． We are now able to print things such as clothing， musical instruments and even cars． People and businesses are able to create the things they need very quickly and easily by using 3D printers．

    But can you imagine printing food？ Some scientists are trying to change the dining experience completely by doing this． They hope that having a 3D printer in the kitchen will become as common as the blender or microwave． Scientists say that they are easy to use ：you simply have to choose a recipe（食谱） and put the uncooked food "inks" into the printer to make the food you want． This means that it would be very quick and easy to create tasty and healthy meals．

    Using 3D printers to create your meals would also be saving the environment． There would be less need for traditional growing， shipping and packaging steps as food production would be a lot quicker and better． For example， tree leaves and insects could be turned into tasty products! Printing food could also help people who have a swallowing（吞咽）trouble． They could program the printer to print softer kinds of their favorite foods so that they would not have difficulty swallowing them．

    However， some people think that a future of 3D﹣printed food would be a disaster． It could take away many jobs， including those for growing， shipping and packaging food． Imagine a world where there was no need for farming or growing crops and the same tastes and structures could be printed from an uncooked "food ink "． Traditional cafes and restaurants might lose business， too．Also， there are worries about the healthy value of printed food： is it really possible to get what we need from food﹣based "inks" or something like that？

    As we know， cooking and eating together with family and friends has long been a tradition and enjoyable activity． It is hard to imagine a world where the pastime of cooking is dead and meals can be created at the touch of a button．

（1）The second paragraph mainly tells us 　　．

A． we can change our recipes by 3D food printing

B． there are many ways of printing food on the 3D printer

C． 3D food printing has become very common in the kitchen

D． some scientists are trying to make 3D food printing used widely

（2）The writer gives the example in Paragraph 3 in order to 　　．

A． show us how 3D food printing works

B． tell us why we should use 3D food printing

C． help us to know what we can use to print food

D． let us understand when to use 3D food printing

（3）How many disadvantages of 3D food printing are mentioned from the last two paragraphs？　　

A． Two．

B． Three．

C． Four．

D． Five．

（4）What is the writer's opinion about 3D food printing？　　

A． 3D﹣printed food is tasty and necessary．

B． It is difficult to understand 3D food printing．

C． Cooking food is more pleasant than printing food．

D． It is happy to see the change of the dining experience．