C. It needs no space for the storage of food.
D. It uses renewable materials as sources of food.
48. According to Paragraph 4, 3D-printed food ________.
A. is more available to consumers
B. can meet individual nutritional needs
C. is more tasty than food in supermarkets
D. can keep all the nutrition in raw materials
49. What is the main factor that prevents 3D food printing from spreading widely?
A. The printing process is complicated.
B. 3D food printers are too expensive.
C. Food materials have to be dry.
D. Some experts doubt 3D food printing.
50. What could be the best title of the passage?
A. 3D Food Printing: Delicious New Technology
B. A New Way to Improve 3D Food Printing
C. The Challenges for 3D Food Production
D. 3D Food Printing: From Farm to Table
【答案】46. B
47. D
48. B
49. C
50. A
【解析】本文是一篇科普类短文阅读。文章主要介绍了3D打印技术在食物上的应用取得了进展,但目前仍面临着许多方面的挑战。
46. 推理判断题。根据文章Food production中叙述了没有经验的人可以用3D打印机做出复杂的巧克力雕塑和美丽的婚礼蛋糕,以及餐厅能够用3D打印出所有的菜肴和甜点,从而可以推断出3D打印的优势是节省了做饭的时间和精力。故选B。
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