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問題詳情：

As people get old, they may have to give up love for their favorite food.   61   (hope), now the European Union project,  62  (consist) of 550 scientists and experts, is developing 3D-printed “smoothfood”. The idea aims to replace regular meals with softer and  63  (nutritious) ones for those who have difficulty in chewing or digesting, which helps to handle one of the root  64  (cause) of poor nutrition in the elderly. A special 3D food printer can break up such common foods  65  chicken, carrots and fruits into a smooth form and have them  66  (print) into their original appearance. The technique is built on the basis of food products made by the German company Biozoon, which does a similar thing but uses silicon moulds to shape the food instead  67  printing it. So it has the advantage  68  new shapes could be produced daily simply by downloading the relevant programs, rather than having to endlessly change a  69  (collect) of moulds. Until now, however, 3D-printed food  70  (limit) to a few common products like chocolate, cakes, pizzas, steaks, etc.

【回答】

61 Hopefully   62 consisting  63 more nutritious  64 causes      65 as

66. printed     67 of        68 that           69 collection    70. has been limited

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