内容正文:
Unit 3 Choices
单元素养评估测试卷
I. Grammar and vocabulary
Section A
3D Printing in Food Production
There’s a new frontier in 3D printing that’s beginning to come into focus: food. Over the past few years, researchers (1)_______ (develop) machines that print, cook, and serve foods on a mass scale. And the industry isn’t stopping there.
Food production
With a 3D printer, a cook (2) _______ print complicated chocolate sculptures and beautiful pieces for decoration on a wedding cake. A restaurant in Spain has re-created forms and pieces of food (3)_______ are “exactly the same,” freeing cooks to complete other tasks. In another restaurant, all of the dishes (4)_______ (produce) by 3D printing rather than farm to table are well received among customers.
Sustainability
The global population is expected to grow to 9.6 billion by 2050, and some analysts estimate that food production will need to be raised by 50 percent to maintain current levels. As is known to all, sustainability is (5)_______ people nowadays put great emphasis on. Some experts believe printers could use hydrocolloids (水解胶体) from plentiful renewables like algae (藻类) and grass to replace the familiar ingredients, thus (6)_______ (reduce) fuel use and air pollution.
Nutrition
Future 3D food printers could make processed food much (7)_______ (healthy). A professor at Columbia University said, “Food printing could allow consumers (8)_______ (print) food with individualized nutritional content. So instead of eating a piece of yesterday’s bread from the supermarket, you’d eat something baked just for you on demand.”
Challenges
(9) _______ recent development in 3D food printing, the industry has many challenges to overcome. Currently, most ingredients must be changed to a paste (糊状物) before a printer can use them, and the printing process is quite time-consuming (10)_______ ingredients interact with each other in very complex ways. On top of that, most of the 3D food printers now are restricted