听短文,回答问题
Crispy cricket biscuits New Words:
ground-up (磨成粉的);
sustainable (可持续发展的);
flour (粉末);
wheat flour (全麦面粉);
protein (蛋白质);
edible (可食用的);
beetles (甲虫);
grasshoppers (蚂蚱);
cicadas (蝉)
Why do the three UK students use crickets(蟋蟀) to make food?
How many crickets does it take to make 1 kg of flour?
Why do they choose insects rather than animals to make new food? a. Insects are smaller. b. Insects are cheaper. c. Insects are easier to raise. d. Insects give off less greenhouse gases. e. Insects are healthier.
What can we tell from the story?