【简答题】Track4-3 Scientists and designers at Cornell University in the United States are working on fashion’s next big thing: “wearable technology.” These clothes do many different things, and some already ex...
【简答题】Nancy has taught a 1 ______of ages of children, for example, 3-year-olds and preschool children and fifth, fourth and first grade at the elementary level. What is stressful about her job is that child...