问题
多项选择题
电储能技术主要分为（）等。
A.物理储能
B.电化学储能
C.电磁储能
D.热储能
答案
参考答案：A, B, C
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电储能技术主要分为（）等。
A.物理储能
B.电化学储能
C.电磁储能
D.热储能
参考答案：A, B, C
More and more Americans are going to work by bike. Do you know why more people are 1 bikes to work? We can answer the question in 2 ways. First, bikes don’t need gasoline (汽油), so it takes 3 money to use them. Second, a bike doesn’t 4 much space (空间), so it is 5 to find a place for it. And riding a bike is good for one’s 6 . People often drive their 7 to offices or to shops, but now people think riding bikes is a good way of doing sports. That’s 8 more Americans are now riding to work 9 bike, and they are 10 their own cars at home.
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