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【简答题】
电力电子器件按照器件内部电子与空穴两种载流子参与导电的情况分为：（）、（）和（）三种。
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反馈参考答案：
举一反三
【单选题】When I was younger, I’d often go for _____ drive with some friends, purely for _____ enjoyment of it.
A.
a; an
B.
a; the
C.
the; /
D.
/; the
【简答题】阅读理解。 When I was a child, I often dreamed of the time when I could leave home and escape to the city. We lived on a farm. In the winter especially, we wear quite out off from the outside world. As soo...
【单选题】听力原文： When I was a child, I often dreamed of the time when I could leave home and escape to the city. We lived on a farm. In the winter especially, we were quite cut off from the outside world. As soo...
A.
Staying on the farm.
B.
Leaving home for the city.
C.
Moving to the countryside.
D.
Running away from the school.
【简答题】When I was a boy I was very shy and I often felt (comfort) ______ especially with strangers.
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