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【判断题】
金属封装的三极管，其外壳为发射极A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】Help yourself to the steak, Maggie? （）
A.
Sorry, I‘ve had enough.
B.
Thank you, Helen.
C.
Yes. But it isn‘t cooked well
D.
Help yourself to it, too.
【单选题】听力原文：Help yourself to some fish，please! (5)
A.
I can't help you.
B.
I will help you to eat the fish.
C.
I like eating fish.
D.
Thanks a lot.
【单选题】One of the great changes brought about by the knowledge society is that ______.
A.
the difference between the employee and the employer bas become insignificant
B.
people's traditional concepts about work no longer hold true
C.
most people have to take part-time jobs
D.
people have to change their jobs from time to time
【单选题】Which of the following statements is NOT true according to the passage?
A.
Sciences is different from arts.
B.
Arts require knowledge while sciences require skill.
C.
Arts have got a new meaning today.
D.
Ceramic work is an art.
【简答题】She has been ___________ since losing her job . She work for diffe rent companies for a short time without a permanent contract.
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