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【判断题】
改变直流电动机的极性,可以改变发电机的旋转方向。()A.
正确
B.
错误
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反馈参考答案：
举一反三
【单选题】According to the speaker, how can we improve our image?
A.
By decorating our homes．
B.
By being kind and generous．
C.
By wearing fashionable clothes．
D.
By putting on a little make-up．
【单选题】How can American restaurant chains accelerate their business?
A.
To improve the quality of their products and services.
B.
To raise their share prices with the help of some hedge funds.
C.
To invest more money in advertising especially to children.
D.
To expand their business scope overseas.
【单选题】You can’t imagine what _______ his speech on how to improve our spoken English had on me at that time.
A.
impression
B.
advice
C.
attention
D.
effect
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