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【单选题】
____the teacher____at this college last year? Yes, he did.A.
Did, taught
B.
Does, teach
C.
Did, teach
D.
Is, teaching
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【简答题】将L=20mH的电感元件,接在频率f=50Hz的交流电源上,则其感抗大小为()Ω。
【判断题】With credit cards, you can collect points and with points you can get money back or free gifts, so you will come again very soon.
A.
正确
B.
错误
【判断题】When you pack for a four-day trip, take a big suitcase or a heavy backpack with you so you can save money because you can use public transport with ease.
A.
正确
B.
错误
【简答题】You can use any printer if you handle it with care. You can use the one you like. You can use whichever printer ________.
【简答题】You can stay with us. You can play football with Sam. You can _______stay with us _________play football with Sam.
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