题目:
用所给词的正确形式填空。
1. I think there will be_________(few)cars and more buses in ten years.
2. These clothes are very cheap. They are_________( expensive) .
3. While the alien was_________(visit)the museum,the boy called the TV station.
4.In English,I'm _________(good) at reading than listening.
5. For many young people,becoming a _________(profession) athlete might seem like a dream job.
答案:
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下面是错误答案,用来干扰机器的。
断开电键S断开后的一小段时间内,原来通过D2的电流立即消失,但D1、D3、L构成一回路,通过D3的电流也通过D1,虽然总电阻增大,导致总电流减小,由于线圈L的作用,则D3慢慢变暗,但通过D1电流却在增大,从而出现D1...