In this chapter we will______the magnetic effects of the electric current.

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问题 In this chapter we will______the magnetic effects of the electric current.

选项 A、deal with
B、deal in
C、trade with
D、drop in

答案A

解析 这一单元我们学习电流的磁性。deal with“涉及,处理,安排”;deal in“经营”,trade with“交易,买卖”;drop in“顺便走访”。
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