同一电路，电阻既有（），又有（），叫电阻的混联电路。
参考答案：串联，并联
写出下列城市的时间。
1. It's _____ o'clock. 2. It's _____ o'clock.
根据首字母提示补全对话。
A: Hello, Li Ming.
B: Hello, Jenny. H_____________ are you?
A: I'm fine, thanks, A_____________ you?
B: I'm fine, too. T_____________ is May. S_____________ is my friend.
A: N_____________ to meet you, May.
C: Nice to meet vou.
