【判断题】裁判鸣哨后,8秒钟之内,发起者应将球击出
【简答题】按要求做题。 1. I’ve been skating for 2 years. (变为一般疑问句) You for 2 years ? 2. He has been living here since he was born. (就画线部分提问) he here?
【单选题】Which of the following did they not spot when they took a three-mile hike around Lake Duluti?
D.
large, noisy birds with wings that make a whoosh-whoosh-whoosh sound as they fly
【单选题】电流互感器是将( )中的电流或低压系统中的大电流改变为低压的标准的小电流