已知关于的方程有实根，复数，则复数在复平面内的对应点到原点的距离为
The internet has made ____ possible for everyone to talk with friends miles away.
My mind wasn't on what he was saying so I'm afraid I ______ half of it.
--- Can you believe I had to pay 50 yuan for a haircut? -----You should try the barber’sI go. It’s only 10.
One of our rules is that every teacherwear school uniform while attending the school flag-rising ceremony.
Deaf people can't _____,but they can learn how to move their mouths ______they can speak.
的方程
有实根
，复数
，则复数
在复平面内的对应点到原点的距离为
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