人们通过广播收听新闻，此时信息的载体是（）。
A、视频
B、声音
C、图像
D、文字
参考答案：B
“±DV”这个符号代表（）
I joined a gym with the help of my daughter two years ago and now I exercise every day. [ ]
A.stick to
B.hold up
C.pick up
D.take on
