ADSL技术主要解决的问题是( )。
A．宽带传输
B．多媒体综合网络
C．宽带交换
D．宽带接入
参考答案：D
试论在电视新闻专题中解说词的多种表现功能及如何协调解说词与画面、同期声的关系。
Two weeks ago, I bought a bicycle. If you live in town, it is often faster than a car and you worry about parking.
A．must not
B．should not
C．don't have to
D．may not
