Yahoo属于网络信息服务中的信息增值服务层。
参考答案：对
词语运用。
1. I felt very ___ ___ (吃惊的) to hear the news.
2.The bag of rice is _________ (在......中间) the road.
3. _________ (思考) it carefully, and you will have a good idea.
4. Start with a word _________ (与......有关的) to the scene.
5.It is always about a _________ (单一的) topic.
中位车速
