【单选题】()是指作为事物(实体)唯一标识的、一组有序字符组合。它必须便于计算机和人的识别和处理。
【简答题】Many people like to travel by plane, but I don’t like it because an airport is usually far from the city. You have to get there early and wait for hours for the plane to take off and it is often late....
【判断题】在进行前后鼻音韵母的教学时,最重要的是明确韵尾的差异,不需要对前边的元音进行区别。
【简答题】通信系统的组成:是由信息源、发送设备、()、接收设备、受信者、噪声组成。
【简答题】Many people like to travel by plane , but I don't like it because an airport is usually far from the city. You have to get there early and wait for hours for the plane to take off and it is often lat...
【单选题】Listen to two long conversations and choose the best answer to each question you have just heard. Word Bank (conversation one) awfully adv. 十分,非常 file v. 把.....
A.
More than half an hour ago.
C.
Less than an hour ago.
【简答题】Many people like to travel by plane, but I don’t like it because an airport is usually far from the city. You have to get there early and wait for hours for the plane to take off (起飞) and it is often ...