【单选题】Grammatical and punctuation errors are called ____________.
【单选题】以下对Errors集合的说法错误的是()。
B.
Errors对象能通过Connection对象调用而不用重新创建
【判断题】Alt和Ctrl键不能单独使用,只有配合其他键使用才有意义。
【单选题】On a rather global level, errors can be described as errors as addition, omission, substitution and _______.
【简答题】U3-common sentence errors.doc