Limitations.1. sometimes the problem occurs in the score2. it is not appropriate to use the learning complex.3. it is difficult to write a question to get just one answer.
Limitations 1. Some problems in the second. Not appropriate to take measures to learn the more complex 3. difficult to write questions to get a single answer.
Limitations.1. Sometimes there are problems in the score.2. Not suitable to measure the learning of very complex.3. Hard to write a question to get only one answer.