Very easy to understand. Reconstruction actually gives you a chance to get credit. Because you didn't pass this course last semester, you have to retake the exam. That is to say, you didn't get the credit for that course at that time, but after the course you retaken passed, you got this part of the credit. However, it should be noted that many schools have regulations that if you fail a lot of credits, you must repeat the grade, so even if you pass the second interview, these credits will still accumulate and will not disappear. It's actually very easy to pass only one college course. Of course, if you review carefully, there will be no big problem.