Click "Start Answering" to enter the first level. After the answer, the system will automatically form a score, showing whether the test has passed or not. You need to go through each level in turn, and you can't give up halfway in the process. If you stop answering questions, it's withdrawal. Every time a question is displayed, the countdown will be displayed on the right side of the interface. If the answer is finished and the time limit is not exceeded, you can click "Submit to the next question". If the time limit is exceeded, you will automatically jump to the next question. In the process of answering questions, you must not cut off the answering interface. If the interface is switched due to non-system reasons, it will be submitted by default, and the answer to the question cannot be modified after submission. (Please pay attention to the screenshot in time for the answer. )