Question18-A common series of questions. In general, the exercise questions will require finding the formula of the series, then summing up, or constructing a new series. But in the 2 1 college entrance examination, it became a proof question. Maybe many candidates will be stunned when they see the problem, and their brains will be blank.
Problem 19- solid geometry, it is common that the first problem proves parallel or vertical, and the second problem finds volume. This time, it's the other way around. In solidification training, candidates suddenly encounter a problem whose difficulty is inconsistent with their expectations, and it is inevitable that they will be flustered.
The principle of solving problems in college entrance examination;
1, encountered difficulties
Don't worry when you encounter difficult problems or problems with many steps. Everyone is equal in the examination room, so it is impossible to be alone. This question is very difficult for many candidates. Therefore, the difficulty of the test questions has little effect on the ranking.
If you really can't answer, you can put it down and do the next question first, and then come back to study it carefully after other questions are finished, which may have unexpected effects.
2. Encounter the problem of "I can't remember at the moment"
First of all, let the brain relax, don't be nervous, and don't sit there thinking hard. You can first think about what knowledge points are forgotten in textbooks or notebooks, and then link these knowledge points to recall. You can also find other questions on the test paper to see if it can inspire you to recall the forgotten parts.