Examples are examples of learning, consolidating basic knowledge and training basic skills. We must review and ponder them in a down-to-earth and serious way. Thoroughly understand what each example asks you to do! So you must live up to the expectations of the role model! If you don't understand this, obstacles and stumbling blocks in after-school exercises will make you lose interest and confidence!

Let alone the answer sheet!

The most important thing in all examples is "use your head"! Of course, it is essential to start work!

After-class exercises are mainly to consolidate and expand the content learned in each chapter. If you understand these examples, the exercise will become simple and easy.

In addition to the relevant basic knowledge, the examination paper mainly examines the degree of knowledge learned and the comprehensive application ability of the skills mastered.

It must be clear that:

Lay a good foundation, step by step, and draw inferences from one another!