For example:
20 16 national junior high school mathematics league time
Registration time: 20 16 65438+ 10 23-2016 March 17.
Examination time
On the morning of March 20th, 20 16, the exam was held nationwide.
Try it: 8: 30-9: 30;
Test 2: 9: 50- 1 1: 20
Note: The first trial and the second trial are an event, which needs to be attended at the same time.
Scope and types of problems
The scope and types of the tournament are based on the Outline of Junior High School Mathematics Competition (revised in 2006), which is connected with the national senior high school mathematics league. The proposition adheres to the principle of "popularization, popularization, not exceeding the outline and not being ahead".
First, try to focus on basic knowledge and skills. The topic is 6 multiple-choice questions and 4 fill-in-the-blank questions, and the score is ***70 points.
Second, try to re-analyze the problem and solve the problem. The question type is three solutions, the content is algebra, geometry and synthesis, with 70 points, and the total score of the two exams is *** 140 points.
Because the angle of light hitting the ground is the same, the angle between light and the tree is 30 degrees, and the angle between light and the parallel line on the grou