= + ≤ ≤ , Max = 100
1. .In mathematics,an ellipse is a curve in a plane surrounding two focal points such that the sum of the distances to the two focal points is constant for every point on the curve.請由上述的定義寫出 ellipse 的中文名稱____________
3. According to the reading, what does the word “symptoms” mean?
(A)sickness (B) brain (C) sleep (D) cellphone (二)
It can’t be any more important for students to get good grades. They need to study hard and also develop good habits, which can help them do better on tests. Here are several tips about how to get better grades.