Question 40: How do you calculate the distance to the horizon? As a _____, it's 7 miles + 1 mile per 100 feet above sea level.
A. trick of the trade B. golden rule C. free hand D. rule of thumb
1000 câu khó mục tiều 9+ Tiếng anh ôn Tốt nghiệp THPT Quốc Gia (Lesson 18)