Tested today.
haven't seem any JJ apart from this one!
直角坐标系, 有个湖, 有人划船从P(-2,3)经 Q(-1, -1), R(3,2)返回P, 求近似距离.
AWA:
Since science and technology are becoming more and more essential to modern society, school devote more time to teaching science and technology and less to teaching the arts and humanities.
The following appeared as part of a promotional campaign to sell advertising space in the Daily Gazette to grocery stores in the Marston area.
“Advertising the reduced price of selected grocery items in the Daily Gazette will help you increase your sales. Consider the results of a study conduced last month, thirty sale item………………” | 
