GRE考试

根据网考网考试中心的统计分析，以下试题在2019/1/10日GRE考试习题练习中，答错率较高，为：45%
【单选题】Which of the following points lies in the interior of the circle whose radius is 10 and whose center is at the origin
A、(-9, 4)
B、(5,-9)
C、(0,-10)
D、(10,-1)
E、(-6, 8)
网考网参考答案：A，答错率：45%
网考网试题解析：
Find the distance from each point to (0,0), the center of the circle. We’re looking for a point that is less than 10 units from the center. The distance from (a,b) to (0,0) equals [*] Check each point. A: (-9,4) [*] [*]＜10 (KEY FACT N2). [*] **Clearly, (0,-10) is 10 units from the origin, and so is on the circle. Also, since (10,0) is on the circle, (10,-1) is outside. The others are too close to call without knowing the formula or using the Pythagorean theorem, so if you’re not sure, guess. document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>