题目

阅读理解 This may be music to your ears. Researchers P. Jason Rentfrow and Samuel Gosling gave 3,500 people a personality quiz. “We found that the musical styles people like are closely linked to their personalities,” Gosling says. RAP/HIP-HOP Known for their quick speech, some rappers can say more than 700 syllables（音节）a minute! If you like rap/hip-hop, you are energetic（精力充沛的）and have a way with words. You put a fresh spin on things, whether it's new moves on the dance floor or your hip style. CLASSICAL In the 18th century, classical musicians were like rock sta 月球表面重力加速度只有地球表面重力加速度的1/6，一根绳子在地球表面能拉着3 kg的重物产生最大为10 m/s2的竖直向上的加速度，g曲＝10 m/s2，将重物和绳子均带到月球表面，用该绳子能使重物产生沿月球表面竖直向上的最大加速度为 A．60 m/s2 B．20 m/s2 C．18.3 m/s2 D．10 m/s2