题目

Scarlett Johnasson developed ______ interest in acting at three and has made herself perhaps ______ finest actress of her generation. A. an; a   B. /; the        C. an; the   D. /; a 答案：C(2007·内蒙古乌兰察布)小明在某次投篮中，球的运动路线是抛物线的一部分，如图所示，若命中篮圈中心，则他与篮底的距离L是 [　　] A．4.6mB．4.5mC．4mD．3.5m