题干
____ all behavior is learned behavior is a basic assumption of social scientists.
A：Nearly
B：That nearly
C：It is nearly
D：When nearly
答案(点此获取答案解析）
B
A：Nearly
B：That nearly
C：It is nearly
D：When nearly
，在地球表面附近绕地球沿圆轨道运行的相同质量的人造卫星的动能为
，则
的值最接近下列哪个数值： （ ）