The judge who was ________ to his favorite was criticized by many people.
A
A.偏袒的，不公平的;B公正的;C严格的，严厉的;D坦率的
Weallknowaboutthe_____thatsmokingcandotoourhealth.
Itisessentialthatyou__________anydocumentcarefullybeforesigningit.
一个物体在x轴上作直线运动，位置随时间变化的关系为x=2+4t2(SI)，则t=2s时物体加速度大小为____________m/s2
下列叙述中正确的是（）
一质点在xy平面内运动，运动方程为r=2ti+(3t²+2)j，则该质点的运动轨迹是（）
