已知f(x)=x5+2x3+3x2+x+1,应用秦九韶算法计算x=3时的值时,v3的值为( )
A:27
B:11
C:109
D:36
Keep your child off drugs, ________ it will ________ many serious health and behavior problems.
2004年,有位中国水稻专家获得 “世界粮食奖”,他是( )