Bob is an English boy. His eyes are blue. Li Ming is a tall boy. His eyes are black. They are good friends. Bob's hair is yellow and Li Ming's hair is black. Li Ming's mom is a Chinese teacher. Bob's mom is an English teacher.她和李明的妈妈在同一个学校。Bob's dad is a doctor(医生). Bob and his dad look different. He looks like his mom. Bob's family are new in China. Li Ming's dad and mom help them(他们). They like their English friends.

若命题p:0是偶数，命题q；2是3的约数，则下列命题为真命题的是（    ）

若方程$\frac{3}{x+3}=\frac{2}{x+k}$ 的根为正数，则k的取值范围是（     ）

一带负电荷的质点，在电场力作用下沿曲线abc从a运动到c，已知质点的速率是递减的．关于b点电场强度E的方向，下列图示中可能正确的是（虚线是曲线在b点的切线）（   ）