A:to which
B:for which
C:with which
D:by which
椭圆x=4osθy=5sinθ(θ为参数)的长轴长为( )
Hello. I am Amy. I am eight years old. Today is my birthday. Look, I have a birthday cake. I have juice and rice for dinner. And I have many gifts, too. A red toy monkey, two new bags and five storybooks. I am so happy today.