The park is so beautiful. It _______ last May.
A:built
B:was built
C:is built
D:will build
欣欣同学期中考试成绩不佳,心里一直闷闷不乐。下列调节情绪的方法中你认为可取的是( )
椭圆x=3+3cosθy=-1+5sinθ(θ为参数)的两个焦点坐标是( )
“陕甘军民传喜讯,征师胜利到吴起”,诗句所描绘的情境发生在( )