屋架的起棋值是仅指下弦跨中抬高值。( )
参考答案：错
—Mary 1ooks down today．What is up？
—Well，_________happened between Mary and me is none of your business．
A．wherever
B．whoever
C．whatever
D．no matter what
下图为什么眼应如何进行矫正（）
A．近视眼，凸透镜
B．远视眼，凹透镜
C．远视眼，凸透镜
D．近视眼，凹透镜
y．What is up？