如果图形中每个后面的峰和谷都高于前面的峰和谷，则趋势就是( )。
A．上升方向 B．下降方向 C．水平方向 D．无趋势方向
参考答案：A
All the people _____ at the party were his supporters. [ ]
A. present
B. thankful
C. interested
D. important
—Is Annie ______ classmate?
—Yes. She is a good friend of ______. [ ]
A. you / me
B. you / I
C. your / mine
D. your / my
