经济增长速度的快慢通过经济增长率来衡量。（）
参考答案：对
—I’m leaving for Canada on a study trip next week.
—___________________.
A．Enjoy your time
B．That’s all right
C．You’re welcome
D．It’s a pleasure
Lily is _______ English girl. ________ is a student.[ ]
A. a, He
B. an, She
C. an, He
