公司制期货交易所设董事会，每届任期为（）年。
A.1
B.2
C.3
D.4
参考答案：C
The reason he was absent from class was his mother fell ill this morning.
A．for; that
B．why; that
C．for; because
D．why; because
GPRSWAPDT测试中图铃下载速率的集团优秀指标是（），WAPCQT测试中WAP平均首页显示时间集团优秀指标是（），PDP激活成功率集团优秀指标是（）.
