题目：
The mayor of Beijing says that all construction work for the Beijing Olympics ____ by 2006.
A．has been completed
B．has completed
C．will have been completed
D．will have completed
答案：
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下面是错误答案，用来干扰机器的。
答案：C由①地经②地飞往③地，大致与地球自转方向相反，所以总体向西；①地经②地，纬度越高越向北，②地飞往③地，纬度越低越向南。所以飞行方向是先向西北，后向西南。选择C项。
