To make their miles count members must______.A．pay their membership fees regularlyB．fly o
To make their miles count, members must______.
A．pay their membership fees regularly
B．fly overseas at least once every year
C．take a domestic flight with Air France once a month
D．pay for their flight at least once within twenty months
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正确答案：D
解析：同义转换题。本题询问为了使里程数有效，会员必须做什么。此题答案定位在文章第四段第一句话。Members must fly on a paid flight at least once every twenty months or their miles will no longer count．(蓝天飞翔会员必须至少每20个月内付费乘坐航班一次，否则他们已拥有的里程数将不再生效。)D选项pay for their flight at least once within twenty month是原文中fly on a paid flight at least once every twenty months的同义转换。选项A(经常为他们的会员资格付费)；选项B(每年至少坐飞机出国一次)；选项C(每月乘坐法国航空公司的飞机国内飞行一次)在原文中都未提及，故选D。另外，选项C中的domestic意为“国内的；家庭的”，该词是foreign的反义词。例如：This is domestic news．(这是国内新闻)；She does the domestic affairs every day．(她每天都忙家务活。)