美元疲软是为何?(1)
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科学60秒:智能手机的妙用
Smart phones can provide music, movie times, bus schedules. They can even make phone calls! And now, they might help ____1____ fuel use while driving. That is, if enough are used in a system call...
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tips: Chad Reissig Johns Hopkins University Baltimore Maryland taurine guarana inositolYou could fill a store with all the energy drinks now available. They promise to make people feel more ene...
禁烟令带来心脏病的低发率 (1)
Pueblo Colorado Janet Collins More than 20 of the 50 American states ban smoking in public places. Many other states have partial bans. And many local governments have their own restrictions. ...
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布什从八国峰会回来,面对一团乱麻的国会,怎么办?President Bush says Monday's debate over a vote of no confidence in Attorney General Alberto Gonzales will have no bearing on whether the long-time...