三、英文阅读理解 The U. S. Treasury Department has redesigned the $100 bill, and has begun releasing the new currency recently. Treasury spent nearly 10 years on the redesign and has added a number of state—of—the—art features: microprinting(微型印刷技术), color shifting ink, a polymer(聚合物)security thread. The most striking change, however, is the enlargement of Benjamin Franklin's portrait: he now dominates the bill like a movie star in a newspaper advertisement. The money we carry around is so familiar that whenever a new bill or coin is introduced, it creates a ripple in our ordinary lives. But not much more than a ripple, and once few people use $100 bills regularly, most Americans greet the arrival of the new note with no stronger emotion than curiosity. Some foreigners, by contrast, have become clearly worried by the news of its arrival. Around the world, U. S. currency and the $100 bill in particular is often treated as the ultimate repository(贮藏所) of value. The Federal Reserve estimates that two-thirds of all U. S. cash circulates outside the United States. In nations where inflation is high and where there are few credible banking institutions from Latin America to Africa people save and conduct business in $100 bills. And with the U. S. issuing new $100 bills, many abroad are worrying that the ones they already have are about to become worthless. The fear is most widespread in Russia. The Russian Central Bank estimates that somewhere between $15 billion and $20 billion of U. S. currency is in Russia, about 80% of it is the form of $100 bills. Everyone from small savers to businessmen and members of Mafia (黑手党) relies on hundreds, so the changes in the bill are causing high anxiety. Many Russians have already changed their meager(微不足道) supply of $100 bills into smaller U. S. notes. But over the next few years the Treasury plans to redesign every note except the $1 bill.
1. The redesign of the $100 bill has added all the following state—of—art features EXCEPT ______.