The three 11 with the lowest numbers of bacteria were all printed on polymers. They included the Australian dollar, the New Zealand dollar and some Mexican pesos.
The other currencies were printed on fabric made 12 of cotton. Fewer germs lived on the polymer notes. This connection suggests that 13 have a harder time staying alive on polymer surfaces. Scientists need to do more studies to understand how germs live on money-----and whether or not we need to be concerned. Vnesekoop is now starting a study that will 14 the amounts of time bacteria can stay alive on different types of bills.
Whatever Vriesekoop finds, the fact remains: Paper money harbors germs We should wash our 15 after touching it; after all5, you never know where your money s been. Or whats living on it
词汇:
pesos/pi:s?vs/ n .比索 bacterium /k?kti?ri?m/ n .细菌(单数)
germ/d??:m/ n.病菌 bacteria /b?kti?ri?/细菌(复数)
banknote/b??kn?vt/ n.纸币 centimeter/senti,mi:t?。/ n.厘米
microbiologist /,maikr?v,bai?l?d?ist/n.微生 polymer/p?lim? / n. [高分子」聚合物
物学家 harbor/ha:b?/ v.怀有,藏有
vendor/vend?I/n.小贩
注释:
1.have one thing in common :有一个共同点
2. well over :大大超过
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