Shopping cart handles are the most bacteria-infested(滋生细菌)items among some commonly used objects while doorknobs on public bathrooms are not as bad as might be expected, according to a survey 61_________ (conduct) in South Korea.
The South Korea Consumer Protection Board tested six items that are commonly handled 62 the public and ran tests for their bacteria content. Shopping cart handles led the way with 1, 100 colony forming units of bacteria per 10 sq cm (1. 55 sq inches)followed by a mouse used on 63 (computer)in Internet cafes, 64 had an average of 690 colony forming units. “The reason why shopping cart handles had so much bacteria is 65 the area is larger than the others and people have 66 (much) space to place their hands, ”Kwon Young-il, an official at the consumer body, said by telephone. Hand straps 67 buses were next with 380 units, followed by bathroom doorknobs at 340. Rounding out the list 68 (be)elevator buttons at 130 colony forming units and hand straps on subways at 86. The report released this week said 69 (wash) hands with soap 70 (remove)almost all of the bacteria.