Part V Cloze (15 minutes)
　　Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D). You should choose the ONE that best fits into the passage.
　　Everyone knows hand washing is important. But a new study shows how washing your hands 67 , and at the right time, can have a big impact on your family’s risk of getting sick.
　　Most studies on hand washing focus on 68 and food service workers. But this month’s American Journal of Infection Control focuses on washing hands at 69 as a way to stop infections from 70 . Several studies show hands are the single most important 71 route for all types of infections.
　　Even though most people know to wash their hands after using the toilet or handling a diaper (尿布), studies 72 many people are still ending up with germs on their hands.
　　One study looked in homes of 73 recently vaccinated against polio (脊髓灰質(zhì)炎). After vaccination, the virus is
　　74 to be shed in the baby’s feces (糞便). Researchers found the virus on 13 percent of bathroom, living room and kitchen surfaces. 75 the virus from the vaccine didn’t pose a health risk, feces-borne viruses can 76 through the home.
　　Doorknobs and toilet flush handles are key 77 of germ transmission in the home. That’s why people should focus on cleaning such surfaces 78 and always wash their hands after touching them. In one study, a 79 touched a door handle contaminated with a virus. He then shook hands 80 other volunteers, and spread the virus to six people.
　The study authors note that the timing of hand washing is key. It’s 81 to wash hands after using the toilet, before eating or handling food. Other crucial times for hand washing are after 82 a diaper or cleaning up after a pet, or after touching garbage cans, dish rags and utensils that may have come 83 contact with raw food.
　　While it may be hard to 84 that something as simple as regular hand washing can make a difference in your family’s health, consider what happened during the 2003 outbreak of SARS. The outbreak 85 extensive public and community health measures, including regular hand washing. Not only was the SARS outbreak contained, 86 other cases of illnesses dropped sharply.
　　67. A) occasionally B) often C) sometimes D) repeatedly
　　68. A) chemical B) physical C) medical D) mental
　　69. A) home B) clinics C) hospitals D) school
　　70. A) living B) spreading C) surviving D) going
　　71. A) transmit B) transfer C) transferring D) transmission
　　72. A) claim B) agree C) suggest D) object
　　73. A) parents B) teachers C) adults D) infants
　　74. A) known B) said C) moved D) added
　　75. A) When B) While C) Why D) Which
　　76. A) travel B) go C) fly D) float
　　77. A) questions B) opportunities C) ideas D) sources
　　78. A) always B) frequently C) regularly D) actually
　　79. A) volunteer B) baby C) worker D) person
　　80. A) in B) on C) with D) through
　　81. A) useless B) obvious C) interesting D) thankful
　　82. A) taking B) using C) changing D) bringing
　　83. A) of B) for C) from D) into
　　84. A) dream B) know C) figure D) believe
　　85. A) triggered B) started C) helped D) saved
　　86. A) yet B) while C) but D) since

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