Different countries have different {#blank#}1{#/blank#}（礼仪）. What is good in one country may not be welcome in {#blank#}2{#/blank#}（另一个）.

    Chinese people are {#blank#}3{#/blank#}（惊奇） to know that an Englishman doesn't stop to talk and {#blank#}4{#/blank#}（握） hands with his friends in the street. They just {#blank#}5{#/blank#}（打招呼） each other by saying hello and then pass on.

    English people think that we Chinese end our visits to friends all of a {#blank#}6{#/blank#}（突然）. They usually begin to show that they want to go 15 or 20 minutes before they leave their {#blank#}7{#/blank#}（朋友） house. And they do this two or three times within 20 minutes. Then they {#blank#}8{#/blank#}（吻） their friend and leave.

    Chinese people often put food on their guests' plates. But it's {#blank#}9{#/blank#}（不礼貌） for Canadian people to do so. In Canada, people give tips（小费） to waiters in restaurants, but Chinese people {#blank#}10{#/blank#}（很少） pay extra money.

    It is necessary for people to understand each other. Here is a saying, "When in Rome, do as Romans do."

    Flies(苍蝇) are one of the most dangerous enemies of human. They are dangerous because they carry diseases(疾病) , Flies do not care whether the food they eat is d{#blank#}1{#/blank#}or clean. The food they like best is o{#blank#}2{#/blank#}the dirtiest that can be found. Then they may f{#blank#}3{#/blank#}into a house where good clean food is kept and begin to walk all over it and eat it. Soon the good clean food becomes unfit(不合适) for people to eat. Often a person who is preparing f{#blank#}4{#/blank#}does not realize that it is unfit for people to eat, so the food is put on the t{#blank#}5{#/blank#}and eaten. Those who eat such food become dangerously ill. That's why we must get rid of(消灭) flies.

The government has spent a lot on  {#blank#}1{#/blank#}  this year.