根据以下资料回答第39、40题。
 In the eyes of many foreigners, Chinese are the best hosts and the worst guests in the world.They're not really bad guests, but because the guest-host relationship in China is much differentthan in some western counties, it appears they are not nice guests. And western host sometimes lookrude in the eyes of Chinese guests. 
In China, guests are almost like gods. Whenever I enter a Chinese person's home, there isalways fruit on the table for me, and someone is quick to bring me a cup of tea or water. In thewest, generally the guest is not a god. Acting according to the host's way of doing things is usualbehavior for a guest. 
My wife's mother, a very kind elderly Chinese lady, doesn't smoke. When I see some ofher guests smoking in her house, as a non-smoker, I feel unhappy. Usually I want to stop themdirectly, but I must realize that in China, to be a good host, she must not do that. In most NorthAmerica homes, if you are a guest, and the hosts are not smokers, you should not smoke in theirhouse. At the very least, you could ask, "Is it OK if I smoke ? " But, don't be surprised if theysay, "No, you can't smoke." In our culture, if you smoke in their home, you are a bad guest, butif they don't allow you to smoke in their house, they are not a rude host. 
Guests in China also have special habits. Some western people may not adapt to these habitsvery soon. Thankfully my wife is Chinese, so whenever we visit a Chinese family she tells me tobuy them a gift. However, giving a gift to a host is not always necessary in my country. So, if youinvite international guests to your home, don't be too surprised if they don't bring you a gift. 
In China, you probably won't need to change the guest-host relationship very much becauseyou will probably only be the guest, and Chinese are naturally very good hosts. If western hostsinvite you to their house, try not to be too surprised if their style of treating you is not what youhave expected.
Many foreigners think that Chinese hosts are the______in the world.