At presant,GuandZhou is one of China’s fastest developing cities.But it also cause many problem.
　　　　First of all,language will be a problem for tourists who do not speak Cantonese. Most staff（依靠） at high-end hotels speak English while basic English conversation is possible at other local hotels．But, tourists who want to explore the city on their own will most probably have difficulty being understood.Second, phosphorus-containing washing powder is polluting our city. The new research recommends(推荐） Guangzhou to ban the production and sale of phosphorus-containing washing powder in order to eradicate（根除） the source of water pollution.
　　　 In conclusion,It is the key problem that we must slove while the city is developing.Every pollution should be paid attention at the early time.