完形填空

Milan, the second largest city of Italy, has won an undesirable(不受欢迎的)world record．　　1　　 the 54 big cities studied by the World Health Organization and the United Nations, Milan was considered to have the worst air pollution．According 　　2　　 these two 10 year studies, the level of air pollution in Milan is twice as high 　　3　　 the levels in Paris and Beijing and three times 　　4　　 in Tokyo and London, and four times that in New York．The reason 　　5　　 Milan’s bad pollution, to some experts, is that the city lies in a valley 　　6　　 holds back the poisonous gases．　　7　　 Milan has taken some measures to lower the level of 　　8　　, the situation is still worrying．People joke to each other, “If you traveling to Milan, be sure to 　　9　　 your gas mask(面具)．”In order to reduce the use of private cars, in 1979, the authorities in Milan began an interesting experiment：passengers in the city buses did not have to pay 　　10　　 their tickets．

在下面短文的每个空格内填入一个形式和意义都准确的词。

　　Dear Sir,

　　I’ve to travel every day from Souk Road to the airport．Two buses travel along their route：the number 49 and number 16．But by the time the number 16 bus reaches Souk Road it is always 　　1　　．So I can’t get on it．I’ve to 　　2　　 for the number 49, because sometimes there are empty seats on it．

　　The timetable says that there are buses from Souk Road to the airport 　　3　　 ten minutes．If so, 　　4　　 do I have to wait half an hour for a bus nearly every day?

　　The regulations say that if there are 　　5　　 seats on a bus, the bus must stop at every bus stop 　　6　　 people are waiting．Why do the half empty buses go 　　7　　 past me when I’m standing at the bus stop?

　　It is 　　8　　 that our bus company has 　　9　　 the regulations and think 　　10　　 of their passengers．Can you do something to make your service better?

在下面短文的每个空格内填入一个形式和意义都准确的词。

　　There is probably no place anywhere in the modern world today that is not 　　1　　 by tourists．The travel business offers a vast network of services for that comfort and convenience of 　　2　　．“Package tours” that include 　　3　　 from transportation to hotel, meals, and sightseeing trips are 　　4　　 by airline, 　　5　　 and bus lines．There are also private companies that organize tour for 　　6　　 people fourteen and over．

　　A visitor to strange land today needs never be at a 　　7　　 for information about the places he is visiting．There are 　　8　　 of travel books and guidebooks for practically every place on the earth．The books advise 　　9　　 to see, wear, and buy, and describe 　　10　　 and hotels．Governments, states, and cities publish small books listing important sights for visitors．

下面的一段文章为课文原文的浓缩，仔细阅读，根据原文章内容将其补充完整。

　　The Internet is the biggest 　　1　　 of information in the world．It 　　2　　 millions of pages of data．

　　In 1969, a US defence organization 　　3　　 a network of computers 　　4　　 DARPANET for the US army．In 1984, the US NSF started the NSFNET network, which made it become possible for 　　5　　 to use the system 　　6　　．NSFNET is 　　7　　 the Internet．

　　In 1989, an English scientist 　　8　　 the idea of the World Wide Web, and in 1991, he 　　9　　 it．Then he made 　　10　　 possible 　　11　　 everyone to use the Internet．　　12　　, the web and the Internet grew．　　13　　, about 80 percent of web traffic is in 　　14　　, but this percentage is 　　15　　．By 2002, much web traffic could be in Chinese．

下面的一段文章为课文原文的浓缩，仔细阅读，根据原文章内容将其补充完整。

Different metals have different 　　1　　．When we use metals, it is 　　2　　 to know how they 　　3　　 with different 　　4　　．The reaction of metals with these substances can be put in 　　5　　．From the 　　6　　, we can find that potassium reacts 　　7　　 with oxygen and water while 　　8　　 doesn’t react with water．When we 　　9　　 calcium in oxygen, it burns to 　　10　　 an oxide．

下面的一段文章为课文原文的浓缩，仔细阅读，根据原文章内容将其补充完整，并尽量背诵。

　　Xiamen is one of the most interesting cities on the 　　1　　．It is a lively and 　　2　　 place．People feel 　　3　　 living there．It is 　　4　　 hot and wet in the summer, but it can be quite cold in the winter．Every year, many 　　5　　 come to Xiamen, and they can be a 　　6　　 to the local people．

　　You can buy all kinds of things from the 　　7　　 in the business 　　8　　．

　　The 　　9　　 district is the most interesting part of the city．Gulangyu is a 　　10　　 island with some really interesting 　　11　　．