题目内容:
根据以上短文,回答题
According to the passage, people in Karachi today suffer from a short supply of water because__________.
A the water supply network built in 1947 has stopped to function
B the city has become much largest than before
C old networks can not meet the need of the city's greatly-increased population
D other city is longer a part of British India
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答案解析: