There have been many comparisons (比较) made between London Underground and New York Subway. They are the best known public transport systems (公共交通运输系统) in the world and each is a key part of one of the greatest cities of the world. The two systems have many things in common(相同), including their ages and fame（名声）, but there are also important differences.
The following table shows some of the similarities (类似）and differences.
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（1）
From the table, we can see that London Underground _______.
A . has more lines than New York Subway
B . has a longer history than New York Subway
C . has better air conditioning than New York Subway
D . isn't as convenient (方便） as New York Subway
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（2）
It's____ to take an underground in London than to take a subway in New York.
A . much safer
B . more dangerous
C . as safe as
D . as dangerous
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（3）
London Underground and New York Subway have some similarities in_______.
A . air conditioning and hours of operations
B . longest station and frequency
C . crashes in the last 10 years and longest station
D . longest journey without changes and passengers (旅客）
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