2. 外语
  3. The advantage of overhead bridges is that ______. People are encouraged to use overhead bridges mainly because ______.

The advantage of overhead bridges is that ______. People are encouraged to use overhead bridges mainly because ______.

admin2009-05-28  29
问题 The advantage of overhead bridges is that ______.
People are encouraged to use overhead bridges mainly because ______.
选项 A、zebra crossing can be ignored
B、it is necessary to reduce traffic jam
C、they prevent accidents and loss of life
D、traffic is very heavy in large cities
答案C
解析
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