单项选择题

The rapid-transit rail lines should ______.

A．develop as quickly as possible
B．develop with local economic development
C．develop after local economic development
D．develop with the construction industry

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热门试题

单项选择题The management system of the rapid transit rail lines ______.

A．is already quite developed
B．does not exist at all
C．is not good enough
D．needs to include the strict guidelines

单项选择题LOGO is unique because ______.

A．it is an educational program
B．it is in total control of human beings
C．it allows children to teach the computer to think
D．children use it