单项选择题

What will be crucial to the economy of the cities in the twenty-first century
A) Services. C) Telecommunications.
B) Intellectual property. D) both A and B.

A．What will be crucial to the economy of the cities in the twenty-first century
B．Services.
C．Intellectual property.
D．Telecommunications.
E．both A and B.

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单项选择题

Which of the following is one of the reasons why telecities are preferred by some people A) Better environment. C) Efficient traffic. B) Low cost of housing. D) Low rate of terrorism.

A．Which of the following is one of the reasons why telecities are preferred by some people
B．Better environment.
C．Low cost of housing.
D．Efficient traffic.
E．Low rate of terrorism.

单项选择题

What is the author's attitude towards the reconstruction of The Pentagon and the World Trade Centre

A．Supporting.
B．Critical.
C．Neutral.
D．Indifferent.

What will be crucial to the economy of the cities in the twenty-first century A) Services. C) Telecommunications. B) Intellectual property. D) both A and B.

What will be crucial to the economy of the cities in the twenty-first century
A) Services. C) Telecommunications.
B) Intellectual property. D) both A and B.