单项选择题

The main purpose of the passage is to ______.

A．compare skyscrapers with other modem structures
B．describe skyscrapers and their effect on the environment
C．support the use of stone in the construction of skyscrapers
D．illustrate some architectural designs of skyscrapers

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热门试题

单项选择题

What does the good health education refer to

A．Reminding people the benefits of exposure to sunlight.
B．Warning people against the danger of too much sun.
C．Advising people to spend more time in the sun.
D．Improving skin conditions.

单项选择题

Where in the passage does the author compare the energy consumption of skyscrapers with that of a city

A．Line 4-7.
B．Line 13-16.
C．Line 18-21.
D．Line 22-24.