tpo2 閱讀 - 英檢

tpo 2閱讀第一大題12小題


■ The raising of livestock is a major economic activity in semiarid lands,
where grasses are generally the dominant type of natural vegetation.
■The consequences of an excessive number of livestock grazing in an area are
the reduction of the vegetation cover and the trampling and pulverization of
the soil. ■This is usually followed by the drying of the soil and accelerated
erosion.■



However, some modern architectural designs, such as those using folded plates
of concrete and air-inflated structures,are again unifying skeleton and skin


The answer is B

why?


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