标题: 求助：GWD31套 第1套Q3、Q8 [打印本页] 作者: mymwmw 时间: 2010-7-24 12:21 标题: 求助：GWD31套 第1套Q3、Q8 For protection from the summer sun, the Mojave lived in open-sided, flat-topped dwellings known as shades, each a roof of poles and arrowweed supported by posts set in a rectangle.
A. each a roof of poles and arrowweed B. each a roof of poles and arrowweed that are being C. with each being a roof of poles and arrowweed D. with roofs of poles and arrowweed to be E. with roofs of poles and arrowweed that are
Sulfur dioxide, a major contributor to acid rain, is an especially serious pollutant because it diminishes the respiratory system’s ability to deal with all other pollutants.
A. an especially serious pollutant because it diminishes the respiratory system’s ability to deal B. an especially serious pollutant because of diminishing the respiratory system’s capability of dealing C. an especially serious pollutant because it diminishes the capability of the respiratory system in dealing D. a specially serious pollutant because it diminishes the capability of the respiratory system to deal E. a specially serious pollutant because of diminishing the respiratory system’s ability to deal