This factory produces about one million pairs of shoes each year, 50% ____ are sold to the USA. A. of them B. of that C. of whom D. of which 答案:D公园里洒光喷泉的水池中有处于同一深度的若干彩灯,在晚上观察不同颜色彩灯的深度和水面上被照亮的面积,下列说法正确的是( )A.红灯看起来较浅且照亮的水面面积较小B.红灯看起来较深且照亮的水面面积较小C.红灯看起来较浅且照亮的水面面积较大D.红灯看起来较深且照亮的水面面积较大