单选题 A favorably moist rainy season through late July deteriorated during August and September across the eastern Sahel, leaving below-normal seasonal rainfall amounts in most areas.
【正确答案】 C
【答案解析】[解析] 句意：贯穿七月下旬的潮湿而又有利的雨季，于八月和九月在萨赫勒东部变得越来越糟，致使大多地区季节降水量低于正常水平。favorably有利地。advantageously有利地，有助地。courageously勇敢地。probably大概，或许。terribly可怕地。