第32题: [单项选择]Sylvia was' in low spirits because her throat infection left her very ______ and made her solo at the party impossible. A. dumb B. hoarse C. silent D. speechless 参考答案:B 答案解析:此题考查近义词的辨析。Dumb:哑的、无说话能力的;hoarse:嘶哑的;silent:沉默的;speechless:(由于激动、震惊等)一时不能说话,哑口无言,张口结舌。因此正确答案是B。