2019年mpa考试英语真题——介词和介词短语2277

{01}Scientists are convinced ________the positive effect of laughter________ physical and mental          health. A.of; at B.of; on C.by; in D.on; at 解析：考查介词辨析。be convinced of 相信… ; “对…有影响” 应用介词on。句意：科学家们相信笑声对身体和精神健康有积极地影响。故B正确。
本题选B。
{02}The form cannot be signed by anyone ______ yourself.  A.rather than B.better than C.more than D.other than 解析：考察than用法。A而不是；B比…好；C超过，不仅仅，非常；D除…之外；结合句意可知D正确。句意：除了你自己别人不能签这个表格。
本题选D。