To learn the latest scientific and technical developments ______________ one of the aims that _______________ to be reached in learning foreign languages.A.are; isB.is; areC.is; isD.are; are
网友回答
B解析不定式短语To learn the latest…developments作主语，谓语动词用单数；one of the aims后面接定语从句，由于先行词是alms，而不是one，故定语从句的谓语动词用复数。