单选题 Mary evidently is the most diligent student among us.
【正确答案】 D
【答案解析】[解析] 该句划线词为形容词,意为“勤奋的,勤勉的”,D项意为“努力工作的,尽心尽力的”,和划线词意义相近,例:What do hardworking Londoners do on the weekend? 知道那些拼命工作的伦敦人怎么过周末吗? A项意为“聪明的;理解力强的”,例:I have not arrived at a very intelligent opinion on that matter.我对那件事还没有高见。B项意为“漂亮的,美丽的”,例:What beautiful bloom!多美的花!C项意为“健谈的,喜欢说话的”,例:She is too talkative to keep her own counsel.她说话太多,不能保密。