单选题 The training course was rather demanding but his strong will finally pulled him through.
【正确答案】 B
【答案解析】demanding意为“要求严格的”。A意为“推荐,劝告”;C意为“指挥的”;D意为“令人喜欢的”。只有B(strict,意为“严格的”)意思最为接近。