单选题 ______ all cherry trees are very attractive when in bloom, some species with inferior fruit are cultivated especially for their flowers.
【正确答案】 A
【答案解析】[解析] 句意：樱树在开花的时候都很美丽，有些不结果的品种是专门培育出来用于赏花的。although作连词引导让步状语从句，连接两个完整的句子。