There is a 20 minute parking _____ here, so we must get back to the car very quickly. A. freedom B. limit C. allowance D. prohibition 答案: B 解析: parking limit 意为在停车场“停车的时间限制”。a 20 minutes parking limit (停车时间限制为20分钟)。14.最有利于生物进化的生殖方式是( )A.无性生殖B.有性生殖C.营养生殖D.出芽生殖