shanexwang

破折号起补充说明作用，可以略去。
A Although appearing less appetizing than most of their round and red supermarket cousins, heirloom tomatoes, grown from seeds saved during the previous year 没有谓语
C  heirloom tomatoes后仍然缺一个谓语
不知道解释的对不对 等待更多讨论