Which of the things 上述（或下列的）那些东西里哪些...
which things 那些,什么 （相等于 what ）
第一个词组前面后（或后面）通常列出所谓的那些东西.
两者的区别可从下面例句看到：
Of airplanes, buses, cars and bikes, which of the things cost the most?
飞机,巴士车,汽车和自行车,哪个最贵?
Which of the things that swim is not a fish?
那些会游水的动物里哪个不是“鱼”?
Which things do elephants like to eat?
大象喜欢吃什么东西?