在全球范围内，有30多个地方存在沙丘“鸣沙”现象。中国科学家研究表明，这种呜沙现象可能与沙丘内部结构有关，特定的结构可以起到声音放大器的作用。但研究人员也表示，这些发现是否也适用于其它国家的鸣沙丘还有待进一步考证。这说明
①理性认识来源于感性认识 ②现象与本质的关系具有复杂性
③人们的真理性认识具有相对性 ④自然现象只能靠理性思维来把握
| A．③④ | B．①③ | C．②③ | D．②④ |
相关试题
It_____ have been Tom that parked the car here, as he is the only one with a car.
| A． | may | B． | can | C． | must | D． | should |
－Wow! You’ve got so many clothes. 
－But _____ of them are in fashion now .
| A．all | B．both | C．neither | D．none |
Four Chinese models were ______ the 14 people awarded prizes on Friday at the World Supermodel Competition.
| A．among | B．between | C．along | D．beside |
Life is like a long race _____we compete with others to go beyond ourselves.
| A．why | B．what | C．that | D．where |
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