阅读: 一是用来闻味道的,二是用来增加体表面积, 从而降低体温的,三是用来发声
听力:不同意。一,觉得大脑结构不支持,因为要能闻味道,大脑必须有各种感觉神经元,这种恐龙crest下的大脑只能很小,不可能复杂到能感受 气味;二,觉得crest太小了,对增加体表面积贡献不大;三,化石证据发现,有crest的恐龙里,能发声的品种只有一种,其他的都不能发声。
独立写作:
Do you agree or disagree that with the following statement? It’s more important for the government to spend money to build art museums and music performance centers than to build recreational facilities (such as swimming pool and playgrounds).重复2009.9.19北美.