This paper made the first records of taxa composition of protozoa in Lough Neagh,the largest freshwater lake in British Isles. One hundred and eight species(genus)were identified from the examinations of approximately...This paper made the first records of taxa composition of protozoa in Lough Neagh,the largest freshwater lake in British Isles. One hundred and eight species(genus)were identified from the examinations of approximately 150 PFU artificial substrates and various types of natural substrate from May to December, 19g2. Of 108 species or genus,30 core species were found on PFU substrate and 17 on natural ones.The ecological characteristics of protozoa were studied by showing the variations of species richness and individual abundance as a function of season or water temperature.Protozoa on PFU were compared at two sampling stations as well.展开更多
为切实提高同学们的英语水平和应试能力,现选部分历届高考虚拟语气试题,进行评析。 1.If there were no subjunctive mood,English__much easier.(MET84) A.will be B.would have been C.could have been D.would be 分析:答案选D。在...为切实提高同学们的英语水平和应试能力,现选部分历届高考虚拟语气试题,进行评析。 1.If there were no subjunctive mood,English__much easier.(MET84) A.will be B.would have been C.could have been D.would be 分析:答案选D。在虚拟语气中,从句用过去式,说明是与现在事实相反的假设,因而主句只可用would be。展开更多
文摘This paper made the first records of taxa composition of protozoa in Lough Neagh,the largest freshwater lake in British Isles. One hundred and eight species(genus)were identified from the examinations of approximately 150 PFU artificial substrates and various types of natural substrate from May to December, 19g2. Of 108 species or genus,30 core species were found on PFU substrate and 17 on natural ones.The ecological characteristics of protozoa were studied by showing the variations of species richness and individual abundance as a function of season or water temperature.Protozoa on PFU were compared at two sampling stations as well.
文摘为切实提高同学们的英语水平和应试能力,现选部分历届高考虚拟语气试题,进行评析。 1.If there were no subjunctive mood,English__much easier.(MET84) A.will be B.would have been C.could have been D.would be 分析:答案选D。在虚拟语气中,从句用过去式,说明是与现在事实相反的假设,因而主句只可用would be。
