【单选题】The oxygen produced during photosynthesis comes from:
C.
the breakdown of CO2 and H2O
D.
the breakdown of oxaloacetate
【单选题】将函数 y=cos2x- 3 sin2x+1 的图象按向量 a =(m,n) 平移后,得到函数y=2cos2x的图象,则m,n的值分别为( )
【判断题】曹植《杂诗·南国有佳人》中”时俗薄朱颜 谁为发皓齿“表达了世俗污浊、难容高洁的怨愤之情。
【判断题】曹植《杂诗·南国有佳人》中“时俗薄朱颜,谁为发皓齿”表达了世俗污浊、难容高洁的怨愤之情。
【判断题】世界上有七百五十多种硬珊瑚,大约三分之二,都能在四王岛找到。
【单选题】The government have realized the use the returnees make ______ the experience and skills ________while living abroad.
【单选题】大学生要做德智体美全面发展的社会主义新人,其中( )是人才素质的灵魂。
【单选题】The black hero fought all his life to make black and white people _____.