如图表示血液、血浆、血细胞三个概念之间的关系，正确的是（   ）

集合A={（x，y）|y=x²+mx+2}，B={（x，y）|x﹣y+1=0，0≤x≤2}．若A∩B≠∅，求实数m的取值范围．

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      Peru(秘鲁)is the fifth largest Latin American country with a people of 14, 430, 000. Almost half of these people live in the city areas(地区). Around Lima, there were 20% of the total (总数) population in 1961. The population here grew faster than anywhere else and in another 35 years reached 1/3 of the total population.

      About 45% of the people are Indians and 50% are white or mixed（混合人种）and the others are Asians, Negroes(黑人)or people from other countries.

      In island areas, only about half of the people can read and write, but at the places near the sea, 2/3 of the people can read and write.

下列基因组成中，是纯合子的是（  ）