英语周报八年级新目标2018-241期答案

1.A【解析】若n代表研究的非同源染色体上等位基因对数,则F1减数分裂形成配子的种类为2”,F1形成F2时,雌雄配子的组合数为4",F2的基因型的种类数为3,F2的表现型种类数为2”故选A

21.A。根据“ This creative art summer camp program is a perfect chance to develop self-confidence and leadership."可知A为正确答案。22.B,根据第三个Camp里面的关键词“ theater-loving kids”、“ teach children and teens(aged10-17)tobe… performers”可推出B为正确答案。23.C,根据最后一个Camp的内容“ The camp offers a fully elective program with strong offerings in Circus, Rock music,Dance, Sports, Water Sports, Technology., Visual Arts and so much more."可知C正确。

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