题干

如图,在边长为1个单位长度的小正方形组成的网格中,△ABC的顶点A、B、C在小正方形的顶点上,将△ABC向下平移4个单位、再向右平移3个单位得到△A1B1C1,然后将△A1B1C1绕点A1顺时针旋转90°得到△A1B2C2


①在网格中画出△A1B1C1

②在网格中画出△A1B2C2

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    Summer Science Class registration begins on March 8 ! If you are interested in science,the environment,or conservation and you are in grades 7 -12 ,sign up soon for Black Rock Forest Consortium's Summer Science Class program. You can download the Summer Science Classes 2013 brochure here. It is easy to register;just call 845-534-4517 or click here.

    Twelve-week-long courses in the natural sciences and the arts are offered at Black Rock Forest in Cornwall from July 15 through August 9.Two more classes are offered with site partners,including “The Art of Scientific Observation,” hosted jointly by Black Rock Forest Consortium and Storm King Art Center ,one of the world's leading sculpture parks ,and “A Nautical   Expedition” hosted jointly by the Consortium and the Constitution Marsh Audubon Center.

    We are delighted to announce two special “away” classes that are part of the Summer Science Class program this year: an“Adirondack Eco-Adventure” beginning August 11,and “Conservation Biology in Florida,” beginning June 23 and featuring field work on the Gulf Coast in cooperation with the University of Florida's Seahorse Key Marine Biological Laboratory. For more information on the Summer Science Class program,please read our press release. Black Rock Forest Consortium is a nonprofit organization founded in 1989 to advance scientific understanding of the natural world through research,education and conservation programs.