●Trees are carbon sinks

　　To produce its food, a tree absorbs and locks away carbon dioxide in the wood, roots and leaves. Carbon dioxide is a global warming suspect. __4__. This locking­up process “stores” carbon as wood and not as a “greenhouse” gas.

　　●__5__

　　Trees block urban noise almost as effectively as stone walls. Trees, planted at strategic points in a neighborhood or around your house, can reduce major noises from freeways and airports.

　　A．We could not exist as we do if there were no trees

　　B．Trees help clean the sky

　　C．A forest is a carbon storage area that can lock up as much carbon as it produces

　　D．Trees control noise pollution

　　E．Man has been planting trees to make the planet a more beautiful world

　　F．The modern human community has other more practical reasons to admire and honor trees

　　G．Trees can either store harmful pollutants or change the pollutants into less harmful forms

　　答案：1～5　FAGCD

　　课时练(三)　第Ⅱ卷强化增分练(练规范)

　　(限时：45分钟)

　　Ⅰ.语法填空

　　(2016·石家庄市复习教学质量检测)Once upon a time there was a great man. He had a bright and __1__ (cheer) little girl and the man loved her very much. When __2__ little girl was growing up, the man would hug her and tell her, “I love you, little girl.” The little girl would shout and say, “I'm not a little girl anymore.” Then the man would laugh and say, “__3__ to me, you'll always be my little girl.” The little girl, __4__ was not little anymore, left home and went into the world. __5__ she went, the man would call her and say, “I love you, little girl.”

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