●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

　　Ⅲ.完形填空

　　A Brick in Life

　　A young and successful manager was traveling down a neighborhood street, going a bit too fast in his new Jaguar. He was __1__ kids rushing out from __2__ parked cars and slowed down when he thought he saw something.

　　__3__ his car passed, one child appeared, and a brick smashed into the Jaguar's side door. He slammed on the __4__ and turned the Jaguar back to the spot from where the brick had been thrown.

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