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30.What can we learn about the system Lion Lights?A.It is the only solution that works.B.It is well received in many African countries.C.It needs to be more environmentally friendly.D.It lights up the way for lions to go back home.31.Which is the most suitable title for the text?A.Conflicts In The Nairobi National ParkB.Lights Are The Key To Protecting LionsC.Paula Kahumbu:A Pioneer In Saving LionsD.Kenyan Teen Invented Lights To Save LionsDSupermarket shoppers could soon be checking the environmental impact of food beforeputting it in their trolleys,thanks to new research.Many consumers want to know how their weekly food shop affects the planet.However.reliable information of this kind hasn't been available because food companies only have to listtheir main ingredients ()The food industry has also been crying out for a new tool andthis algorithm(运算法则)，which is already being used by some companies to make theirmeals more eco-friendly,helps fill the gap.Dr Mike Clark.who led the research at Oxford University,called the tool "a significantstep towards providing information that could enable informed decision-making".The teamestimated the composition of 57,000 foods and dnnks in supermarkets.It then assessed theimpact of growing methods,prooessing and transport,against key environmental measures in-duding greenhouse gas emissions and impacts on nature.nally,an eco-score was workedout.However,the analysis has limits.Under the algerithm,the higher the score,the higherthe environmental impact.As expected,foods containing more meat and dairy score muchhigher than those with more plant-based ingredients.But there was wide variation within spe-cifie types.For example.the highest-mpact pork sausage scored about a third higher than theleast one.And the impact of biscuits rose the more chocolate they contained.COOK,a frozen food producer looking to diversify away from meat,has worked with theresearchers.It wants to explore whether putting eco-labels on its products would help cus-tomers embrace a more sustainable diet.An official from the Department for Environment,Food and Rural Affairs welcomed theplan."We want to give everyone the information to make healthier,greener and more sustain-able choices with the food they buy."However,the researchers don't foresee eco-labelling be-coming compulsory (in the near future.They want firms to adopt it voluntarily.something they believe would make a difference to the food industry in cutting their environ-mental footprint.【高二英语第6页（共10页）】·23一FX03B·