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C.Understanding.D.Attention.29.What does Bach think of the mascot?A.Surprising.B.Entertaining.C.SatisfyingD.Interesting.30.What's paragraph 5 mainly about?A.The origin of the mascot image.B.The introduction to the mascot designer.C.The hard work behind the mascot design.D.The hidden meaning of the mascot image.31.What can be a suitable title for the textA.The Mascot of the 24th Winter Olympic GamesB.A Historical Moment of the Winter Olympic GamesC.Bing Dwen Dwen:a Lovely Panda Welcomes the WorldD.Comments on the Mascot of the 24th Winter OlympicsDThe high Andes mountains of Peru are a hummingbirds'paradise(蜂鸟的天堂)，rich inwildflower nectar()and low in natural enemies.But there's one problem:the cold.Night-time temperatures often dip below freezing in these rainy tropical highlands.How doesa six-gram bird that needs nectar from 500 flowers a day just to survive get enough extra energy tokeep itself warm all night?It doesn't.Instead,as temperatures drop,these hummingbirds enter astate known as torpor(冬眠).One species,.the black metaltail,.cools to3.26℃，the coldest bodytemperature ever recorded in a bird or non-hibernating mammal((非冬眠的哺乳动物)，researchersreport in Biology Letters."They're cold as a rock,"says Blair Wolf,a physiological ecologist at the University of NewMexico in Albuquerque."If you didn't know better,you'd think they were dead.Cooling tonear-death temperatures lets the hummingbirds save precious energy,allowing them to survive thecold night and get ready to feed the next day."Standing upright,the birds pointed their bills upwards,loosened their feathers and stoppedmoving.All of the species entered some kind of torpor,but the black metaltail cooled the most,dropping from a daytime temperature of about 40'C to just above freezing."During the day,these hummingbirds'hearts can beat 1,200 times a minute to power theircrazy lifestyle.But during torpor,their heart rates drop to as low as 40 beats a minute.It's anastonishing drop,"Wolf says,"and it could allow these high-altitude birds to cut their energy useby about 95 per cent.By not wasting energy trying to stay warm,these birds can live as high as5,000 metres above the sea level."When the sun begins to rise,the hummingbirds start warming about a degree a minute byshaking their muscles."You see the bird trembling there,and then all of a sudden its eyes popopen and it's ready to go,"Wolf says.32.What makes Andes mountains a perfect living place for hummingbirds?A.Its high altitude.B.Its climate conditions.C.Its animal species diversity.D.Its abundance of wildflowers.33.How does a hummingbird survive cold nights?A.By cooling itself to near freezing.B.By eating enough nectar before duskC.By stopping breathing and heartbeats.D.By hiding its bill in its loosened feathers.34.What do Wolf's words reflect about the hummingbirds?A.They tremble for warmth at night.B.They consume no energy at night.湖北省新高考联考体高一*英语试卷*（共8页）第5页