单词识记：cause dangerous death stormterrible blow climate terrifyflood freeze disaster forecastshake shelter strike cloudypanic pour warmth shower短语扫描：be/get caught in陷入；被困住be/get stuck in 卡住；陷入burn.to the ground全部焚毁；烧为平地clear up(天气)转晴；清理；解决weather forecast 天气预报set.on fire/set fire to使燃烧；放火烧blow down吹倒dry up (河流、湖泊等)干涸in ruins成为废墟；严重受损become a victim to成为的牺牲品跟踪训练在空格处填入适当的词(1个单词)或所给词的正确形式1I kept my friend back from the (danger) animal.2He suffered (terrible) all through his illness.3The tidal wave formed a (terrify) wall of water.4Four of them walked under a (cloud) sky and all ended up walking in circles.5The old lady received him with unusual (warm)6Im afraid we shall be caught the rain on the way.7Many trees were blown by the strong wind.8The clothes will soon dry in the wind.9They saw by the light of the moon that part of the city lay ruins.10She is clearing the kitchen now.阅读理解AOhioLake Erie，the fourth largest lake of North Americas five Great supplies fresh drinking water to an estimated 11 million people in Ohio，Michigan and South Ontario，Canada.Yet sometimes pollution，both from industrial waste and farmchemical runoff，leaves large areas of the lake covered in halfmeterthick layers of green slime(黏液)Scientists blame a lot of chemicals entering the water，which has caused pollution.To find out where these chemicals come from，the Ohio Department of Natural Resources has been studying data from its network of 14 waterquality monitoring stations installed along the rivers that flow into the Lake Erie basin.At one point，water from the small stream is diverted into pipe where it is pumped into the testing station.“Well have a sample a day，year round so that really pins down what the chemistry is like，” says Dave Baker of Ohios Heidelberg University，who took charge of the monitoring stations for the Department of Natural Resources.The US.Environmental Protection Agency，the federal governments pollution watchdog，requires point sources，such as factories，to monitor and report their discharges(排出物)So Baker is looking for where the other sources of pollution come from.“If there are problems in Lake Erie，we want to know where its coming from and make sure were putting resources to solve the problem properly，” Baker says.“Its stations like this that help do that.”In this case，a primary source of the pollution turns out to be chemical fertilizers that wash off farmland during rainstorms.Because farmers and ranchers believe fertilizers are essential to high crop yields，they would like to use them.However，the USDAs Natural Resource Conservation Service isnt asking them to abandon farm chemicals，but rather to use them more sparingly(慎用地) so that they dont run off the land when it rains.Another technique for reducing farm chemical pollution of Lake Erie is covercrop farming.After the harvest，farmers plant a second quickgrowing crop to reduce erosion.The deeprooted plants，such as rye or turnips，help to cover the soil，allowing worms and fungi to work their magic and helping the soil to absorb more water and nutrients.1Who provides data from Lake Erie?AThe waterquality monitoring stations.BNatural Resource Conservation Service.CThe Ohio Department of Natural Resources.DThe US.Environmental Protection Agency.2The underlined phrase “pin down” in Paragraph 5 means “ ”Alooks through Bexplains exactlyCkeep a record of Dshow clearly3What causes the pollution in Lake Erie?AAnimal waste from nearby farms.BWaste water from a nearby factory.CChemical fertilizers from the fields.DPesticide farmers used to kill locusts.4What is the purpose of planting quickgrowing crops?ATo prevent worms from eating crops.BTo increase the harvest of the farmers.CTo make full use of chemical fertilizers in the soil.DTo keep the soil from being washed away.BConsumers everywhere are faced with the same dilemma：given limited resources，what sorts of purchases are most likely to produce lasting happiness and satisfaction？Recent research has confirmed that experiential purchases tend to produce greater hedonic(享乐的) gains than material purchases.The reason why experiences improve with time may be that it is possible to think about experiences in a more abstract manner than possessions.For example，if you think back to a fantastic summer from your youth，you might easily remember an abstract sense of warm sunshine and youthful exuberant(生气勃勃)，but youre less likely to remember exactly what you did daybyday.Material possessions are harder to think about in an abstract sense.The car you bought is still a car and that great new jacket you picked up cheap is still just a jacket.Its more likely that the experience of that summer has taken on a symbolic meaning that can live longer in your memory than