题目内容

14.He was very attentive with his headburied(埋头) in a newspaper.

分析 他非常专心地在看报纸.

解答 buried考查非谓语.be buried in 是英语的固定搭配"埋头于,专心于",head 与bury之间是被动关系,此处用过去分词在句中做补语.

点评 非谓语动词是高中语法的重点也是同学们学习的难点,解决非谓语的题目首先要分析所考查的非谓语动词的语法成分和形式.分析一下题中缺少的是谓语动词还是非谓语动词.其次分析句子中缺少什么成分,分析应填或应选的非谓语动词所表示的动作所发生的时间.因为弄清由非谓语动词所表示的动作发生的时间与整个句子的谓语动词所表示的动作发生的时间的先后顺序是解题的关键.辨析非谓语动词与其逻辑主语是主谓关系还是动宾关系从,而确定非谓语动词应用的语态形式.现在分词作补足语,表示的是正在进行的或主动的动作.

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3.Styrofoam,or polystyrene,is a light-weight material,about 95 percent air,with very good  insulation(隔热) properties,according to Earthsource.org.It is used in products from cups that  keep your drinks hot or cold to packaging material that protects items during shipping.
    With the above good features,Styrofoam still enjoys a bad reputation.It cannot be recycled  without releasing dangerous pollution into the air.The U.S.Environmental Protection Agency says it is the fifth-largest creator of harmful waste.
    But now the common worms which are usually disgusting can come to the rescue,specifically,mealworms.Scientists from the U.S.and China have discovered that mealworms can digest plastic.One mealworm can digest a pill-sized amount of plastic a day.Study co-author Wei-Min Wu says that in 24 hours,the plastic is turned into carbon dioxide.
   Since Styrofoam has no nutrition at all,are the worms hurt by eating plastic?Much to the scientists'surprise,the study found that worms eating Styrofoam were as healthy as worms eating bran(谷糠).
    The researchers will study the worm's eating habits and digesting system,looking to copy the plastic breakdown but on a larger scale.Once the way can be put into practice,it will make a revolutionary difference to the disposal of plastic.
"Solving the issue of plastic pollution is important",says Wu,a Stanford University environmental engineering instructor.After all,our earth is small and landfill space is becoming limited with too much garbage waiting to be dealt with,he says.
    About 33-million tons of plastic are thrown away in the United States every year.Plastic plates,cups and containers take up 25 percent to 30 percent of space in America's landfills.One Styrofoam cup takes more than 1 million years to recycle in a landfill,according to Cleveland State University.

66.What do we know about Styrofoam?C
A.It can be used to cool drinks.
B.It is a weightless material.
C.It is harmful when recycled.
D.It is usually used on ships.
67.What can we infer from the third paragraph?A
A.Mealworms have amazing digesting power.
B.Mealworms are not bad in their nature.
C.Mealworms can rescue people's lives.
D.People misunderstood mealworms in the past.
68.Why will researchers study the worm's eating habits and digesting system?B
A.To find ways to help mealworms grow larger.
B.To imitate their ways of breaking down plastic.
C.To help develop their digesting ability.
D.To make sure of their safety after eating plastic.
69.In the future,plastic may be recycledD.
A.by raising amounts of mealworms    
B.by environmental engineering instructors
C.using a method inspired by eating mealworms 
D.without sending out dangerous pollution
70.What's the main idea of this passage?C
A.Styrofoam is widely used in daily life.
B.Mealworms are genius at eating plastic.
C.Plastic recycling may be no more a problem.
D.Plastic can be turned into carbon dioxide.

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