口语无忧专项训练答案

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口语无忧专项训练答案

Ever'wonder how dogs can walk barefoot['br?fut]in the snow 7?Now a Japa'nese scientist mayhave the answer—aninsidc central heating system.The secret lies in how dogs‘cireulatec['s?:kjuleit]their blood/to prevent cold'surfaces from chilling the restof their bodies~.

The system uscs warm blood to heat the cold blood;beforc'returning it to the dog's heart and'central circu lation.Dogs exchange'heat at the'endof their legs.Arterial blood flows[fl'uz]tothe'end～of

their'legs/and then heats“up venous blood.In other words~,thcy have a'hcatexchange system in their'feet~.

B 三间

How olal is your son?

what major dioes your son want to take in the future? H ow do you get along with your son? 五答 24.

To find a good job. Playing the guitar. Bcing a music producer. Like friends. C






l was lonely when I went to a junior high school,but a gift a boy gave me occasionally changedmy character.It was his smile.One day the hoy,who was a stranger to me then,came into ourclassroom.When he passed me,he smiled at me.This smile brought me happiness and warmth.From then on I began to get close to others and made friends with them.The boy with the smilc isone of my best friends now.

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